Caterpillarmini hydraulic excavator(no series)
Caterpillar 305.5D
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar 305.5D CR is a compact radius mini hydraulic excavator designed for high performance in confined work areas. Produced starting in 2010, this machine features a Mitsubishi S4Q2-T engine delivering 47 hp (35 kW) net power. The series is characterized by its ability to keep the upper body within 140 mm (5 and 1/2 in) of the undercarriage during swing. Depending on configuration, operating weights range from approximately 5,305 kg (11,696 lb) for standard setups up to 5,465 kg (12,048 lb) with an enclosed cab.
The D-Series introduced significant improvements in stability and hydraulic efficiency over previous generations. The implementation of load-sensing hydraulics with a variable displacement pump optimizes flow for smoother performance and better fuel economy. In today's used equipment market, the 305.5D remains a high-value asset due to its versatile attachment capabilities, such as the hydraulic pin-grabber quick coupler and 200-degree bucket rotation. Its robust design and ease of serviceability make it a primary choice for parts availability and secondary market reliability.
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 305.5D specifications
Engine
| Model | Cat C2.4 |
| Net Power | 44.2 hp (32 kW) |
| Gross Power | 45.7 hp |
| Displacement | 146 cu in |
| Bore | 3.4 in |
| Stroke | 4 in |
| Emissions Tier | U.S. EPA Tier 4 Interim / EU Stage IIIA |
Weights
| Operating Weight | 11,958 lb (5,424 kg) |
| Operating Weight - With Canopy | 11,596 lb |
| Ground Pressure | 4.7 psi |
Dimensions
| Transport Length | 5.33 m |
| Transport Width | 1.5 m |
| Transport Height | 2.55 m |
| Bucket Width | 1.98 m |
| Blade Width | 6.5 ft |
Performance
| Maximum Dig Depth | 3.86 m (152 in) |
| Blade Lift Height | 15.9 in |
| Blade Dig Depth | 21.9 in |
| Swing Speed | 10 rpm |
| Travel Speed - High | 2.8 mph |
| Travel Speed - Low | 1.7 mph |
| Maximum Traction Force - High Speed | 6,025 lb |
| Maximum Traction Force - Low Speed | 10,745 lb |
Forces
| Bucket Digging Force | 11,443 lb |
| Stick Digging Force - Standard | 6,497 lb |
| Stick Digging Force - Long | 5,575 lb |
Service capacities (summary)
| Fuel Tank | 16.6 gal |
| Hydraulic Tank | 18 gal |
| Hydraulic System Capacity | 20.6 gal |
| Engine Oil | 2.5 gal |
| Cooling System | 2.8 gal |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
305.5D fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) | 8.2 l (2.2 gal US) | Cat DEO; 500 hour change interval per factory spec sheet |
| Cooling system | 10.7 l (2.8 gal US) | Cat ELC (or SP 17 alternative) |
| Fuel tank | 70 l (18.5 gal US) | Diesel fuel |
| Hydraulic system total | 78 l (20.6 gal US) | Cat HYDO; alternatives include Cat Diesel Engine Oil or Cat TDTO (TMS) |
| Hydraulic tank | 48 l (12.7 gal US) | Cat HYDO |
| Grease | Per maintenance schedule for grease nipples |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar 305.5D maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
Servicing the 305.5D beyond the schedule
Predictive Maintenance & Fluid Analysis
Utilize Cat S.O.S oil sampling to monitor the health of the Mitsubishi S4Q2-T engine and hydraulic system. Regularly analyze engine oil for wear metals like iron or copper, and check hydraulic fluid for particle counts and oxidation. Monitoring coolant pH and SCA levels prevents internal liner pitting. Early detection through fluid analysis identifies contamination before it causes catastrophic pump or engine failure.
Corrective & Common Repairs
Monitor hydraulic return filters and fuel water separators to prevent system contamination. Common repairs often involve addressing worn pins, bushings, or hydraulic hose abrasions. If the machine experiences loss of digging force, inspect the load-sensing hydraulic pump and valve settings. Ensure the engine kill switch and safety lockout bar function correctly to maintain operational integrity during component replacement.
Overhaul & Rebuild Points
Major service milestones include a 2,000-hour hydraulic oil change and coolant flush to prevent system degradation. During structural inspections, evaluate boom and stick welds for fatigue. Monitor the final drive and swing drive for wear; these components require oil changes or gear inspections during deep rebuild. Evaluate the condition of the Mitsubishi engine's turbocharger and fuel injectors during high-hour overhauls.
Seasonal & Environment Servicing
In dusty or quarry environments, check air filter restriction daily and clean radiator/oil cooler fins frequently to prevent overheating. For machines operating in cold climates, ensure the engine glow plugs and battery condition are optimal. In high-use summer conditions, shorten intervals for checking hydraulic hose cracks and track tension to manage increased thermal expansion and abrasive wear from debris.
305.5D fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| 110-0 | Engine Coolant Temperature — Above Normal | Low coolant level or thermostat failure | Inspect cooling system and refill coolant |
| 110-3 | Engine Coolant Temp Sensor — Voltage High | Open circuit or sensor failure | Check wiring and replace sensor if faulty |
| 174-3 | Engine Fuel Temperature — Voltage Above Normal | Open circuit in sensor wiring | Inspect harness and replace sensor if necessary |
| 190-8 | Engine Speed — Abnormal Frequency | Speed sensor air gap, sensor failure, or tone ring damage | Check sensor gap and test speed sensor/tone ring |
| 41-3 | 8-Volt DC Supply — Voltage Above Normal | Short to power on 8V reference circuit | Inspect sensors sharing the 8V supply and isolate fault |
| 41-4 | 8-Volt DC Supply — Voltage Below Normal | Short to ground on 8V reference circuit | Disconnect sensors one at a time to locate short |
| 2348-9 | SAE J1939 Data Link #2 — Abnormal Update Rate | CAN bus wiring damage or termination fault | Check CAN wiring and measure termination resistance |
| E360 | Engine Coolant Temperature — High | Low coolant, failed thermostat, or water pump issue | Diagnose cooling system; do not operate until resolved |
| E361 | Engine Coolant Temperature — Very High (Shutdown) | Severe cooling system failure | Perform full cooling system diagnosis; engine shutdown required |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
305.5D attachments & work tools
Buckets
Available in various configurations including ditching buckets and custom excavator buckets. A 24 inch (610 mm) bucket is noted for certain 305.5D CR configurations.
Hydraulic hammers
Compatible with hydraulic hammer attachments. The machine features a closed, load-sensing hydraulic system to support such tools.
Quick couplers
D-Series machines utilize a design with a choice of mechanical pin-grabber or a new hydraulic pin-grabber quick coupler option. Hydraulic quick coupler lines are available from the factory as an option.
Thumbs/grapples
Supports utility thumbs with hydraulic functionality and maximum interchangeability. Options include hydraulic thumbs and progressive link thumbs.
Rippers
Compatible with multi-ripper tooth attachments for breaking through rocky landscapes.
Hydraulic-kit notes
Equipped with a closed, load-sensing hydraulic system. Features include 1-way and 2-way (combined function) auxiliary hydraulic lines and automatic two-speed auxiliary line capability.
All 305.5D assemblies by section
Every catalogued assembly group for the Caterpillar 305.5D. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
353-2163 Air Cleaner Gp
| 35***63 | Air Cleaner Group | 1 |
267-1086 Air Cleaner Gp
| 26***86 | Air Cleaner Group | 1 |
344-3236 Extension Gp-Exhaust
| 34***36 | Extension Group-Exhaust | 1 |
280-3732 Lines Gp-Air
| 28***32 | Lines Group-Air | 1 |
267-1040 Lines Gp-Air
| 26***40 | Lines Group-Air | 1 |
320-2234 Manifold Gp-Exhaust
| 32***34 | Manifold Group-Exhaust | 1 |
280-3731 Manifold Gp-Inlet
| 28***31 | Manifold Group-Inlet | 1 |
267-1032 Muffler Gp
| 26***32 | Muffler Group | 1 |
280-3733 Turbocharger Gp
| 28***33 | Turbocharger Group | 1 |
Basic Engine
270-1845 Camshaft Gp
| 27***45 | Camshaft Group | 1 |
320-2232 Cover Gp-Valve Mechanism
| 32***32 | Cover Group-Valve Mechanism | 1 |
270-1844 Crankshaft Gp
| 27***44 | Crankshaft Group | 1 |
319-2756 Cylinder Block As
| 31***56 | Cylinder Block As | 1 |
280-3720 Cylinder Block Gp
| 28***20 | Cylinder Block Group | 1 |
270-6188 Cylinder Head As
| 27***88 | Cylinder Head As | 1 |
280-3722 Cylinder Head Gp
| 28***22 | Cylinder Head Group | 1 |
280-8530 Drain Gp-Ecology -Engine, Hydraulic Tank
| 28***30 | Drain Group-Ecology; -Engine, Hydraulic Tank | 1 |
276-0119 Drain Gp-Engine Oil -Ecology
| 27***19 | Drain Group-Engine Oil; -Ecology | 1 |
280-3726 Flywheel Gp
| 28***26 | Flywheel Group | 1 |
280-3725 Gear Gp-Front
| 28***25 | Gear Group-Front | 1 |
280-3724 Housing Gp-Front
| 28***24 | Housing Group-Front | 1 |
303-4577 Mounting Gp-Engine
| 30***77 | Mounting Group-Engine | 1 |
303-4578 Mounting Gp-Engine
| 30***78 | Mounting Group-Engine, Filter Head Adapter | 1 |
276-2215 Mounting Gp-Starting Motor
| 27***15 | Mounting Group-Starting Motor | 1 |
280-3727 Pan Gp-Oil
| 28***27 | Pan Group-Oil | 1 |
270-1843 Piston & Rod Gp
| 27***43 | Piston & Rod Group | 1 |
270-1851 Pulley Gp-Crankshaft
| 27***51 | Pulley Group-Crankshaft | 1 |
270-1848 Valve Mechanism Gp
| 27***48 | Valve Mechanism Group | 1 |
Cooling System
270-3837 Cooler Gp-Engine Oil
| 27***37 | Cooler Group-Engine Oil | 1 |
280-3738 Fan Gp-Suction
| 28***38 | Fan Group-Suction | 1 |
285-8842 Fan Gp-Suction
| 28***42 | Fan Group-Suction | 1 |
270-6252 Pump Gp-Water
| 27***52 | Pump Group-Water | 1 |
280-3730 Pump Gp-Water
| 28***30 | Pump Group-Water | 1 |
352-0064 Radiator & Hyd Oil Cooler Gp
| 35***64 | Radiator & Hydraulic Oil Cooler Group | 1 |
Electrical And Starting System
345-1454 Alarm Ar-Travel
| 34***54 | Alarm Ar-Travel | 1 |
347-2114 Alarm Gp-Travel
| 34***14 | Alarm Group-Travel | 1 |
280-3737 Alternator Gp-Charging
| 28***37 | Alternator Group-Charging | 1 |
343-9158 Battery & Wiring Gp -Cab
| 34***58 | Battery & Wiring Group; -Cab | 1 |
343-9155 Battery & Wiring Gp -Canopy
| 34***55 | Battery & Wiring Group; -Canopy | 1 |
270-1866 Glow Plug Gp
| 27***66 | Glow Plug Group | 1 |
300-2799 Heater Gp-Jacket Water
| 30***99 | Heater Group-Jacket Water | 1 |
233-0099 Lamp Gp-Flood -Boom
| 23***99 | Lamp Group-Flood; -Boom | 1 |
352-0006 Lighting Ar-Flood -Boom
| 35***06 | Lighting Ar-Flood; -Boom | 1 |
292-5739 Lighting Gp-Flood -Boom
| 29***39 | Lighting Group-Flood; -Boom | 1 |
344-3208 Lighting Gp-Flood -Canopy
| 34***08 | Lighting Group-Flood; -Canopy | 1 |
266-6843 Lighting Gp-Flood -Cab
| 26***43 | Lighting Group-Flood; -Cab | 1 |
280-3736 Starting Motor Gp-Electric
| 28***36 | Starting Motor Group-Electric | 1 |
267-4942 Wiring Gp-Console -Rh
| 26***42 | Wiring Group-Console; -Rh | 1 |
345-1609 Wiring Gp-Console -Canopy
| 34***09 | Wiring Group-Console; -Canopy | 1 |
352-0004 Wiring Gp-Console -Cab
| 35***04 | Wiring Group-Console; -Cab | 1 |
273-7082 Wiring Gp-Engine -Refrigerant Compressor
| 27***82 | Wiring Group-Engine; -Refrigerant Compressor | 1 |
353-1825 Wiring Gp-Front -Power Angle
| 35***25 | Wiring Group-Front; -Power Angle | 1 |
352-0005 Wiring Gp-Front
| 35***05 | Wiring Group-Front | 1 |
345-1564 Wiring Gp-Lighting -Warning Beacon, Power Recep
| 34***64 | Wiring Group-Lighting; -Warning Beacon, Power Recep | 1 |
Engine Arrangement
311-8448 Engine Ar-Primary
| 31***48 | Engine Ar-Primary | 1 |
344-3240 Installation Ar-Engine
| 34***40 | Installation Ar-Engine | 1 |
Frame And Body
293-7215 C-Frame Gp-Power Angling
| 29***15 | C-Frame Group-Power Angling | 1 |
341-0374 Counterweight Gp
| 34***74 | Counterweight Group | 1 |
341-0416 Cover As -Fuel Tank, Lh
| 34***16 | Cover As; -Fuel Tank, Lh | 1 |
341-0417 Cover As -Fuel Tank
| 34***17 | Cover As; -Fuel Tank | 1 |
341-0414 Cover Gp-Access -Rh
| 34***14 | Cover Group-Access; -Rh | 1 |
341-0542 Cover Gp-Access -Rh
| 34***42 | Cover Group-Access; -Rh | 1 |
341-0357 Cover Gp-Fender
| 34***57 | Cover Group-Fender | 1 |
341-0419 Cover Gp-Hood
351-8525 Fender Gp -Lh
341-0366 Firewall Gp
266-3874 Frame Gp-Swing -Boom
343-6448 Frame Gp-Upper
| 34***48 | Frame Group-Upper | 1 |
352-6599 Guard Gp-Bottom
| 35***99 | Guard Group-Bottom | 1 |
343-7339 Guard Gp-Bottom
| 34***39 | Guard Group-Bottom | 1 |
266-3873 Guard Gp-Cylinder -Boom
| 26***73 | Guard Group-Cylinder; -Boom | 1 |
270-4072 Guard Gp-Cylinder
| 27***72 | Guard Group-Cylinder; -Power Angle | 1 |
360-7739 Hood & Guard Gp
| 36***39 | Hood & Guard Group | 1 |
341-0411 Hood As -Engine
| 34***11 | Hood As; -Engine | 1 |
341-0410 Hood Gp -Engine
| 34***10 | Hood Group; -Engine | 1 |
265-8778 Lines Gp-Grease
| 26***78 | Lines Group-Grease | 1 |
344-0742 Plate As -Firewall
| 34***42 | Plate As; -Firewall | 1 |
281-0894 Stop Gp-Swing -Boom
| 28***94 | Stop Group-Swing; -Boom | 1 |
352-0714 Suppression Ar-Sound -European Market
| 35***14 | Suppression Ar-Sound; -European Market | 1 |
352-0715 Suppression Ar-Sound -Standard
| 35***15 | Suppression Ar-Sound; -Standard | 1 |
352-0716 Suppression Ar-Sound -High Ambient
| 35***16 | Suppression Ar-Sound; -High Ambient | 1 |
Fuel System
345-1455 Control Ar-Governor -Automatic Idle
| 34***55 | Control Ar-Governor; -Automatic Idle | 1 |
347-2110 Control Gp-Governor -Automatic Idle
| 34***10 | Control Group-Governor; -Automatic Idle | 1 |
347-2115 Control Gp-Governor -Automatic Idle
| 34***15 | Control Group-Governor; -Automatic Idle | 1 |
352-1710 Lines Gp-Fuel Filter
| 35***10 | Lines Group-Fuel Filter | 1 |
280-3735 Lines Gp-Fuel Injection
| 28***35 | Lines Group-Fuel Injection | 1 |
280-3734 Pump Gp-Fuel Injection
| 28***34 | Pump Group-Fuel Injection | 1 |
312-1699 Separator Gp-Water
| 31***99 | Separator Group-Water | 1 |
265-8340 Tank & Mtg Gp-Fuel
| 26***40 | Tank & Mtg Group-Fuel | 1 |
Hydraulic System
335-0517 Accumulator Gp-Hydraulic -Charged
| 33***17 | Accumulator Group-Hydraulic; -Charged | 1 |
279-4711 Barrel Gp-Pump
| 27***11 | Barrel Group-Pump | 1 |
344-1531 Control Ar-Auxiliary
| 34***31 | Control Ar-Auxiliary | 1 |
344-1532 Control Ar-Auxiliary -Standard Stick
| 34***32 | Control Ar-Auxiliary; -Standard Stick | 1 |
344-1533 Control Ar-Auxiliary -Long Stick
| 34***33 | Control Ar-Auxiliary; -Long Stick | 1 |
267-3271 Control Ar-Auxiliary -Swing Boom
| 26***71 | Control Ar-Auxiliary; -Swing Boom | 1 |
344-0888 Control Ar-Auxiliary -2-Way
| 34***88 | Control Ar-Auxiliary; -2-Way | 1 |
352-1247 Control Ar-Pilot Hydraulic -Standard
| 35***47 | Control Ar-Pilot Hydraulic; -Standard | 1 |
344-0887 Control Ar-Pilot Hydraulic -Standard
| 34***87 | Control Ar-Pilot Hydraulic; -Standard | 1 |
270-4714 Cylinder Gp-Blade -Angle
| 27***14 | Cylinder Group-Blade; -Angle | 1 |
293-7158 Cylinder Gp-Blade -Raise, Lower
| 29***58 | Cylinder Group-Blade; -Raise, Lower | 1 |
282-1535 Cylinder Gp-Boom
| 28***35 | Cylinder Group-Boom | 1 |
344-2045 Cylinder Gp-Bucket
| 34***45 | Cylinder Group-Bucket | 1 |
266-6967 Cylinder Gp-Bucket
| 26***67 | Cylinder Group-Bucket | 1 |
282-1537 Cylinder Gp-Stick
| 28***37 | Cylinder Group-Stick | 1 |
266-6975 Cylinder Gp-Swing Boom
| 26***75 | Cylinder Group-Swing Boom | 1 |
274-6503 Drain Gp-Oil -Ecology, Hydraulic Tank
| 27***03 | Drain Group-Oil; -Ecology, Hydraulic Tank | 1 |
280-8529 Drain Gp-Oil -Hydraulic Tank
| 28***29 | Drain Group-Oil; -Hydraulic Tank | 1 |
274-6502 Drain Gp-Oil -Hydraulic Tank
| 27***02 | Drain Group-Oil; -Hydraulic Tank | 1 |
282-1534 Drive Gp-Swing
| 28***34 | Drive Group-Swing | 1 |
353-2204 Fastener Gp-Lines -Boom
| 35***04 | Fastener Group-Lines; -Boom | 1 |
353-2203 Fastener Gp-Lines -Boom
| 35***03 | Fastener Group-Lines; -Boom | 1 |
227-0620 Gauge Gp-Sight -Hydraulic Oil Level
| 22***20 | Gauge Group-Sight; -Hydraulic Oil Level | 1 |
344-0182 Hydraulic Ar
| 34***82 | Hydraulic Ar | 1 |
310-6192 Lines Ar-Boom -Check Valve
| 31***92 | Lines Ar-Boom; -Check Valve | 1 |
266-8149 Lines Ar-Boom
| 26***49 | Lines Ar-Boom | 1 |
266-8152 Lines Gp-Auxiliary Hydraulic -Boom
| 26***52 | Lines Group-Auxiliary Hydraulic; -Boom | 1 |
267-3278 Lines Gp-Auxiliary Hydraulic -Boom
| 26***78 | Lines Group-Auxiliary Hydraulic; -Boom | 1 |
344-0637 Lines Gp-Auxiliary Hydraulic -Long Stick
| 34***37 | Lines Group-Auxiliary Hydraulic; -Long Stick | 1 |
292-3348 Lines Gp-Auxiliary Hydraulic
| 29***48 | Lines Group-Auxiliary Hydraulic | 1 |
344-0636 Lines Gp-Auxiliary Hydraulic -Standard Stick
| 34***36 | Lines Group-Auxiliary Hydraulic; -Standard Stick | 1 |
292-3349 Lines Gp-Auxiliary Hydraulic -Long Stick
| 29***49 | Lines Group-Auxiliary Hydraulic; -Long Stick | 1 |
292-3331 Lines Gp-Blade -Raise, Lower
| 29***31 | Lines Group-Blade; -Raise, Lower | 1 |
280-7604 Lines Gp-Blade -Angle Blade
| 28***04 | Lines Group-Blade; -Angle Blade | 1 |
310-6193 Lines Gp-Boom Check Valve
| 31***93 | Lines Group-Boom Check Valve | 1 |
358-5308 Lines Gp-Bucket -Long Stick
| 35***08 | Lines Group-Bucket; -Long Stick | 1 |
358-5307 Lines Gp-Bucket
| 35***07 | Lines Group-Bucket | 1 |
345-2520 Lines Gp-Bucket -2nd Auxiliary, Long Stick
| 34***20 | Lines Group-Bucket; -2nd Auxiliary, Long Stick | 1 |
345-2519 Lines Gp-Bucket -2nd Auxiliary, Standard Stick
| 34***19 | Lines Group-Bucket; -2nd Auxiliary, Standard Stick | 1 |
292-3324 Lines Gp-Front -Bucket, Stick Cylinder
| 29***24 | Lines Group-Front; -Bucket, Stick Cylinder | 1 |
266-8153 Lines Gp-Front
| 26***53 | Lines Group-Front; -Auxiliary | 1 |
292-3325 Lines Gp-Front -Boom Cylinder
| 29***25 | Lines Group-Front; -Boom Cylinder | 1 |
344-0183 Lines Gp-Hydraulic Pump -Main
| 34***83 | Lines Group-Hydraulic Pump; -Main | 1 |
267-3282 Lines Gp-Pilot -Joystick, 2-Way
| 26***82 | Lines Group-Pilot; -Joystick, 2-Way | 1 |
266-8135 Lines Gp-Pilot -Joystick
| 26***35 | Lines Group-Pilot; -Joystick | 1 |
278-0826 Lines Gp-Pilot -Auxiliary, Travel
| 27***26 | Lines Group-Pilot; -Auxiliary, Travel | 1 |
352-7770 Lines Gp-Pilot -Automatic Idle
| 35***70 | Lines Group-Pilot; -Automatic Idle | 1 |
280-7606 Lines Gp-Pilot -Blade
| 28***06 | Lines Group-Pilot; -Blade | 1 |
344-0891 Lines Gp-Pilot -Main Control Valve
| 34***91 | Lines Group-Pilot; -Main Control Valve | 1 |
344-0892 Lines Gp-Pilot -2-Way
| 34***92 | Lines Group-Pilot; -2-Way | 1 |
344-2519 Lines Gp-Pilot
| 34***19 | Lines Group-Pilot | 1 |
346-2830 Lines Gp-Return
| 34***30 | Lines Group-Return | 1 |
351-8540 Lines Gp-Return -Blade
| 35***40 | Lines Group-Return; -Blade | 1 |
292-3327 Lines Gp-Stick
| 29***27 | Lines Group-Stick | 1 |
292-3326 Lines Gp-Swing Cylinder -Boom
| 29***26 | Lines Group-Swing Cylinder; -Boom | 1 |
292-3347 Lines Gp-Swing Cylinder -2nd Auxiliary
| 29***47 | Lines Group-Swing Cylinder; -2nd Auxiliary | 1 |
292-3332 Lines Gp-Swing Motor
| 29***32 | Lines Group-Swing Motor | 1 |
280-7605 Lines Gp-Swing Motor
| 28***05 | Lines Group-Swing Motor | 1 |
292-3333 Lines Gp-Travel Motor
| 29***33 | Lines Group-Travel Motor | 1 |
280-7619 Lines Gp-Travel Motor
| 28***19 | Lines Group-Travel Motor | 1 |
274-4199 Manifold Gp-Control
| 27***99 | Manifold Group-Control; -Hydraulic Lockout, Speed Select | 1 |
265-8748 Motor & Mtg Gp-Swing
| 26***48 | Motor & Mtg Group-Swing | 1 |
266-6828 Pump & Mtg Gp-Main Hydraulic
| 26***28 | Pump & Mtg Group-Main Hydraulic | 1 |
279-4699 Pump Gp-Gear -Pilot
| 27***99 | Pump Group-Gear; -Pilot | 1 |
266-6827 Pump Gp-Main Hydraulic
| 26***27 | Pump Group-Main Hydraulic | 1 |
279-4710 Swashplate Gp
| 27***10 | Swashplate Group | 1 |
268-3054 Swivel Gp
| 26***54 | Swivel Group | 1 |
266-6836 Swivel Gp
| 26***36 | Swivel Group | 1 |
341-0390 Tank & Filter Gp-Hydraulic
| 34***90 | Tank & Filter Group-Hydraulic | 1 |
341-0353 Tank & Mtg Gp-Hydraulic
| 34***53 | Tank & Mtg Group-Hydraulic | 1 |
360-4637 Valve & Mtg Gp-Bank
| 36***37 | Valve & Mtg Group-Bank | 1 |
360-4638 Valve & Mtg Gp-Bank
| 36***38 | Valve & Mtg Group-Bank | 1 |
346-2909 Valve & Mtg Gp-Control -2-Way
| 34***09 | Valve & Mtg Group-Control; -2-Way | 1 |
352-0085 Valve & Mtg Gp-Control -Auxiliary, Boom Swing
| 35***85 | Valve & Mtg Group-Control; -Auxiliary, Boom Swing | 1 |
352-0084 Valve & Mtg Gp-Pilot -Boom Swing
| 35***84 | Valve & Mtg Group-Pilot; -Boom Swing | 1 |
282-9837 Valve & Mtg Gp-Pilot -Travel
| 28***37 | Valve & Mtg Group-Pilot; -Travel | 1 |
272-0475 Valve & Mtg Gp-Pilot -Travel
| 27***75 | Valve & Mtg Group-Pilot; -Travel | 1 |
360-5403 Valve Gp-Control -Inlet
| 36***03 | Valve Group-Control; -Inlet | 1 |
361-7355 Valve Gp-Control -Stick
| 36***55 | Valve Group-Control; -Stick | 1 |
325-0758 Valve Gp-Control -Angle Blade
| 32***58 | Valve Group-Control; -Angle Blade | 1 |
361-7354 Valve Gp-Control -Boom
| 36***54 | Valve Group-Control; -Boom | 1 |
272-7823 Valve Gp-Control -Blade
| 27***23 | Valve Group-Control; -Blade | 1 |
334-7924 Valve Gp-Control -Boom Swing
| 33***24 | Valve Group-Control; -Boom Swing | 1 |
334-7923 Valve Gp-Control -Boom Swing
| 33***23 | Valve Group-Control; -Boom Swing | 1 |
334-7922 Valve Gp-Control -Swing
| 33***22 | Valve Group-Control; -Swing | 1 |
272-7825 Valve Gp-Control -Work Tool
| 27***25 | Valve Group-Control; -Work Tool | 1 |
361-7352 Valve Gp-Control -Travel, Lh
| 36***52 | Valve Group-Control; -Travel, Lh | 1 |
361-7353 Valve Gp-Control -Travel Right
| 36***53 | Valve Group-Control; -Travel Right | 1 |
272-7831 Valve Gp-Control -Outlet
| 27***31 | Valve Group-Control; -Outlet | 1 |
272-7826 Valve Gp-Control -Bucket
| 27***26 | Valve Group-Control; -Bucket | 1 |
274-4203 Valve Gp-Diverter -Swing Boom, Work Tool
| 27***03 | Valve Group-Diverter; -Swing Boom, Work Tool | 1 |
360-7745 Valve Gp-Main Control -Angle Blade
| 36***45 | Valve Group-Main Control; -Angle Blade | 1 |
360-7744 Valve Gp-Main Control -Standard
| 36***44 | Valve Group-Main Control; -Standard | 1 |
330-4619 Valve Gp-Pilot -Travel
| 33***19 | Valve Group-Pilot; -Travel | 1 |
267-0424 Valve Gp-Pilot -Auxiliary, Boom Swing
| 26***24 | Valve Group-Pilot; -Auxiliary, Boom Swing | 1 |
320-6540 Valve Gp-Pilot -Blade Control
| 32***40 | Valve Group-Pilot; -Blade Control | 1 |
330-4618 Valve Gp-Pilot -Travel
| 33***18 | Valve Group-Pilot; -Travel | 1 |
267-0420 Valve Gp-Pilot -Joystick
| 26***20 | Valve Group-Pilot; -Joystick | 1 |
191-1392 Valve Gp-Pilot
| 19***92 | Valve Group-Pilot; -Blade Control | 1 |
279-4712 Valve Gp-Pump Control
| 27***12 | Valve Group-Pump Control | 1 |
288-0846 Valve Gp-Relief -Thumb
| 28***46 | Valve Group-Relief; -Thumb | 1 |
268-3578 Valve Gp-Selector -2-Way
| 26***78 | Valve Group-Selector; -2-Way | 1 |
169-1181 Valve Gp-Solenoid
| 16***81 | Valve Group-Solenoid; -Blade | 1 |
269-2299 Valve Gp-Solenoid
| 26***99 | Valve Group-Solenoid; -Auxiliary, Boom Swing | 1 |
282-9318 Valve Gp-Solenoid
| 28***18 | Valve Group-Solenoid; -Blade | 1 |
Implements
343-5216 Boom Ar
| 34***16 | Boom Ar | 1 |
361-1497 Boom Gp
| 36***97 | Boom Group | 1 |
270-6581 Linkage Ar-Bucket -With Lifting Eye
| 27***81 | Linkage Ar-Bucket; -With Lifting Eye | 1 |
343-5217 Linkage Ar-Bucket -Standard
| 34***17 | Linkage Ar-Bucket; -Standard | 1 |
277-4348 Linkage Ar-Bucket -With Lifting Eye
| 27***48 | Linkage Ar-Bucket; -With Lifting Eye | 1 |
343-5218 Linkage Ar-Bucket -With Lifting Eye
| 34***18 | Linkage Ar-Bucket; -With Lifting Eye | 1 |
266-3931 Linkage Ar-Bucket -Standard
| 26***31 | Linkage Ar-Bucket; -Standard | 1 |
278-9934 Linkage Gp-Bucket -With Lifting Eye
| 27***34 | Linkage Group-Bucket; -With Lifting Eye | 1 |
277-4380 Linkage Gp-Bucket
| 27***80 | Linkage Group-Bucket | 1 |
361-1484 Stick Ar -Long, Heavy-Duty
| 36***84 | Stick Ar; -Long, Heavy-Duty | 1 |
360-0562 Stick Ar -2nd Auxiliary, Standard
| 36***62 | Stick Ar; -2nd Auxiliary, Standard | 1 |
360-0561 Stick Ar -Long
| 36***61 | Stick Ar; -Long | 1 |
344-2562 Stick Ar
| 34***62 | Stick Ar | 1 |
360-0563 Stick Ar -2nd Auxiliary, Long
| 36***63 | Stick Ar; -2nd Auxiliary, Long | 1 |
360-0560 Stick Ar -Standard
| 36***60 | Stick Ar; -Standard | 1 |
264-8436 Stick Ar-Hoe -Standard
| 26***36 | Stick Ar-Hoe; -Standard | 1 |
293-6213 Stick Ar-Hoe -Standard, Thumb
| 29***13 | Stick Ar-Hoe; -Standard, Thumb | 1 |
270-6503 Stick Ar-Hoe -Long, Heavy Duty
| 27***03 | Stick Ar-Hoe; -Long, Heavy Duty | 1 |
293-6214 Stick Ar-Hoe -Long, Thumb
| 29***14 | Stick Ar-Hoe; -Long, Thumb | 1 |
361-1479 Stick Ar-Hoe -Standard
| 36***79 | Stick Ar-Hoe; -Standard | 1 |
360-6593 Stick Ar-Hoe -Standard, Thumb
| 36***93 | Stick Ar-Hoe; -Standard, Thumb | 1 |
360-6594 Stick Ar-Hoe -Long, Thumb
| 36***94 | Stick Ar-Hoe; -Long, Thumb | 1 |
361-1493 Stick Gp-Hoe -Long, Thumb
| 36***93 | Stick Group-Hoe; -Long, Thumb | 1 |
361-1489 Stick Gp-Hoe -Standard, Thumb
| 36***89 | Stick Group-Hoe; -Standard, Thumb | 1 |
266-3919 Stick Gp-Hoe -Standard
| 26***19 | Stick Group-Hoe; -Standard | 1 |
270-6579 Stick Gp-Hoe -Standard, Thumb
| 27***79 | Stick Group-Hoe; -Standard, Thumb | 1 |
361-1480 Stick Gp-Hoe -Standard
| 36***80 | Stick Group-Hoe; -Standard | 1 |
361-1485 Stick Gp-Hoe -Long, Heavy-Duty
| 36***85 | Stick Group-Hoe; -Long, Heavy-Duty | 1 |
270-6504 Stick Gp-Hoe -Long, Heavy Duty
| 27***04 | Stick Group-Hoe; -Long, Heavy Duty | 1 |
270-6580 Stick Gp-Hoe -Long, Thumb
| 27***80 | Stick Group-Hoe; -Long, Thumb | 1 |
Lubrication System
317-9621 Breather Gp
| 31***21 | Breather Group | 1 |
320-2237 Breather Gp
| 32***37 | Breather Group | 1 |
280-3721 Filler Gp-Engine Oil
| 28***21 | Filler Group-Engine Oil | 1 |
329-4191 Filter & Mtg Gp-Engine Oil
| 32***91 | Filter & Mtg Group-Engine Oil | 1 |
280-3729 Lines Gp-Turbocharger Oil
| 28***29 | Lines Group-Turbocharger Oil | 1 |
280-3728 Pump Gp-Engine Oil
| 28***28 | Pump Group-Engine Oil | 1 |
Machine Arrangement
343-5186 Chassis Ar
| 34***86 | Chassis Ar | 1 |
343-5185 Common Ar
| 34***85 | Common Ar | 1 |
Operator Station
267-4374 Accessory Gp-Cab -Screen
| 26***74 | Accessory Group-Cab; -Screen | 1 |
267-4377 Accessory Gp-Cab -Fan
| 26***77 | Accessory Group-Cab; -Fan | 1 |
282-9307 Air Conditioner & Mounting Gp
| 28***07 | Air Conditioner & Mounting Group | 1 |
273-1445 Air Conditioner Gp
| 27***45 | Air Conditioner Group | 1 |
356-3487 Air Conditioner Gp -With Air Duct
| 35***87 | Air Conditioner Group; -With Air Duct | 1 |
344-3091 Cab Ar -With Air Conditioner
| 34***91 | Cab Ar; -With Air Conditioner | 1 |
344-8138 Cab Ar -Heater
| 34***38 | Cab Ar; -Heater | 1 |
282-9689 Cab Gp
| 28***89 | Cab Group | 1 |
352-8671 Cab Gp
| 35***71 | Cab Group | 1 |
344-3072 Canopy Ar
| 34***72 | Canopy Ar | 1 |
344-3114 Canopy As
| 34***14 | Canopy As | 1 |
344-3085 Canopy Gp
| 34***85 | Canopy Group | 1 |
283-4171 Compressor Gp-Refrigerant
| 28***71 | Compressor Group-Refrigerant | 1 |
352-0058 Condenser & Mtg Gp-Refrigerant
| 35***58 | Condenser & Mtg Group-Refrigerant | 1 |
263-2275 Console Gp-Operator -Armrest
| 26***75 | Console Group-Operator; -Armrest | 1 |
268-2520 Console Gp-Operator -Lh
| 26***20 | Console Group-Operator; -Lh | 1 |
268-2519 Console Gp-Operator -Rh
| 26***19 | Console Group-Operator; -Rh | 1 |
297-9326 Control & Mtg Gp-Joystick
| 29***26 | Control & Mtg Group-Joystick | 1 |
272-0474 Control & Mtg Gp-Pedal -Travel
| 27***74 | Control & Mtg Group-Pedal; -Travel | 1 |
298-0659 Control Gp-Blade -Angle
| 29***59 | Control Group-Blade; -Angle | 1 |
282-9834 Control Gp-Hydraulic Hand -Travel
| 28***34 | Control Group-Hydraulic Hand; -Travel | 1 |
297-9330 Control Gp-Joystick -Lh
| 29***30 | Control Group-Joystick; -Lh | 1 |
297-9333 Control Gp-Joystick -Rh
| 29***33 | Control Group-Joystick; -Rh | 1 |
297-9327 Control Gp-Joystick -Rh
| 29***27 | Control Group-Joystick; -Rh | 1 |
297-9331 Control Gp-Pilot Operated Hyd -Lh
| 29***31 | Control Group-Pilot Operated Hydraulic; -Lh | 1 |
297-9332 Control Gp-Pilot Operated Hyd
| 29***32 | Control Group-Pilot Operated Hydraulic | 1 |
297-9334 Control Gp-Pilot Operated Hyd -Rh
| 29***34 | Control Group-Pilot Operated Hydraulic; -Rh | 1 |
297-9328 Control Gp-Pilot Operated Hyd -Rh
| 29***28 | Control Group-Pilot Operated Hydraulic; -Rh | 1 |
267-4359 Control Gp-Pilot Operated Hyd -Blade
| 26***59 | Control Group-Pilot Operated Hydraulic; -Blade | 1 |
344-3089 Cover Gp-Access
| 34***89 | Cover Group-Access | 1 |
281-1195 Door Gp-Cab
| 28***95 | Door Group-Cab | 1 |
356-3821 Duct Gp-Cab Air
| 35***21 | Duct Group-Cab Air | 1 |
282-9310 Duct Gp-Cab Air
| 28***10 | Duct Group-Cab Air | 1 |
353-0004 Guard Gp-Canopy -Mesh
| 35***04 | Guard Group-Canopy; -Mesh | 1 |
267-4363 Guard Gp-Window
| 26***63 | Guard Group-Window | 1 |
347-1110 Handrail Gp -Canopy
| 34***10 | Handrail Group; -Canopy | 1 |
282-9311 Heater & Mtg Gp-Cab
| 28***11 | Heater & Mtg Group-Cab | 1 |
282-9309 Heater Ar-Cab -With Air Duct
| 28***09 | Heater Ar-Cab; -With Air Duct | 1 |
273-1450 Heater Gp-Cab
| 27***50 | Heater Group-Cab | 1 |
266-6835 Horn Gp-Electric
| 26***35 | Horn Group-Electric | 1 |
352-0000 Lines Gp-Air Conditioner
| 35***00 | Lines Group-Air Conditioner | 1 |
352-0001 Lines Gp-Heater
| 35***01 | Lines Group-Heater | 1 |
281-1186 Link Gp-Window
| 28***86 | Link Group-Window | 1 |
267-4371 Mirror Gp-Down View -Exterior, Rear, Rh
| 26***71 | Mirror Group-Down View; -Exterior, Rear, Rh | 1 |
267-4367 Mirror Gp-Rear View -Exterior, Rh
| 26***67 | Mirror Group-Rear View; -Exterior, Rh | 1 |
267-4366 Mirror Gp-Rear View -Exterior, Lh
| 26***66 | Mirror Group-Rear View; -Exterior, Lh | 1 |
354-0370 Mirror Gp-Rear View -Exterior, Lh
| 35***70 | Mirror Group-Rear View; -Exterior, Lh | 1 |
354-0369 Mirror Gp-Rear View -Exterior, Rh
| 35***69 | Mirror Group-Rear View; -Exterior, Rh | 1 |
364-0924 Mirror Gp-Rear View -Rh
| 36***24 | Mounting Spacer, Mirror Group-Rear View; -Rh | 1 |
364-0925 Mirror Gp-Rear View -Lh
| 36***25 | Mirror Group-Rear View; -Lh | 1 |
286-9482 Mounting Gp-Mirror
| 28***82 | Mounting Group-Mirror | 1 |
318-4960 Operator Ar
| 31***60 | Operator Ar | 1 |
344-3084 Platform Gp-Operator
| 34***84 | Platform Group-Operator | 1 |
344-3268 Platform Gp-Operator
| 34***68 | Platform Group-Operator | 1 |
267-1615 Seat & Mounting Gp -Low Back, Suspension, Vinyl
| 26***15 | Seat & Mounting Group; -Low Back, Suspension, Vinyl | 1 |
267-1614 Seat & Mounting Gp -Cloth, Low Back, Suspension
| 26***14 | Seat & Mounting Group; -Cloth, Low Back, Suspension | 1 |
283-0278 Seat Belt Gp -Retractable, 2-In
| 28***78 | Seat Belt Group; -Retractable, 2-In | 1 |
267-1616 Seat Belt Gp -Retractable, 3-In
| 26***16 | Seat Belt Group; -Retractable, 3-In | 1 |
267-1617 Seat Gp-Suspension -Cloth, High Back
| 26***17 | Seat Group-Suspension; -Cloth, High Back | 1 |
273-7001 Washer Gp-Window
| 27***01 | Washer Group-Window | 1 |
280-0421 Window Gp-Front
| 28***21 | Window Group-Front | 1 |
281-4451 Window Gp-Sliding
| 28***51 | Window Group-Sliding | 1 |
Power Train
282-1533 Drive Gp-Final
| 28***33 | Drive Group-Final | 1 |
265-8758 Motor & Mtg Gp-Travel
| 26***58 | Motor & Mtg Group-Travel | 1 |
264-8424 Power Train Ar
| 26***24 | Power Train Ar | 1 |
Service Equipment And Supplies
358-9166 Cap Gp-Protection
| 35***66 | Cap Group-Protection | 1 |
273-0475 Film Gp -Control Pattern
| 27***75 | Film Group; -Control Pattern | 1 |
268-4783 Film Gp -Auxiliary
| 26***83 | Film Group; -Auxiliary | 1 |
280-7671 Film Gp
| 28***71 | Film Group | 1 |
353-2953 Film Gp -Auxiliary
| 35***53 | Film Group; -Auxiliary | 1 |
363-4604 Film Gp -Cab Heater
| 36***04 | Film Group; -Cab Heater | 1 |
283-4718 Film Gp -Standard
| 28***18 | Film Group; -Standard | 1 |
362-3221 Film Gp -Cab
| 36***21 | Film Group; -Cab | 1 |
273-0745 Plate & Film Gp -U.S.
| 27***45 | Plate & Film Group; -U.S. | 1 |
273-0746 Plate & Film Gp -International
| 27***46 | Plate & Film Group; -International | 1 |
343-5187 Plate & Film Gp
| 34***87 | Plate & Film Group | 1 |
Undercarriage
344-1565 Frame Gp-Undercarriage
| 34***65 | Frame Group-Undercarriage | 1 |
260-6344 Gear & Bearing Gp-Swing
| 26***44 | Gear & Bearing Group-Swing | 1 |
263-9263 Guard Gp-Track Guide
| 26***63 | Guard Group-Track Guide | 1 |
265-8732 Idler Gp-Front -Lh
| 26***32 | Idler Group-Front; -Lh | 1 |
265-8731 Idler Gp-Front
| 26***31 | Idler Group-Front | 1 |
265-8733 Idler Gp-Front -Rh
| 26***33 | Idler Group-Front; -Rh | 1 |
263-9240 Link As-Track
| 26***40 | Link As-Track | 1 |
263-9246 Pad Gp-Track Rubber
| 26***46 | Pad Group-Track Rubber | 1 |
351-8817 Roller Ar-Track & Carrier
| 35***17 | Roller Ar-Track & Carrier | 1 |
265-7675 Roller Gp-Track Carrier
| 26***75 | Roller Group-Track Carrier | 1 |
265-7674 Roller Gp-Track-Center Flange
| 26***74 | Roller Group-Track-Center Flange | 1 |
263-9243 Track Ar -With Rubber Pads
| 26***43 | Track Ar; -With Rubber Pads | 1 |
263-9245 Track Gp -Steel, With Rubber Pads, Rh
| 26***45 | Track Group; -Steel, With Rubber Pads, Rh | 1 |
263-9242 Track Gp -With Rubber Pads
| 26***42 | Track Group; -With Rubber Pads | 1 |
263-9238 Track Gp -Steel
| 26***38 | Track Group; -Steel | 1 |
263-9241 Track Gp -With Rubber Pads
| 26***41 | Track Group; -With Rubber Pads | 1 |
263-9239 Track Gp -Steel
| 26***39 | Track Group; -Steel | 1 |
263-9244 Track Gp -Steel, With Rubber Pads, Lh
| 26***44 | Track Group; -Steel, With Rubber Pads, Lh | 1 |
354-1572 Track Gp -Rubber Belt
| 35***72 | Track Group; -Rubber Belt | 1 |
344-1564 Undercarriage Ar
| 34***64 | Undercarriage Ar | 1 |
Work Tools
261-1141 Blade & Mounting Gp
| 26***41 | Blade & Mounting Group | 1 |
280-2320 Blade & Mounting Gp -Power Angle
| 28***20 | Blade & Mounting Group; -Power Angle | 1 |
343-5213 Blade Ar
| 34***13 | Blade Ar | 1 |
343-5192 Blade Ar-Angling
| 34***92 | Blade Ar-Angling | 1 |
278-2041 Blade Gp-Straight
| 27***41 | Blade Group-Straight | 1 |
290-3076 Mounting Gp-Bucket
| 29***76 | Mounting Group-Bucket | 1 |
305.5D serial number reference
The machine PIN is located on a metal identification plate riveted to the main frame, typically on the right-hand side below the cab or near the boom base. To read it, identify the first three alphanumeric characters as the prefix (model/factory) and the following digits as the sequence ID.
| Prefix | Identifies | Notes |
|---|---|---|
| FLZ | 305.5D CR (Compact Radius) | Identifies 305.5D series; includes FLZ00001 and up. Engine: Mitsubishi S4Q2-T. Emissions: U.S. EPA Tier 4 Interim and EU Stage IIIA. Configuration features include a compact radius design where the upper body stays within 140 mm (5.5 in) of the undercarriage. Includes options for standard or long stick configurations, and rubber or steel tracks. Global/Tier 4 Interim generation. |
Frequently asked questions
What engine is used in the Caterpillar 305.5D?
The Caterpillar 305.5D is powered by a Mitsubishi S4Q2-T engine, providing 47 hp (35 kW) of net power.
What is the operating weight of this machine?
The operating weight varies by configuration: approximately 5,305 kg (11,696 lb) for standard models and up to 5,465 kg (12,048 lb) when equipped with an enclosed cab.
What replaced the 305.5D?
The 305.5D was part of the D-Series lineage; newer generations like the 305E and subsequent Next Generation models have succeeded this series in the Caterpillar lineup.
What 305.5D owners discuss
What hydraulic system configuration is found on the 305.5D?
The machine utilizes a closed, load-sensing hydraulic system featuring a variable displacement piston pump for smooth and powerful performance.
What are common electrical failure symptoms in Caterpillar excavators?
Electrical instability often manifests as unpredictable fault codes, startup failures, or erratic ECM behavior. Common root causes include moisture intrusion into connectors, loose or corroded grounds, and voltage loss under load due to battery deterioration or alternator failure.
What engine-related issues should be monitored on this series?
Potential concerns include starting difficulties, excessive smoke (indicating fuel/oil leaks or combustion issues), and unusual noises. Power loss may also occur if the drive coupling is worn or slipping.
What are the known failure points for hydraulic motors in CAT track drives?
A frequent issue in track drive motors is a leak occurring between the sprocket and the back side of the motor, typically caused by a failed duo-cone seal (also called a floating face seal or mechanical face seal).
What hydraulic fluid alternatives are acceptable if Caterpillar HYDO is unavailable?
Acceptable alternatives include Cat Diesel Engine Oil, Cat Transmission/Drive Train Oil (TDTO/TMS), Cat Multi-Purpose Tractor Oil (MTO), or a commercial heavy-duty diesel engine oil with a minimum zinc content of 900 ppm.
What should be checked when buying a used 305.5D?
Verify if the 'Joystick Control Selector' (pattern changer) is installed, as this is an 'if equipped' feature located on the cab floor near the left-side door. Additionally, inspect the hydraulic quick coupler for wear and check the condition of the undercarriage tracks.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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