Caterpillarengine - industrialindustrial engine
Caterpillar C1.1
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar C1.1 is a compact industrial diesel engine, not a machine in its own right: a 1.13 L (69 in³), three-cylinder, liquid-cooled diesel offered in naturally aspirated and turbocharged configurations, rated roughly 13.7-21 kW (18-28 hp) across its various emissions ratings and rpm points. Bore and stroke run 77 mm x 81 mm with an indirect-injection mechanical fuel system, and dry weight runs about 87-108 kg (192-238 lb) depending on cooling package and accessory-drive build (varies by configuration). It descends from Caterpillar's mechanical 3011C block and carries the C1.1 designation from the Stage IIIA/Tier 4 Interim era through current Tier 4 Final and EU Stage V production, remaining Cat's current engine in this displacement class with no announced successor. It powers Cat's smallest mini excavators (301 series), compact generator sets, light towers, compactors, drill rigs, and other sub-19 kW off-road equipment.
Across its production run the C1.1 kept the same core architecture - 77 mm x 81 mm bore/stroke, indirect injection, mechanical pump with electronic shut-off - while emissions calibration and induction/cooling details changed generation to generation to meet Stage IIIA, Tier 4 Interim, and then Tier 4 Final/Stage V limits. Because its rated output sits below the aftertreatment threshold, Caterpillar never had to add a DPF or SCR system to this engine, so the mechanical layout stayed simple across every emissions step. That simplicity, plus parts commonality with siblings across the C0.5-C2.2 industrial family, is exactly why the C1.1 holds value in the used and parts market today: low-hour take-outs from mini excavators and gensets are common, rebuild kits are straightforward, and there's no aftertreatment system to complicate a teardown or inflate rebuild cost.
Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.
Caterpillar C1.1 specifications
Engine
| Model / configuration | Cat C1.1 industrial diesel, in-line 3-cylinder (I-3), 4-stroke-cycle, cast iron block and head |
| Displacement | 1.13 L (69.0 in3) |
| Bore x Stroke | 77 mm x 81 mm (3.03 in x 3.19 in) |
| Compression ratio | 23:1 |
| Aspiration | Naturally aspirated |
| Combustion / fuel system | Indirect injection; fuel injection pump with spin-on fuel filter |
| Rotation (from flywheel end) | Counterclockwise |
| Gross power, Stage IIIA / Tier 4 Interim rating (earlier generation) | 13.7-21 bkW (18.4-28.2 bhp) at 2200-3400 rpm |
| Gross power, U.S. EPA Tier 4 Final rating (later generation) | 14.4-18.4 bkW (19.3-24.7 bhp) at 1800-2800 rpm |
| Gross power, Europe ratings on Tier 4 Final-era sheet | 13.7-21.0 bkW (18.4-28.2 bhp) at 2200-3000 rpm |
| Peak rated power point | 21 bkW (28.2 bhp) at 3400 rpm, naturally aspirated non-Tier 4 Final rating |
| Emissions tier | Stage IIIA (EU) / Tier 4 Interim on earlier ratings; U.S. EPA Tier 4 Final on later ratings. Nonroad engines under 19 kW (25 hp) are not currently subject to EU emission standards. Tier applicable varies by rating and region |
| Electrical / starting | 12-volt starter motor, 12-volt alternator (rating varies 15-65 amp by generation), cold-start capability to -20 C (-4 F); glow plug starting aid on Tier 4 Final version |
Weights
| Net dry weight, basic engine without optional attachments | 87 kg (191 lb), consistent across factory spec sheets from 2010 through 2017 |
| Fully equipped / wet configuration weight | Reported around 129 kg in some third-party equipment databases; not published on factory spec sheets. Treat as varies by configuration, likely reflects installed accessories, coolant and oil versus bare net-dry figure |
| Shipping weight / ground pressure | Not published. This is a bare industrial power unit, not a self-propelled machine, so shipping weight and ground pressure are not factory-stated specs |
Dimensions
| Length | 491 mm (19.33 in) |
| Width | 400 mm (15.74 in) |
| Height | 576 mm (22.67 in) |
| Note on dimensions | Factory sheets state these are approximate and final dimensions depend on selected options (inlets, cooling fan, flywheel housing, etc.) |
| Wheelbase / track / ground clearance | Not applicable. This is a bare industrial engine, not a mobile machine chassis |
Performance
| Rated speed range across ratings | 1800-3400 rpm depending on rating and emissions configuration |
| Torque at top-speed rated point | 59 N.m (43.5 lb-ft) at 3400 rpm on the naturally aspirated 21 bkW rating |
| Peak torque on published curve | Approximately 70 N.m (52 lb-ft), occurring near 2200-2400 rpm on the torque curve |
| Intermittent (IND-C) rating definition | Horsepower and speed capability where maximum power and/or speed are cyclic, with time at full load not exceeding 50 percent |
| Service interval | Standard 500-hour service intervals, single-side servicing |
| Mobile-machine performance figures (travel speed, drawbar, dig/lift/dump) | Not applicable. The C1.1 is sold as a bare industrial power unit for integration into equipment such as compactors, light towers, pumps and material handling gear; travel speed and work-tool performance are set by the end machine, not the engine |
Service capacities (summary)
| Cooling system (engine only) | 1.9 L (2.0 US qt) |
| Lube (engine oil) system refill | 3.4-4.4 L (3.6-4.6 US qt) on most factory sheets; one sheet lists a flat 4.4 L (4.6 US qt) refill figure. Treat as a 3.4-4.4 L range across configurations |
| Fuel tank | Not specified. Fuel tank is supplied by the equipment/machine builder and is not part of the bare engine package |
| Hydraulic system | Not applicable. The C1.1 is a bare power unit with no factory-integrated hydraulic system |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
C1.1 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 4.4 L (4.6 US qt / 3.9 Imp qt) full refill; dipstick low mark near 3.4 L (3.6 qt) on some builds | SAE 10W-30 4-stroke diesel engine oil, Cat DEO or equivalent meeting API CI-4 or better. 10W-30 covers most climates, roughly -20 C to 40 C (-4 F to 104 F). Switch to a heavier 15W-40 grade for sustained warm-to-hot ambient conditions; use dealer viscosity chart for cold-region 0W or 5W synthetic blends below -20 C. |
| Cooling system | 1.9 L (2.0 US qt) | Cat ELC (Extended Life Coolant) or a fully formulated antifreeze meeting the Cat EC-1 standard, mixed 50/50 with water for standard freeze protection to about -37 C (-34 F). Traditional Cat DEAC antifreeze is an acceptable alternative where the cooling system is kept on a supplemental coolant additive maintenance program. Exact factory-fill type for this engine build should be confirmed against the specific machine OMM. |
| Fuel | No dedicated engine-level tank capacity published; tank size is set by the machine or generator set builder, not the bare engine manual | No. 1-D or No. 2-D diesel fuel meeting ASTM D975 (or equivalent EN 590), ultra-low-sulfur diesel for emissions compliance. Favor a No. 1-D or winter-blend fuel below 0 C to reduce cold-flow and gelling risk. |
| Grease | Not applicable | No external chassis grease points documented at the bare-engine level; accessory drive and fan bearings are sealed. Grease specification applies at the machine level only - see the host machine OMM for chassis lubrication points. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar C1.1 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 50 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 3,000 h |
|
Servicing the C1.1 beyond the schedule
Predictive Maintenance & Fluid Analysis
Run S·O·S oil sampling on the C1.1's 4.4 L (1.16 gal) sump every 50 hours to catch bearing wear and fuel dilution before they reach the mechanical injection pump. Pair it with a Level 1 coolant sample at 250 hours and a full Level 2 chemical workup at 2000 hours - this small indirect-injection block runs hot in tight engine bays, so additive depletion shows up early. Track blow-by and boost pressure on turbocharged builds; a slow rise flags ring or turbo wear long before compression drops.
Corrective & Common Repairs
Most field failures trace back to the fuel system: a neglected primary filter/water separator starves the mechanical pump and complicates glow-plug-assisted cold starts. Check injection lines and fittings for seepage at every oil change. Turbocharged (T) builds are prone to boost-line leaks and shaft play from dirty intake air - inspect piping and clamps at 250 hours. Belt glazing is common on dusty mini-excavator and light-tower installs; replace alternator and fan belts on condition rather than waiting for the 1000-hour mark.
Overhaul & Rebuild Points
The C1.1 shares its 77 mm x 81 mm bore/stroke architecture with the mechanical 3011C block, so cylinder liners, pistons, and the indirect-injection head are the common rebuild points across both. Check valve lash and turbocharger shaft play at 1000 hours, and re-torque the head and manifold fasteners at 2000 hours. Because this engine sits under the aftertreatment-exempt output threshold, there's no DPF or SCR to service during a rebuild - overhaul timing is driven by oil analysis and blow-by trends, not a fixed hour figure.
Seasonal & Environment Servicing
The C1.1's compact liquid-cooled block and glow-plug-assisted starting handle cold starts reasonably well, but check coolant additive concentration before winter and drain the fuel filter/water separator daily in freezing, condensation-prone climates. In dusty applications - compactors, trenchers, underground mining gear - clean or replace the air precleaner and cleaner element more often than the standard 500-hour mark. Gensets and light towers left idle for weeks need a fuel-stability check and battery load test before restart.
C1.1 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 033-7854 | Filter As-Fuel | Fuel system service | Check fitment → |
| 150-4142 | Filter-Fuel | Fuel system service | Check fitment → |
| 296-0888 | Filter As-Fuel | Fuel system service | Check fitment → |
| 276-1806 | Filter Element-Fuel | Fuel system service | Check fitment → |
| 302-7776 | Bowl-Fuel Filter | Fuel system service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
C1.1 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| SPN 100 FMI 1 | Engine oil pressure data valid but below normal operating range, most severe level | Low oil level, plugged oil filter, worn oil pump, or a failing oil pressure sensor/wiring fault | Shut engine down, check oil level and filter condition, inspect sensor wiring before restart |
| SPN 110 FMI 0 | Engine coolant temperature data valid but above normal operating range, most severe level | Low coolant, blocked radiator or fin pack, failed thermostat or cooling fan, weak water pump | Shut down and allow the engine to cool, check coolant level, clear debris from the radiator core |
| SPN 168 FMI 1 | Electrical system (battery) voltage below normal range | Weak or failing battery, corroded/loose ground connection, undercharging alternator circuit | Load-test the battery, check charging system output, clean and tighten ground straps and connectors |
| SPN 168 FMI 0 | Electrical system (battery) voltage above normal range | Overcharging condition from a faulty voltage regulator or alternator | Measure charging voltage at the battery with engine running, replace regulator or alternator if out of spec |
| SPN 3251 FMI 0 | Aftertreatment diesel particulate filter differential pressure above normal, indicating high soot loading / regeneration needed | Extended low-load or idle duty cycle preventing passive regeneration, restricted exhaust, or a faulty differential pressure sensor/lines | Run a parked (manual) regeneration per the monitor prompt; if the condition repeats, inspect the DPF and pressure sensor lines |
| SPN 97 FMI 3 | Water-in-fuel indicator circuit voltage above normal | Open or shorted wiring at the fuel/water separator sensor, or a failed sensor | Drain the fuel/water separator and inspect the sensor connector and harness |
| SPN 91 FMI 2 | Accelerator/throttle position sensor data erratic, intermittent, or incorrect | Worn throttle position sensor, loose connector, or chafed harness wiring | Inspect the throttle position sensor connector and harness routing, recalibrate or replace the sensor |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
C1.1 attachments & work tools
Product type note
The C1.1 is a 1.13 L three-cylinder industrial diesel engine, not a work-machine chassis. It has no bucket/hammer/coupler work-tool line; its "options" are engine-build configurations and the OEM equipment it is installed into (gensets, pumps, compactors, drill rigs, light towers, trenchers, chippers, aircraft ground support units).
Flywheel and flywheel housing
Standard flywheel is SAE No. 6 1/2. Housing is offered as a choice of SAE No. 5 or a standard backplate housing, letting OEMs match the engine to their driven-equipment bellhousing. EPA Tier 4 Final-certified units default to the backplate housing with a flatface flywheel.
Power take-off (PTO)
A PTO provision is offered on the flywheel/housing end for direct-driving pumps, compressors, or other accessory loads, typical for this small industrial engine class rather than a hydraulic quick-coupler.
Aspiration and rating variants
Offered as naturally aspirated or turbocharged, with power spread roughly 13.7-21 bkW (18-28 bhp) depending on region and emissions rating; U.S. EPA Tier 4 Final ratings and non-regulated/EU ratings run at different rpm bands, so exact output varies by configuration/series.
Cooling system options
Standard build uses a belt-driven water pump, engine-mounted radiator, and cooling fan with guarding, plus extended-life coolant and a drain valve. OEM installers can integrate remote or packaged cooling depending on the end application, but a documented factory remote-radiator kit is not confirmed for this size class.
Air inlet and filtration
Inlet manifold is offered with a choice of inlet orientations/configurations, and the standard air cleaner is a light-duty disposable-element type suited to general industrial duty rather than heavy-dust sites.
Electrical and starting options
Standard electrical package is a 12V starter motor with a 12V alternator (documented at roughly 40-65 amp depending on source), plus glow-plug cold-start assist rated to about -20 C. No factory 24V option is documented for this engine.
Guarding and safety provisions
Fan and belt guarding is fitted around the front accessory drive, consistent with Cat's standard protective-cover practice for small industrial/genset engines; all guards and shutoff circuits are meant to stay installed and active in service.
Finish/paint options
Standard finish is Caterpillar Yellow; OEM/dealer sources note alternate paint colors are available on request for private-label equipment builds.
Driven-equipment integration (OEM "attachments")
In place of work tools, the C1.1 is packaged by OEMs into complete units: diesel generator sets (roughly 6.8-9.5 kVA at 50 Hz in Cat's own genset line), plus pump sets, rollers/compactors, light towers, small drill/bore rigs, trenchers, and chippers/grinders, each using the engine's PTO and flywheel-housing options for its own mounting and drive-coupling hardware.
All C1.1 assemblies by section
Every catalogued assembly group for the Caterpillar C1.1. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
250-6063 Air Cleaner Gp
| 10***14 | Clip | 2 |
| 15***92 | Nut | 2 |
| 19***80 | Washer | 1 |
244-0898 Air Cleaner Gp
| 15***92 | Nut | 2 |
| 17***86 | Clip | 1 |
| 19***80 | Washer | 1 |
308-5610 Connection Gp-Exhaust
| 15***20 | Gasket | 2 |
| 16***72 | Washer; (8x15.4x4-mm Thk) | 4 |
| 16***01 | Bolt | 1 |
308-2309 Connection Gp-Exhaust
| 15***20 | Gasket | 2 |
| 16***01 | Bolt | 8 |
| 19***29 | Flange | 2 |
268-8730 Elbow Gp-Exhaust
| 15***20 | Gasket | 1 |
| 16***72 | Washer; (8x15.4x4-mm Thk) | 4 |
| 18***35 | Bolt | 4 |
252-8373 Elbow Gp-Exhaust
| 15***20 | Gasket | 1 |
| 16***72 | Washer; (8x15.4x4-mm Thk) | 4 |
| 18***35 | Bolt | 4 |
244-0514 Filter Element As-Air
| 24***14 | Filter Element As-Air | 1 |
| 24***11 | Filter Element; (Air Cleaner) | 1 |
| 27***59 | Indicator; (Air Filter Service) | 1 |
295-2363 Filter Gp-Air
| 24***14 | Filter Element As-Air | 1 |
| 24***11 | Filter Element; (Air Cleaner) | 1 |
| 27***59 | Indicator; (Air Filter Service) | 1 |
292-2006 Filter Gp-Air
| 10***14 | Clip | 2 |
| 15***92 | Nut | 2 |
| 24***08 | Hose | 1 |
318-8804 Filter Gp-Air
| 10***14 | Clip | 2 |
| 15***92 | Nut | 2 |
| 24***08 | Hose | 1 |
197-8430 Flange Gp-Exhaust
| 15***20 | Gasket | 1 |
| 16***01 | Bolt | 4 |
| 19***29 | Flange | 1 |
313-1991 Manifold Gp-Exhaust
| 15***60 | Nut | 2 |
| 15***59 | Manifold-Exhaust | 1 |
| 15***60 | Gasket | 1 |
238-1317 Manifold Gp-Exhaust
| 15***60 | Nut | 2 |
| 15***60 | Gasket | 1 |
| 15***61 | Bolt | 4 |
296-0892 Manifold Gp-Exhaust
| 15***60 | Nut | 2 |
| 15***59 | Manifold-Exhaust | 1 |
| 15***60 | Gasket | 1 |
295-2360 Manifold Gp-Exhaust
| 15***60 | Nut | 2 |
| 15***59 | Manifold-Exhaust | 1 |
| 15***60 | Gasket | 1 |
269-0742 Manifold Gp-Exhaust
| 15***60 | Nut | 2 |
| 15***59 | Manifold-Exhaust | 1 |
| 15***60 | Gasket | 1 |
153-6858 Manifold Gp-Exhaust
| 15***60 | Nut | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
| 15***59 | Manifold-Exhaust | 1 |
Basic Engine
342-7618 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***38 | Bolt | 1 |
| 15***90 | Plate | 1 |
329-9765 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***38 | Bolt | 1 |
| 15***90 | Plate | 1 |
231-2304 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***07 | Tappet | 1 |
| 18***05 | Bearing | 1 |
323-2409 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***38 | Bolt | 1 |
| 15***90 | Plate | 1 |
243-6713 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 18***05 | Bearing | 1 |
| 18***06 | Spacer | 1 |
269-0700 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***38 | Bolt | 1 |
| 15***90 | Plate | 1 |
321-3143 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***38 | Bolt | 1 |
| 15***90 | Plate | 1 |
342-9209 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***38 | Bolt | 1 |
| 15***90 | Plate | 1 |
277-4256 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 18***05 | Bearing | 1 |
| 18***06 | Spacer | 1 |
238-1206 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 18***05 | Bearing | 1 |
| 18***06 | Spacer | 1 |
252-8697 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 18***05 | Bearing | 1 |
| 18***06 | Spacer | 1 |
342-8816 Camshaft Gp
| 15***92 | Key-Woodruff | 1 |
| 15***38 | Bolt | 1 |
| 15***90 | Plate | 1 |
304-0255 Adapter Gp-Engine To Tmsn
| 25***41 | Connection As | 1 |
| 30***55 | Connection Group-Electrical | 1 |
342-8133 Cover Gp-Cylinder Block
| 15***92 | Nut | 4 |
| 15***94 | Gasket | 1 |
| 15***82 | Plate | 2 |
342-7620 Cover Gp-Cylinder Block
| 15***92 | Nut | 4 |
| 15***94 | Gasket | 1 |
| 15***97 | Seal-O-Ring | 1 |
329-8577 Cover Gp-Front Housing
| 15***97 | Seal-O-Ring | 1 |
| 31***52 | Plate | 1 |
| 31***53 | Seal-O-Ring | 1 |
269-6997 Cover Gp-Valve Mechanism
| 15***34 | Nut | 3 |
| 15***36 | Washer | 3 |
| 15***39 | Gauze; (Crankcase Breather) | 1 |
269-0695 Cover Gp-Valve Mechanism
| 15***33 | Seal; (Engine Oil Filler Cap) | 1 |
| 21***58 | Cap-Oil Filler; (Engine) | 1 |
| 26***95 | Cover Group-Valve Mechanism | 1 |
269-0741 Cover Gp-Valve Mechanism
| 15***34 | Nut | 3 |
| 15***36 | Washer | 3 |
| 15***39 | Gauze; (Crankcase Breather) | 1 |
238-1328 Cover Gp-Valve Mechanism
| 15***34 | Nut | 3 |
| 15***36 | Washer | 3 |
| 15***39 | Gauze; (Crankcase Breather) | 1 |
270-6707 Cover Gp-Valve Mechanism
| 15***34 | Nut | 3 |
| 15***36 | Washer | 3 |
| 15***39 | Gauze; (Crankcase Breather) | 1 |
231-3022 Cover Gp-Valve Mechanism
| 15***34 | Nut | 3 |
| 15***36 | Washer | 3 |
| 15***39 | Gauze; (Crankcase Breather) | 1 |
313-1986 Cover Gp-Valve Mechanism
| 15***34 | Nut | 3 |
| 15***36 | Washer | 3 |
| 15***39 | Gauze; (Crankcase Breather) | 1 |
231-3874 Crankshaft Gp
| 15***02 | Dowel | 6 |
| 15***03 | Bolt | 6 |
| 15***17 | Gear-Crankshaft; (54 Teeth) | 1 |
313-1962 Crankshaft Gp
| 15***97 | Bolt | 2 |
| 15***02 | Dowel | 6 |
| 15***03 | Bolt | 6 |
269-0677 Crankshaft Gp
| 15***97 | Bolt | 2 |
| 15***02 | Dowel | 6 |
| 15***03 | Bolt | 6 |
341-3021 Cylinder Block Gp
| 30***98 | Filter Group-Engine Oil | 1 |
| 30***35 | Mounting Group-Engine Oil Filter | 1 |
| 30***20 | Plug Group-Oil Pan; -Engine | 1 |
313-1957 Cylinder Block Gp
| 15***85 | Plug | 1 |
| 15***87 | Plug | 4 |
| 15***91 | Plug | 1 |
341-3010 Cylinder Block Gp
| 30***98 | Filter Group-Engine Oil | 1 |
| 30***35 | Mounting Group-Engine Oil Filter | 1 |
| 30***20 | Plug Group-Oil Pan; -Engine | 1 |
231-8824 Cylinder Block Gp
| 15***85 | Plug | 1 |
| 15***87 | Plug | 4 |
| 15***91 | Plug | 1 |
269-0676 Cylinder Block Gp
| 15***85 | Plug | 1 |
| 15***87 | Plug | 4 |
| 15***91 | Plug | 1 |
341-3020 Cylinder Block Gp
| 30***98 | Filter Group-Engine Oil | 1 |
| 30***35 | Mounting Group-Engine Oil Filter | 1 |
| 30***20 | Plug Group-Oil Pan; -Engine | 1 |
240-0271 Cylinder Block Gp-Long
| 23***15 | Plug; (Sealing) | 1 |
| 23***16 | Plug; (Sealing) | 2 |
| 24***71 | Cylinder Block Group-Long | 1 |
234-6036 Cylinder Block Gp-Long
| 23***36 | Cylinder Block Group-Long | 1 |
| 23***15 | Plug; (Sealing) | 1 |
| 23***16 | Plug; (Sealing) | 2 |
246-7892 Cylinder Block Gp-Long
| 23***15 | Plug; (Sealing) | 1 |
| 23***16 | Plug; (Sealing) | 2 |
| 24***92 | Cylinder Block Group-Long | 1 |
246-4340 Cylinder Block Gp-Long
| 23***15 | Plug; (Sealing) | 1 |
| 23***16 | Plug; (Sealing) | 2 |
| 24***40 | Cylinder Block Group-Long | 1 |
319-7268 Cylinder Head As
| 15***54 | Seal | 3 |
| 15***55 | Valve-Exhaust | 3 |
| 15***56 | Pin-Cotter | 12 |
231-2074 Cylinder Head Gp
| 15***75 | Bolt | 11 |
| 15***78 | Bolt | 3 |
| 15***44 | Stud | 2 |
269-0691 Cylinder Head Gp
| 15***75 | Bolt | 11 |
| 15***78 | Bolt | 3 |
| 15***44 | Stud | 2 |
313-1964 Cylinder Head Gp
| 15***75 | Bolt | 11 |
| 15***78 | Bolt | 3 |
| 15***44 | Stud | 4 |
231-2072 Cylinder Head Gp
| 15***55 | Valve-Exhaust | 3 |
| 15***56 | Pin-Cotter | 12 |
| 15***57 | Cap | 6 |
295-2362 Drive Gp-Auxiliary
| 15***92 | Key-Woodruff | 1 |
| 15***96 | Nut | 1 |
| 15***97 | Seal-O-Ring | 1 |
322-3808 Drive Gp-Fan
| 24***63 | Bolt; (M6x1x16-mm)(M6x1x16-mm) | 4 |
| 32***08 | Drive Group-Fan | 1 |
301-1462 Drive Gp-Fan
| 16***41 | Bolt | 4 |
| 18***46 | Extension-Fan | 1 |
| 18***47 | Bolt | 4 |
313-1966 Drive Gp-Pump
| 15***36 | Washer | 2 |
| 15***53 | Seal-O-Ring | 1 |
| 15***81 | Bolt | 1 |
297-1978 Extension Gp-Fan
| 15***84 | Washer | 4 |
| 16***41 | Bolt | 4 |
| 18***46 | Extension-Fan | 1 |
226-7645 Fastener Gp-Flywheel
| 15***75 | Bolt | 2 |
| 15***67 | Plate | 1 |
| 15***68 | Bolt | 8 |
197-8541 Fastener Gp-Flywheel Housing -Starting Motor
| 18***79 | Nut | 1 |
| 19***41 | Fastener Group-Flywheel Housing; -Starting Motor | 1 |
318-8880 Flywheel Gp
| 15***65 | Gear-Starter; (96-Teeth) | 1 |
| 15***66 | Bolt | 6 |
| 31***80 | Flywheel Group | 1 |
252-9517 Flywheel Gp
| 15***75 | Bolt | 2 |
| 15***66 | Bolt | 6 |
| 15***68 | Bolt | 8 |
197-8015 Flywheel Gp
| 13***46 | Bolt | 8 |
| 13***66 | Housing-Flywheel | 1 |
| 15***65 | Gear-Starter; (96-Teeth) | 1 |
231-2918 Flywheel Gp
| 15***75 | Bolt | 2 |
| 15***65 | Gear-Starter; (96-Teeth) | 1 |
| 15***66 | Bolt | 6 |
270-6703 Flywheel Gp
| 13***46 | Bolt | 8 |
| 15***65 | Gear-Starter; (96-Teeth) | 1 |
| 15***66 | Bolt | 6 |
269-0704 Flywheel Gp
| 15***65 | Gear-Starter; (96-Teeth) | 1 |
| 15***66 | Bolt | 6 |
| 26***04 | Flywheel Group | 1 |
201-7621 Flywheel Gp
| 13***46 | Bolt | 8 |
| 13***49 | Housing-Flywheel | 1 |
| 15***65 | Gear-Starter; (96-Teeth) | 1 |
313-1970 Flywheel Gp
| 15***65 | Gear-Starter; (96-Teeth) | 1 |
| 15***66 | Bolt | 6 |
| 31***70 | Flywheel Group | 1 |
325-5586 Flywheel Gp
| 15***66 | Bolt | 6 |
| 32***86 | Flywheel Group | 1 |
313-1969 Housing Gp-Flywheel
| 13***42 | Bolt; (Starter Motor) | 2 |
| 13***46 | Bolt | 8 |
| 13***66 | Housing-Flywheel | 1 |
292-2001 Housing Gp-Flywheel
| 13***42 | Bolt; (Starter Motor) | 2 |
| 15***75 | Bolt | 2 |
| 15***67 | Plate | 1 |
342-7619 Housing Gp-Flywheel
| 15***75 | Bolt | 2 |
| 15***67 | Plate | 1 |
| 15***68 | Bolt | 8 |
318-8879 Housing Gp-Flywheel
| 13***42 | Bolt; (Starter Motor) | 2 |
| 13***46 | Bolt | 8 |
| 13***49 | Housing-Flywheel | 1 |
269-0703 Housing Gp-Flywheel
| 13***42 | Bolt; (Starter Motor) | 2 |
| 13***46 | Bolt | 8 |
| 13***66 | Housing-Flywheel | 1 |
313-1967 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 5 |
| 15***78 | Seal | 1 |
238-1179 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 3 |
| 15***38 | Bolt | 1 |
243-6633 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 3 |
| 15***38 | Bolt | 1 |
277-4255 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 3 |
| 15***38 | Bolt | 1 |
342-9207 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 5 |
| 15***78 | Seal | 1 |
252-8682 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 3 |
| 15***38 | Bolt | 1 |
231-2293 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 3 |
| 15***38 | Bolt | 1 |
323-2407 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 5 |
| 15***78 | Seal | 1 |
342-8790 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 5 |
| 15***78 | Seal | 1 |
321-3140 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 5 |
| 15***78 | Seal | 1 |
284-8772 Housing Gp-Front
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***60 | Nut | 2 |
| 15***62 | Bolt | 3 |
342-7616 Housing Gp-Front
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 5 |
| 15***78 | Seal | 1 |
269-0696 Housing Gp-Front
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***60 | Nut | 2 |
| 15***62 | Bolt | 3 |
339-3014 Kit-Front Gear
| 15***48 | Cover | 1 |
| 15***49 | Spring | 1 |
| 15***50 | Collar | 1 |
339-3016 Kit-Front Gear
| 15***48 | Cover | 1 |
| 15***49 | Spring | 1 |
| 15***50 | Collar | 1 |
313-2022 Lifting Gp-Engine
| 15***75 | Bolt | 2 |
| 19***73 | Plate; (Front) | 1 |
| 19***74 | Plate; (Rear) | 1 |
153-6373 Lifting Gp-Engine
| 15***73 | Lifting Group-Engine | 1 |
| 15***75 | Bolt | 2 |
| 19***73 | Plate; (Front) | 1 |
269-6994 Lifting Gp-Engine
| 15***84 | Washer | 2 |
| 16***41 | Bolt | 2 |
| 23***28 | Plate-Lifting | 2 |
231-2961 Mounting Gp-Alternator
| 15***61 | Bolt | 1 |
| 16***40 | Bolt | 2 |
| 23***60 | Lever-Adjusting | 1 |
274-6701 Mounting Gp-Bracket
| 19***48 | Bolt | 16 |
| 27***01 | Mounting Group-Bracket | 1 |
| 33***44 | Bracket | 4 |
269-6991 Mounting Gp-Fan Drive
| 15***39 | Plate | 1 |
| 24***63 | Bolt; (M6x1x16-mm)(M6x1x16-mm) | 4 |
| 26***91 | Mounting Group-Fan Drive | 1 |
197-8002 Mounting Gp-Fan Drive
| 18***39 | Fan-Suction | 1 |
| 19***02 | Mounting Group-Fan Drive | 1 |
| 24***63 | Bolt; (M6x1x16-mm)(M6x1x16-mm) | 4 |
269-0683 Pan Gp-Oil -Engine
| 15***12 | Washer | 2 |
| 15***33 | Bolt | 21 |
| 15***35 | Seal-O-Ring | 1 |
252-9485 Pan Gp-Oil -Engine
| 15***33 | Seal; (Engine Oil Filler Cap) | 1 |
| 15***36 | Washer | 4 |
| 15***30 | Pan-Oil; (Engine) | 1 |
269-6992 Pan Gp-Oil -Engine
| 09***08 | Seal-O-Ring | 1 |
| 15***92 | Nut | 3 |
| 15***33 | Seal; (Engine Oil Filler Cap) | 2 |
238-1296 Pan Gp-Oil -Engine
| 15***33 | Seal; (Engine Oil Filler Cap) | 1 |
| 15***36 | Washer | 2 |
| 15***12 | Washer | 2 |
231-8934 Pan Gp-Oil -Engine
| 15***36 | Washer | 2 |
| 15***30 | Pan-Oil; (Engine) | 1 |
| 15***32 | Washer | 2 |
313-1973 Pan Gp-Oil
| 15***33 | Bolt | 21 |
| 15***35 | Seal-O-Ring | 1 |
| 15***38 | Bolt | 3 |
319-7352 Pan Gp-Oil
| 15***33 | Bolt | 21 |
| 15***35 | Seal-O-Ring | 1 |
| 15***38 | Bolt | 3 |
250-6050 Pan Gp-Oil -Engine
| 15***33 | Seal; (Engine Oil Filler Cap) | 1 |
| 15***36 | Washer | 2 |
| 15***12 | Washer | 2 |
342-7622 Parts Gp-Miscellaneous
| 15***60 | Gasket | 1 |
| 18***65 | Plug | 1 |
| 23***20 | Seal-Valve Cover; (Mechanism) | 1 |
269-0679 Piston & Rod Gp
| 15***36 | Bushing | 1 |
| 15***37 | Bolt | 2 |
| 15***38 | Nut | 2 |
313-1963 Piston & Rod Gp
| 15***36 | Bushing | 1 |
| 15***37 | Bolt | 2 |
| 15***38 | Nut | 2 |
231-8823 Piston & Rod Gp
| 15***36 | Bushing | 1 |
| 15***37 | Bolt | 2 |
| 15***38 | Nut | 2 |
309-6720 Plug Gp-Oil Pan -Engine
| 15***12 | Washer | 2 |
| 21***34 | Plug-Drain; (Engine Oil Pan) | 2 |
| 30***20 | Plug Group-Oil Pan; -Engine | 1 |
302-6763 Plug Gp-Oil Pan
| 15***12 | Washer | 2 |
| 21***34 | Plug-Drain; (Engine Oil Pan) | 2 |
| 30***63 | Plug Group-Oil Pan | 1 |
269-0720 Pulley Gp-Crankshaft
| 15***92 | Key-Woodruff | 1 |
| 15***96 | Nut | 1 |
| 26***20 | Pulley Group-Crankshaft | 1 |
269-6995 Pulley Gp-Crankshaft
| 15***92 | Key-Woodruff | 1 |
| 15***96 | Nut | 1 |
| 15***82 | Plate | 1 |
153-6488 Pulley Gp-Crankshaft
| 15***92 | Nut | 4 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***91 | Washer | 1 |
226-7578 Pulley Gp-Crankshaft
| 15***92 | Nut | 4 |
| 15***92 | Key-Woodruff | 1 |
| 15***94 | Gasket | 1 |
313-1976 Pulley Gp-Crankshaft
| 15***92 | Key-Woodruff | 1 |
| 15***96 | Nut | 1 |
| 31***76 | Pulley Group-Crankshaft | 1 |
322-3805 Pulley Gp-Crankshaft
| 15***92 | Key-Woodruff | 1 |
| 15***96 | Nut | 1 |
| 32***05 | Pulley Group-Crankshaft | 1 |
238-1278 Pulley Gp-Water Pump
| 15***63 | Pulley-Water Pump | 1 |
| 18***42 | V-Belt; (Alternator, Water Pump) | 1 |
| 23***78 | Pulley Group-Water Pump | 1 |
243-6724 Pulley Gp-Water Pump
| 15***63 | Pulley-Water Pump | 1 |
| 18***42 | V-Belt; (Alternator, Water Pump) | 1 |
| 24***24 | Pulley Group-Water Pump | 1 |
231-7909 Pulley Gp-Water Pump
| 15***63 | Pulley-Water Pump | 1 |
| 23***09 | Pulley Group-Water Pump | 1 |
313-1972 Pulley Gp-Water Pump
| 15***63 | Pulley-Water Pump | 1 |
| 31***72 | Pulley Group-Water Pump | 1 |
269-0710 Pulley Gp-Water Pump
| 15***63 | Pulley-Water Pump | 1 |
| 18***42 | V-Belt; (Alternator, Water Pump) | 1 |
| 26***10 | Pulley Group-Water Pump | 1 |
313-1983 V-Belt Gp
| 18***42 | V-Belt; (Alternator, Water Pump) | 1 |
| 31***83 | V-Belt Group; -Alternator | 1 |
319-7355 V-Belt Gp
| 18***42 | V-Belt; (Alternator, Water Pump) | 1 |
| 31***55 | V-Belt Group; -Includes 1 Belt | 1 |
231-2213 Valve Mechanism Gp
| 09***41 | Bolt-Socket Head; (M4x0.7x10-mm) | 1 |
| 15***77 | Lever-Lh | 3 |
| 15***79 | Lever-Rh | 3 |
313-1965 Valve Mechanism Gp
| 09***41 | Bolt-Socket Head; (M4x0.7x10-mm) | 1 |
| 15***77 | Lever-Lh | 3 |
| 15***79 | Lever-Rh | 3 |
269-0694 Valve Mechanism Gp
| 09***41 | Bolt-Socket Head; (M4x0.7x10-mm) | 1 |
| 15***77 | Lever-Lh | 3 |
| 15***79 | Lever-Rh | 3 |
Cooling System
304-3558 Cover Gp-Regulator Housing
| 30***58 | Cover Group-Regulator Housing | 1 |
| 31***51 | Housing-Water Regulator | 1 |
238-0129 Fan Gp-Blower
| 15***61 | Bolt | 4 |
| 16***60 | Plate | 1 |
| 23***28 | Fan-Blower | 1 |
269-0725 Fan Gp-Blower
| 15***40 | Bolt | 4 |
| 18***41 | Fan-Blower | 1 |
| 26***25 | Fan Group-Blower | 1 |
255-1301 Fan Gp-Blower
| 15***61 | Bolt | 4 |
| 23***28 | Fan-Blower | 1 |
| 25***97 | Plate | 1 |
291-3794 Fan Gp-Blower
| 15***39 | Plate | 1 |
| 15***40 | Bolt | 4 |
| 23***28 | Fan-Blower | 1 |
255-1303 Fan Gp-Suction
| 15***61 | Bolt | 4 |
| 25***97 | Plate | 1 |
| 25***03 | Fan Group-Suction | 1 |
313-1981 Fan Gp-Suction
| 18***39 | Fan-Suction | 1 |
| 31***81 | Fan Group-Suction | 1 |
241-5822 Fan Gp-Suction
| 15***61 | Bolt | 4 |
| 16***60 | Plate | 1 |
| 24***22 | Fan Group-Suction | 1 |
297-1972 Fan Gp-Suction
| 18***51 | Fan-Suction | 1 |
| 29***72 | Fan Group-Suction | 1 |
274-6700 Hose Gp-Radiator -Upper
| 24***03 | Hose-Radiator; (Upper) | 1 |
| 27***00 | Hose Group-Radiator; -Upper | 1 |
313-1980 Housing Gp-Water Regulator
| 15***40 | Bolt | 2 |
| 23***58 | Gasket-Cover; (Water Temperature Regulator) | 1 |
| 31***51 | Housing-Water Regulator | 1 |
153-7641 Mounting Gp-Fan
| 15***39 | Plate | 1 |
| 15***41 | Mounting Group-Fan | 1 |
| 24***63 | Bolt; (M6x1x16-mm)(M6x1x16-mm) | 4 |
313-1978 Pump Gp-Water
| 15***60 | Nut | 1 |
| 15***62 | Bolt | 4 |
| 15***17 | Plug | 2 |
269-0723 Pump Gp-Water
| 15***60 | Nut | 2 |
| 15***61 | Bolt | 4 |
| 15***62 | Bolt | 2 |
238-1219 Pump Gp-Water
| 15***07 | Stud | 2 |
| 15***60 | Nut | 5 |
| 15***62 | Bolt | 1 |
267-0021 Pump Gp-Water
| 15***60 | Nut | 3 |
| 15***61 | Bolt | 4 |
| 15***62 | Bolt | 1 |
231-8188 Pump Gp-Water
| 15***60 | Nut | 3 |
| 15***61 | Bolt | 4 |
| 15***62 | Bolt | 1 |
231-7854 Pump Gp-Water
| 15***17 | Plug | 1 |
| 15***20 | Bolt | 3 |
| 23***54 | Pump Group-Water | 1 |
250-6066 Radiator Gp
| 06***58 | Clamp-Hose | 4 |
| 15***92 | Nut | 2 |
| 15***75 | Bolt | 1 |
318-8803 Radiator Gp
| 06***58 | Clamp-Hose | 4 |
| 12***15 | Bolt; (M8x16x1.25-mm) | 10 |
| 15***92 | Nut | 2 |
244-0897 Radiator Gp
| 06***58 | Clamp-Hose | 4 |
| 15***92 | Nut | 2 |
| 15***75 | Bolt | 1 |
292-2009 Radiator Gp
| 06***58 | Clamp-Hose | 4 |
| 15***92 | Nut | 1 |
| 15***61 | Bolt | 4 |
Electrical And Starting System
238-1318 Alternator Gp-Charging
| 15***61 | Bolt | 1 |
| 15***84 | Washer | 1 |
| 16***40 | Bolt | 2 |
297-1979 Alternator Gp-Charging
| 15***40 | Bolt | 2 |
| 15***44 | Bolt | 2 |
| 15***99 | Washer | 1 |
197-8021 Alternator Gp-Charging
| 15***56 | Bolt | 2 |
| 15***84 | Washer | 1 |
| 16***40 | Bolt | 2 |
319-7354 Alternator Gp-Charging
| 15***61 | Bolt | 3 |
| 15***40 | Bolt | 2 |
| 15***99 | Washer | 1 |
292-2005 Alternator Gp-Charging
| 15***56 | Bolt | 2 |
| 15***84 | Washer | 1 |
| 16***40 | Bolt | 2 |
313-1982 Alternator Gp-Charging
| 15***61 | Bolt | 1 |
| 15***84 | Washer | 1 |
| 16***40 | Bolt | 2 |
269-0726 Alternator Gp-Charging
| 15***40 | Bolt | 2 |
| 15***44 | Bolt | 2 |
| 15***99 | Washer | 1 |
183-3938 Alternator Gp-Charging
| 15***03 | Washer | 1 |
| 15***84 | Washer | 1 |
| 18***38 | Alternator Group-Charging | 1 |
252-9528 Alternator Gp-Charging
| 15***44 | Bolt | 2 |
| 15***99 | Washer | 1 |
| 16***40 | Bolt | 2 |
217-2778 Connection Gp-Electrical
| 18***37 | Connector As | 1 |
| 20***76 | Connection | 1 |
| 21***78 | Connection Group-Electrical | 1 |
308-2319 Connection Gp-Electrical
| 19***55 | Connection; (Starting Motor) | 1 |
| 25***41 | Connection As | 1 |
| 30***19 | Connection Group-Electrical, Pipe (L12) | 1 |
252-9536 Connection Gp-Electrical
| 18***37 | Connector As | 1 |
| 19***55 | Connection; (Starting Motor) | 1 |
| 25***36 | Connection Group-Electrical | 1 |
244-0486 Connection Gp-Electrical
| 18***37 | Connector As | 1 |
| 19***55 | Connection; (Starting Motor) | 2 |
| 24***86 | Connection Group-Electrical | 1 |
269-0776 Connection Gp-Electrical
| 15***20 | Gasket | 1 |
| 16***01 | Bolt | 4 |
| 18***79 | Nut | 1 |
219-7601 Connection Gp-Electrical
| 19***55 | Connection; (Starting Motor) | 2 |
| 21***01 | Connection Group-Electrical | 1 |
254-5545 Connection Gp-Electrical
| 25***41 | Connection As | 1 |
| 25***45 | Connection Group-Electrical | 1 |
269-6998 Connection Gp-Electrical
| 18***37 | Connector As | 1 |
| 26***98 | Connection Group-Electrical | 1 |
313-2021 Glow Plug Gp
| 15***75 | Wire | 1 |
| 23***39 | Nut-Flange | 3 |
| 30***72 | Glow Plug | 3 |
231-2835 Glow Plug Gp
| 15***75 | Wire | 1 |
| 15***76 | Nut | 1 |
| 15***77 | Washer | 1 |
269-0760 Glow Plug Gp
| 15***75 | Wire | 1 |
| 15***76 | Nut | 1 |
| 15***77 | Washer | 1 |
320-9114 Shutoff Gp-Electrical
| 23***62 | Connector | 1 |
| 31***38 | Box | 1 |
| 32***14 | Shutoff Group-Electrical | 1 |
226-7640 Shutoff Gp-Electrical
| 22***40 | Shutoff Group-Electrical | 1 |
| 34***99 | Auto Shut Down | 1 |
313-2023 Solenoid Gp-Shutoff
| 15***12 | Washer | 1 |
| 30***14 | Lever-Control | 1 |
| 31***23 | Solenoid Group-Shutoff; -Fuel Shutoff | 1 |
340-8308 Starting Motor Gp-Electric
| 14***83 | Bolt; (M10x1.5x45-mm)(Starter Motor) | 2 |
| 33***03 | Kit-Terminal | 1 |
| 34***08 | Starting Motor Group-Electric; -12-Volt | 1 |
138-7454 Starting Motor Gp-Electric
| 13***54 | Starting Motor Group-Electric | 1 |
| 24***73 | Bushing | 1 |
| 24***76 | Bushing | 1 |
201-7635 Starting Motor Gp-Electric
| 13***42 | Bolt; (Starter Motor) | 2 |
| 13***54 | Starting Motor Group-Electric | 1 |
| 15***99 | Washer | 2 |
269-0707 Starting Motor Gp-Electric
| 13***54 | Starting Motor Group-Electric | 1 |
| 26***07 | Starting Motor Group-Electric | 1 |
313-1971 Starting Motor Gp-Electric
| 13***54 | Starting Motor Group-Electric | 1 |
| 31***71 | Starting Motor Group-Electric | 1 |
319-7351 Starting Motor Gp-Electric
| 13***54 | Starting Motor Group-Electric | 1 |
| 31***51 | Starting Motor Group-Electric | 1 |
292-2002 Starting Motor Gp-Electric
| 13***54 | Starting Motor Group-Electric | 1 |
| 29***02 | Starting Motor Group-Electric | 1 |
252-9527 Starting Motor Gp-Electric
| 13***54 | Starting Motor Group-Electric | 1 |
| 13***42 | Bolt; (Starter Motor) | 2 |
| 15***99 | Washer | 2 |
231-2924 Starting Motor Gp-Electric
| 15***99 | Washer | 2 |
| 15***03 | Washer | 2 |
| 16***72 | Washer; (8x15.4x4-mm Thk) | 1 |
268-8732 Switch Gp-Heat Start
| 18***58 | Cap; (Engine Ignition) | 1 |
| 18***60 | Plate | 1 |
| 23***77 | Switch As-Start; (Engine) | 1 |
300-3886 Switch Gp-Press & Temp
| 15***36 | Washer | 2 |
| 23***99 | Switch-Temperature; (Engine Coolant) | 1 |
| 29***83 | Adapter | 1 |
231-3000 Switch Gp-Press & Temp
| 15***36 | Washer | 2 |
| 15***81 | Bolt | 1 |
| 23***00 | Switch Group-Press & Temp | 1 |
243-6726 Switch Gp-Press & Temp
| 15***36 | Washer | 2 |
| 18***65 | Plug | 1 |
| 24***26 | Switch Group-Press & Temp | 1 |
313-2024 Switch Gp-Pressure -Engine Oil
| 15***36 | Washer | 2 |
| 18***65 | Plug | 1 |
| 29***93 | Switch-Pressure; (Engine Oil)(Engine Oil) | 1 |
269-0724 Switch Gp-Pressure -Engine Oil
| 15***36 | Washer | 2 |
| 15***81 | Bolt | 1 |
| 26***24 | Switch Group-Pressure; -Engine Oil | 1 |
292-2004 Switch Gp-Pressure
| 15***36 | Washer | 2 |
| 18***65 | Plug | 1 |
| 29***93 | Switch-Pressure; (Engine Oil)(Engine Oil) | 1 |
197-8029 Switch Gp-Start -Engine
| 18***58 | Cap; (Engine Ignition) | 1 |
| 18***60 | Plate | 1 |
| 19***29 | Switch Group-Start; -Engine | 1 |
308-2314 Switch Gp-Start
| 18***58 | Cap; (Engine Ignition) | 1 |
| 18***60 | Plate | 1 |
| 23***77 | Switch As-Start; (Engine) | 1 |
304-3559 Switch Gp-Temperature
| 30***59 | Switch Group-Temperature | 1 |
| 34***00 | Switch-Temperature; (Coolant) | 1 |
269-0722 Switch Gp-Temperature -Coolant
| 26***22 | Switch Group-Temperature; -Coolant | 1 |
| 34***00 | Switch-Temperature; (Coolant) | 1 |
313-2035 Switch Gp-Temperature -Coolant
| 31***35 | Switch Group-Temperature; -Coolant | 1 |
| 34***00 | Switch-Temperature; (Coolant) | 1 |
269-6996 Switch Gp-Temperature
| 15***36 | Washer | 2 |
| 18***65 | Plug | 2 |
| 26***96 | Switch Group-Temperature | 1 |
Engine Arrangement
225-0600 Engine Ar-Primary
| 22***00 | Engine Ar-Primary | 1 |
| 25***48 | Kit-Gasket; (1.3-mm Head Gasket) | 1 |
| 25***57 | Kit-Gasket; (1.2-mm Head Gasket) | 1 |
290-7050 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
241-8602 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
241-8610 Engine Ar-Primary
| 24***10 | Engine Ar-Primary | 1 |
249-0047 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
310-7144 Engine Ar-Primary
| 31***44 | Engine Ar-Primary | 1 |
223-1504 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
| 15***41 | Mounting Group-Fan | 1 |
245-7473 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
225-0631 Engine Ar-Primary
| 22***31 | Engine Ar-Primary | 1 |
| 26***30 | Elbow Group-Exhaust | 1 |
| 26***32 | Switch Group-Heat Start | 1 |
241-8603 Engine Ar-Primary
| 24***03 | Engine Ar-Primary | 1 |
246-5212 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
318-1668 Engine Ar-Primary
| 30***98 | Filter Group-Engine Oil | 1 |
| 30***14 | Switch Group-Start | 1 |
| 30***19 | Connection Group-Electrical, Pipe (L12) | 1 |
259-2193 Engine Ar-Primary
| 25***93 | Engine Ar-Primary | 1 |
268-1384 Engine Ar-Primary
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
252-5809 Engine Ar-Primary
| 15***58 | Manifold Group-Exhaust | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
| 19***29 | Switch Group-Start; -Engine | 1 |
242-6047 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
288-5191 Engine Ar-Primary
| 28***91 | Engine Ar-Primary | 1 |
241-8600 Engine Ar-Primary
| 24***00 | Engine Ar-Primary | 1 |
241-8608 Engine Ar-Primary
| 24***08 | Engine Ar-Primary | 1 |
253-6081 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
225-0591 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
291-0265 Engine Ar-Primary
| 29***65 | Engine Ar-Primary | 1 |
242-3136 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
241-8599 Engine Ar-Primary
| 24***99 | Engine Ar-Primary | 1 |
248-3107 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 19***02 | Mounting Group-Fan Drive | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
242-6043 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
281-4602 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
229-9738 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 19***02 | Mounting Group-Fan Drive | 1 |
225-0582 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
260-0125 Engine Ar-Primary
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
241-8598 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
241-5703 Engine Ar-Primary
| 24***03 | Engine Ar-Primary | 1 |
241-8611 Engine Ar-Primary
| 24***11 | Engine Ar-Primary | 1 |
241-8607 Engine Ar-Primary
| 24***07 | Engine Ar-Primary | 1 |
272-6965 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
318-1669 Engine Ar-Primary
| 30***98 | Filter Group-Engine Oil | 1 |
| 30***09 | Connection Group-Exhaust | 1 |
| 30***14 | Switch Group-Start | 1 |
248-0666 Engine Ar-Primary
| 15***70 | Pump Group-Fuel Transfer | 1 |
| 19***17 | Regulator Group-Voltage; -Alternator | 1 |
| 20***21 | Flywheel Group | 1 |
241-8604 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
241-8609 Engine Ar-Primary
| 24***09 | Engine Ar-Primary | 1 |
242-3141 Engine Ar-Primary
| 15***73 | Lifting Group-Engine | 1 |
| 15***88 | Pulley Group-Crankshaft | 1 |
| 15***58 | Manifold Group-Exhaust | 1 |
241-8606 Engine Ar-Primary
| 24***06 | Engine Ar-Primary | 1 |
241-5704 Engine Ar-Primary
| 24***04 | Engine Ar-Primary | 1 |
329-2155 Engine Ar-Primary
| 30***98 | Filter Group-Engine Oil | 1 |
| 30***09 | Connection Group-Exhaust | 1 |
| 30***14 | Switch Group-Start | 1 |
225-0605 Engine Ar-Primary
| 22***05 | Engine Ar-Primary | 1 |
| 25***48 | Kit-Gasket; (1.3-mm Head Gasket) | 1 |
| 25***57 | Kit-Gasket; (1.2-mm Head Gasket) | 1 |
Fuel System
342-8800 Control Gp-Governor
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***92 | Nut | 1 |
| 15***15 | Washer | 2 |
329-9764 Control Gp-Governor
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***92 | Nut | 1 |
| 15***15 | Washer | 2 |
342-7617 Control Gp-Governor
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***92 | Nut | 1 |
| 15***15 | Washer | 2 |
342-9208 Control Gp-Governor
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***92 | Nut | 1 |
| 15***15 | Washer | 2 |
342-1268 Plate Gp-Cover
| 15***38 | Bolt | 1 |
| 16***41 | Bolt | 1 |
| 18***23 | Cover | 1 |
205-1614 Cover Gp-Fuel Transfer
| 15***38 | Bolt | 2 |
| 16***41 | Bolt | 1 |
| 18***23 | Cover | 1 |
269-6993 Filter & Lines Gp-Fuel
| 03***49 | Plug | 2 |
| 03***54 | Filter As-Fuel | 1 |
| 06***69 | Olive-Fuel Tube | 2 |
269-0743 Filter & Lines Gp-Fuel
| 03***00 | Washer; (0.531x0.718x0.064-In Thk) | 3 |
| 03***49 | Plug | 2 |
| 03***54 | Filter As-Fuel | 1 |
226-2260 Filter & Lines Gp-Fuel
| 03***49 | Plug | 1 |
| 03***54 | Filter As-Fuel | 1 |
| 06***69 | Olive-Fuel Tube | 2 |
231-2897 Filter & Lines Gp-Fuel
| 15***42 | Filter-Fuel | 1 |
| 15***75 | Bolt | 2 |
| 15***03 | Washer | 2 |
301-1444 Filter Gp-Fuel
| 03***49 | Plug | 2 |
| 03***54 | Filter As-Fuel | 1 |
| 06***69 | Olive-Fuel Tube | 2 |
296-0890 Filter Gp-Fuel
| 15***42 | Filter-Fuel | 1 |
| 15***82 | Connector | 2 |
| 29***88 | Filter As-Fuel | 1 |
205-1668 Filter Gp-Fuel
| 15***92 | Nut | 1 |
| 15***84 | Washer | 1 |
| 16***41 | Bolt | 1 |
292-2012 Filter Gp-Water Sep & Fuel
| 27***04 | Filter Group-Fuel | 1 |
| 27***06 | Filter Element-Fuel; (Filter) | 1 |
| 29***12 | Filter Group-Water Sep & Fuel | 1 |
238-1269 Governor Gp
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***60 | Nut | 1 |
| 15***83 | Pin | 1 |
323-2408 Governor Gp
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***92 | Nut | 1 |
| 15***15 | Washer | 2 |
231-7171 Governor Gp
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***60 | Nut | 1 |
| 15***83 | Pin | 1 |
277-4257 Governor Gp
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***60 | Nut | 1 |
| 15***78 | Seal | 1 |
321-3142 Governor Gp
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***92 | Nut | 1 |
| 15***15 | Washer | 2 |
243-6715 Governor Gp
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***60 | Nut | 1 |
| 15***83 | Pin | 1 |
269-0697 Protection Gp-Fuel System
| 15***87 | Washer | 2 |
| 19***96 | Bolt | 1 |
| 19***97 | Nut | 1 |
296-0893 Protection Gp-Fuel System
| 15***87 | Washer | 2 |
| 19***96 | Bolt | 1 |
| 19***97 | Nut | 1 |
252-8685 Protection Gp-Fuel System
| 13***11 | Cap; (Tamper Resistant) | 1 |
| 15***60 | Nut | 1 |
| 15***83 | Pin | 1 |
269-0755 Pump Gp-Filter & Fuel Transfer
| 15***92 | Nut | 1 |
| 15***38 | Bolt | 2 |
| 15***84 | Washer | 1 |
269-6990 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 0 |
| 15***15 | Washer | 2 |
238-1215 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***12 | Washer | 1 |
323-2410 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***15 | Washer | 1 |
293-2859 Pump Gp-Fuel Injection
| 20***26 | Bolt-Special; (Banjo) | 1 |
| 20***27 | Washer | 2 |
| 20***28 | Connector | 1 |
303-0470 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***12 | Washer | 1 |
269-0702 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***12 | Washer | 1 |
| 15***15 | Washer | 2 |
319-7350 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***15 | Washer | 1 |
325-4892 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***12 | Washer | 1 |
293-2897 Pump Gp-Fuel Injection
| 20***26 | Bolt-Special; (Banjo) | 1 |
| 20***27 | Washer | 2 |
| 20***28 | Connector | 1 |
232-0294 Pump Gp-Fuel Injection
| 15***60 | Nut | 3 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***12 | Washer | 1 |
252-9479 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***12 | Washer | 1 |
313-1968 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***15 | Washer | 1 |
328-1432 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***15 | Washer | 1 |
291-2360 Pump Gp-Fuel Injection
| 15***60 | Nut | 2 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***15 | Washer | 2 |
321-3334 Pump Gp-Fuel Injection
| 15***60 | Nut | 4 |
| 15***85 | Shim; (0.2-mm Thk) | 1 |
| 15***15 | Washer | 1 |
268-8727 Pump Gp-Fuel Priming
| 19***40 | Pump Group-Fuel Priming | 1 |
| 26***27 | Pump Group-Fuel Priming | 1 |
197-8538 Pump Gp-Fuel Priming
| 19***38 | Pump Group-Fuel Priming | 1 |
| 19***40 | Pump Group-Fuel Priming | 1 |
317-6706 Pump Gp-Fuel Prm & Prim Filter
| 19***40 | Pump Group-Fuel Priming | 1 |
| 27***04 | Filter Group-Fuel | 1 |
| 27***06 | Filter Element-Fuel; (Filter) | 1 |
205-1664 Pump Gp-Fuel Transfer
| 18***20 | Pump As-Fuel Transfer | 1 |
| 20***64 | Pump Group-Fuel Transfer | 1 |
292-2007 Pump Gp-Fuel Transfer
| 29***07 | Pump Group-Fuel Transfer | 1 |
| 29***70 | Pump As-Fuel Transfer | 1 |
| 6I***46 | Bolt; (M6x1x14-mm) | 2 |
197-8003 Pump Gp-Fuel Transfer
| 15***73 | Bolt | 2 |
| 19***03 | Pump Group-Fuel Transfer | 1 |
| 29***70 | Pump As-Fuel Transfer | 1 |
153-6870 Pump Gp-Fuel Transfer
| 15***70 | Pump Group-Fuel Transfer | 1 |
| 15***72 | Bolt | 3 |
| 15***73 | Bolt | 1 |
313-2009 Pump Gp-Fuel Transfer
| 03***00 | Washer; (0.531x0.718x0.064-In Thk) | 2 |
| 03***49 | Plug | 2 |
| 03***54 | Filter As-Fuel | 1 |
205-1617 Separator Gp-Water
| 18***44 | Seal-O-Ring; (Fuel Filter) | 1 |
| 18***46 | Filter Element-Fuel | 1 |
| 18***47 | Spring | 1 |
Generators
197-8817 Regulator Gp-Voltage -Alternator
| 19***16 | Regulator; (Alternator Voltage) | 1 |
| 19***17 | Regulator Group-Voltage; -Alternator | 1 |
| 23***62 | Connector | 1 |
Lubrication System
313-1975 Filler Gp-Engine Oil
| 15***33 | Seal; (Engine Oil Filler Cap) | 1 |
| 21***58 | Cap-Oil Filler; (Engine) | 1 |
| 28***93 | Seal; (Engine Oil Fill Cap) | 1 |
227-2601 Filler Gp-Engine Oil
| 20***13 | Filler-Oil; (Engine) | 1 |
| 20***15 | Seal-Filler; (Engine Oil) | 1 |
| 22***01 | Filler Group-Engine Oil | 1 |
269-0719 Filler Gp-Engine Oil
| 15***92 | Nut | 4 |
| 15***94 | Gasket | 1 |
| 15***38 | Bolt | 1 |
231-7866 Filler Gp-Engine Oil
| 15***33 | Seal; (Engine Oil Filler Cap) | 1 |
| 15***40 | Bolt | 2 |
| 20***55 | Filler-Oil; (Engine) | 1 |
250-6057 Filter Gp-Engine Oil
| 15***79 | Stud-Hollow | 1 |
| 22***23 | Filter As-Engine Oil | 1 |
| 25***57 | Filter Group-Engine Oil | 1 |
231-8943 Filter Gp-Engine Oil
| 15***79 | Stud-Hollow | 1 |
| 22***23 | Filter As-Engine Oil | 1 |
| 23***09 | Adapter | 1 |
308-2298 Filter Gp-Engine Oil
| 22***23 | Filter As-Engine Oil | 1 |
| 30***98 | Filter Group-Engine Oil | 1 |
269-0685 Filter Gp-Engine Oil
| 15***36 | Washer | 2 |
| 15***79 | Stud-Hollow | 1 |
| 15***81 | Bolt | 1 |
252-9511 Filter Gp-Engine Oil
| 15***79 | Stud-Hollow | 1 |
| 22***23 | Filter As-Engine Oil | 1 |
| 25***11 | Filter Group-Engine Oil | 1 |
292-2003 Gauge Gp-Oil Level (Dipstick) -Engine
| 15***92 | Nut | 4 |
| 15***94 | Gasket | 1 |
| 15***33 | Bolt | 1 |
308-4735 Mounting Gp-Engine Oil Filter
| 15***79 | Stud-Hollow | 1 |
| 30***35 | Mounting Group-Engine Oil Filter | 1 |
269-0688 Pump Gp-Gerotor
| 15***53 | Seal-O-Ring | 1 |
| 15***42 | Valve-Relief; (Engine Oil Pressure) | 1 |
| 26***88 | Pump Group-Gerotor | 1 |
232-0315 Pump Gp-Gerotor
| 15***53 | Seal-O-Ring | 1 |
| 15***42 | Valve-Relief; (Engine Oil Pressure) | 1 |
| 23***15 | Pump Group-Gerotor; -Engine Oil | 1 |
Operator Station
313-2026 Lamp Gp-Indicator
| 19***47 | Lamp; (Glow Plug Indicator) | 1 |
| 31***26 | Lamp Group-Indicator; -Glow Plug | 1 |
197-8546 Lamp Gp-Indicator
| 19***46 | Lamp Group-Indicator; -Glow Plug | 1 |
| 19***47 | Lamp; (Glow Plug Indicator) | 1 |
Service Equipment And Supplies
6l-4502 Chart-Plate & Film
| 24***91 | Plate-Serial Number | 0 |
| 6L***02 | Chart-Plate & Film | 1 |
C1.1 serial number reference
On a C1.1 industrial engine the serial/PIN plate is a metal tag mounted on the engine block, commonly near the valve cover or on the side of the block; on a Cat-branded machine the engine serial is separate from the machine PIN and is read off the engine's own plate. The serial number is a 3-character prefix followed by a numeric sequence; the prefix identifies the specific production/application block (industrial engine, machine-fitted engine, or generator set) rather than a model year, so match the prefix against the engine's serial-range documentation to confirm the exact build and parts fitment.
| Prefix | Identifies | Notes |
|---|---|---|
| C3M | C1.1 Industrial Engine (standalone/OEM power unit) | Early industrial-engine serial block on the C1.1 platform (1.13L three-cylinder diesel), used for OEM and power-unit builds rather than a Cat-branded machine. No published cutover date to the next block. |
| G8M | C1.1 Industrial Engine (standalone/OEM power unit) | Second industrial-engine serial block on the C1.1 platform, same application class as C3M (non-genset, non-machine). No published cutover date. |
| C7Y | C1.1 Industrial Engine, Tier 4 Final build | Later industrial-engine serial block, documented starting at the first unit of the block and running upward. Power output for the C1.1 platform runs roughly 14-21 kW (19-28 hp) depending on rating and market, with rated speed varying by configuration/series (some ratings top out near 2800-3000 rpm, others up to 3400 rpm for lower-emission-tier variants). Meets US EPA Tier 4 Final; EU Stage V compliance is documented for the C1.1 engine family generally. Used on industrial power packs and power units, and as the engine fitted to mini hydraulic excavators, utility compactors, and generator sets. |
| CAA | C1.1 base engine as fitted in a Cat machine (mini excavator engine block) | Prefix tied to the C1.1 on machine-engine cross-reference lists, consistent with the C1.1 being the engine fitted to Cat's mini hydraulic excavator line (e.g. 301.5). Confirm with dealer which specific machine model/PIN range pairs with this engine serial block. |
| TYB | C1.1 Generator Set | Serial block for a C1.1-powered generator set package, as distinct from the bare industrial engine or machine-fitted engine. Not found on an independent prefix chart alongside the other blocks - confirm with dealer before relying on this for parts lookup. |
Frequently asked questions
What engine powers machines badged Caterpillar C1.1?
C1.1 is the engine itself, not a machine model. It's a 1.13 L (69 in³), three-cylinder, liquid-cooled diesel with indirect injection, offered naturally aspirated or turbocharged, descended from Cat's mechanical 3011C block and built to Tier 4 Final/EU Stage V emissions without DPF or SCR aftertreatment.
What does the Caterpillar C1.1 weigh?
Dry engine weight runs roughly 87-108 kg (192-238 lb) depending on cooling package and accessory-drive configuration (varies by configuration). This is engine-only weight; add fluids, mounting hardware, and any driven equipment for installed weight in a specific machine.
What replaced the Caterpillar C1.1?
Nothing yet - the C1.1 remains Caterpillar's current production engine in this displacement class. It itself succeeded the mechanical 3011C as emissions requirements phased in through Stage IIIA and Tier 4, and since it already meets Tier 4 Final/Stage V, no newer generation has been announced.
What C1.1 owners discuss
What engine is actually inside the Cat C1.1, and is it a pure in-house Caterpillar design?
The C1.1 is a 1.13 L (69 cu in), three-cylinder, naturally aspirated diesel with indirect injection, built through Caterpillar's manufacturing partnership tracing to Shibaura (the same lineage as the Perkins-Shibaura joint-venture engines). Bore/stroke is 77 mm x 81 mm (3.03 in x 3.19 in), compression ratio 23:1. Because the core block and injection layout share that heritage, mechanics familiar with comparable small Shibaura-based diesels use similar diagnostic logic on the C1.1. A turbocharged C1.1T variant also exists, rated higher (roughly 16.1-21 kW / 21.6-28.2 hp) with more torque (about 86 N.m vs 59 N.m on the naturally aspirated version). Confirm which variant and rating you actually have before comparing output figures or ordering parts, since ratings vary by configuration and emissions market.
Does the C1.1 need a DPF, EGR, or SCR system like the larger Cat diesels?
No. At this displacement and power class the C1.1 meets U.S. EPA Tier 4 Final and EU Stage V without exhaust aftertreatment, EGR, or full electronic engine control - it is a mechanically governed, indirect-injection engine, with an electronic fuel shutoff solenoid being about the extent of its electronics. Owners moving down from larger Cat machines often flag this as a relief: no soot loading, no forced regeneration cycles, no NOx sensor faults to chase. The tradeoff is a mechanical injection pump and glow-plug cold-start aid instead of common-rail electronics, so diagnosis leans more on mechanical checks (compression, injection timing, glow plug circuit) than on scan-tool fault codes.
What's a real-world failure pattern owners have actually run into on this engine?
One documented case: an engine that overheated, lost oil pressure toward zero as it got hot, and pulled water into the diesel filter within about 15 minutes of running. Forum consensus converged on a blown head gasket letting coolant cross into both the oil and the fuel (via the return path near the injection pump), rather than three unrelated faults. Field test: pull the thermostat, top coolant to the thermostat housing with the elbow off, and watch for bubbles - bubbling points to combustion gas leaking into the cooling jacket. Oily residue on the inside of the radiator cap is another tell. Once this pattern shows (overheat plus falling oil pressure plus water in fuel), stop running the engine - continued operation risks bearing or cylinder damage. Have your dealer verify head and block condition before any repair is undertaken.
What cold-start complaints come up most often for the C1.1?
Extended cranking - multiple attempts or several minutes before it catches - in cold weather is the recurring complaint. Owners trace it to weak or dead glow plugs, a sticking glow-plug relay, a blown glow-plug fuse, or corroded harness connections more often than to the fuel system itself. Practical isolation: pull the glow plugs and bench-test them for glow/resistance, then check relay operation and fuse continuity, before assuming the injection pump is at fault. A no-glow condition can mask itself once the engine is fully warm, so testing has to happen cold to catch it.
What hydraulic or electrical faults get blamed on the engine or pump but usually aren't?
On C1.1-powered mini excavators, sudden loss of hydraulic function while the engine keeps running fine is commonly a wiring or fuse issue rather than a pump or engine fault. Reported causes include an armrest lockout switch/solenoid fault and a chafed harness (travel-alarm wiring rubbing through and shorting against the frame, blowing the hydraulic circuit fuse). Reseating connectors, checking the lockout solenoid, and inspecting harness routing near pivot points is the practical first step before condemning a hydraulic pump.
What wear pattern should owners expect on the undercarriage of C1.1-powered compact machines?
For the sub-2-to-3-ton mini excavators and compact equipment this engine typically powers, rubber tracks generally run about 1,500-2,500 hours before replacement, with pace depending heavily on ground conditions - abrasive or rocky ground wears tracks noticeably faster than dirt or turf. Track sag should sit around 25 mm (1 in), +/- 6 mm (1/4 in); running tracks too tight accelerates wear substantially, while too loose invites de-tracking, especially after working in mud or snow that stretches them. Sprockets wear alongside tracks and are typically replaced together - fitting new tracks onto a worn sprocket just accelerates wear on the new track. Exact figures vary by machine weight class and duty cycle.
What should I check before buying used C1.1-powered equipment?
Cold-start it first - a warm engine can mask a weak glow-plug circuit or marginal compression. Watch exhaust color on startup: persistent blue smoke points to oil burning (rings or valve seals), black points to a fuel or filter issue, and white smoke beyond a brief cold-start puff can mean coolant reaching the cylinders (head gasket). Pull the radiator cap and check for oily residue or a milky film, and check the oil dipstick for a milky/mayonnaise appearance - both suggest coolant crossing into the oil or vice versa, matching a known failure pattern on this engine. Confirm the injection pump primes and holds without repeated bleeding, verify all glow plugs cycle on startup, and cross-check the hour meter against visible wear (paint condition, pedal and lever wear, undercarriage and track condition) for consistency. Have your dealer verify compression and coolant system integrity before finalizing a purchase - a head gasket issue caught early is a repair, caught late it can mean an overhaul.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
Serial-range & configuration variants
This page covers the Caterpillar C1.1. Related factory variants of the same model family:
C1.1
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