Caterpillar AP-755
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar AP-755 is a mid-size tracked asphalt paver built for highway, road, and parking-lot mainline paving. Production ran roughly 2006 to 2011 under serial prefix B3T. Power comes from the Cat C7, a 7.2-liter turbocharged inline-six rated at 202 hp (151 kW) gross and 188 hp (140 kW) net at 2300 rpm; some parts references still list the engine under its earlier 3126B designation, since the C7 carries over the same base block under a new name. Operating weight with screed installed runs around 21,600 kg (47,600 lb). Propulsion is fully hydrostatic, with dual variable-displacement pumps driving fixed-displacement track motors — there is no mechanical transmission or gear-type final drive to service. The AP-755 shipped with a choice of vibratory screeds: the AS3251C, covering 2.50-4.70 m (8'2"-15'5") standard paving width and extending to 7.50 m (24'7"), and the AS4251C, covering 2.55-5.00 m (8'4"-16'5") standard and extending to 7.80 m (25'7"). Its closest same-era sibling in the Cat lineup is the AP-655D, another tracked paver built on a similar hydrostatic layout.
Caterpillar did not carry the AP-755 name forward under a direct lettered successor the way it did with some other paver lines, and no AP-755B or AP-755D follow-on is documented. The model sits between Cat's earlier D-series and C-series tracked pavers and the later F-series and current bare-numbered lineup (AP600, AP655, AP1000, AP1055), which moved to different engine families and updated screed controls over time. Because no single machine directly inherited the AP-755 nameplate, buyers tracing a successor should look at the wider post-2011 AP600/AP655/AP1000 generation rather than expect a like-for-like replacement. In the used and parts market, the AP-755 still turns up regularly from its production run, valued for the mechanical simplicity of its hydrostatic drive and the field-proven C7 engine, which shares major components with other Cat C7-powered machines of the same period. Parts support leans on that shared C7 engine base plus the paver-specific screed, auger, and conveyor drivetrain — the components most likely to need attention on a machine in this age and hour range.
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 AP-755 specifications
Engine
| Engine model | Cat C7, 7.2 L (439 cu in) inline-6, turbocharged. Factory parts/service documentation for the AP-755 (serial prefix B3T) ties the machine to the C7; some third-party spec databases still tag it under the closely related 3126B designation, the same base engine block renamed C7 in the early 2000s. |
| Gross power (SAE J1995) | 150.7 kW (202 hp); rated speed given as 2200-2300 rpm depending on source |
| Net power | 140.2 kW (188 hp) |
| Displacement | 7.2 L (439 cu in) |
| Cylinders / aspiration | 6-cylinder, turbocharged |
| Emissions tier | Not documented in available sources for this exact serial range — verify against the data plate or with your dealer |
Weights
| Operating weight (with screed) | 21,600 kg (47,620 lb) |
| Shipping weight | Not published in available sources |
| Ground pressure | Not published in available sources |
Dimensions
| Transport length, with screed | 6500 mm (21 ft 4 in) |
| Transport length, without screed | 5300 mm (17 ft 5 in) |
| Transport width | 2500 mm (8 ft 3 in) |
| Transport height | 3800 mm (12 ft 6 in) |
| Width with hopper open | 3500 mm (11 ft 6 in) |
| Length of track on ground | 3125 mm (10 ft 3 in) |
| Paving width | Varies by screed. AS-3251 screed: 2.50-4.70 m standard, 7.50 m max with solid bolt-on extensions on both sides. AS-4251 screed: 2.55-5.00 m standard, 7.80 m max with solid extensions. |
Performance
| Travel speed, max | 6 km/h (3.8 mph) |
| Paving speed, max | 26 m/min (85.4 ft/min) |
| Gradeability | Not published in available sources |
Service capacities (summary)
| Fuel tank | Not documented in available sources — verify against the data plate or with your dealer |
| Hydraulic system | Not documented in available sources |
| Engine oil | Not documented in available sources |
| Cooling system | Not documented in available sources |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
AP-755 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with filter) - C7 diesel | Not published in accessible spec sheets for this paver's exact pan configuration - verify against the AP-755 OMM refill chart or the machine data plate before servicing. General C7-class crankcase-with-filter fill runs roughly 18-25 L (19-27 US qt) depending on pan depth, offered only as a rough reference, not an AP-755-confirmed figure. | Cat DEO-ULS SAE 15W-40 for warm/stable climates, Cat DEO-ULS SAE 10W-30 for wider swings, Cat DEO-ULS SYN SAE 5W-40 or Cat DEO Cold Weather SAE 0W-40 in cold climates. |
| Cooling system | Not documented for the assembled paver circuit in public sources - the C7 engine block/jacket alone runs near 15 L (4 US gal), but total system volume with the paver's radiator and hose routing is unconfirmed. Check the OMM refill chart. | Cat ELC (Extended Life Coolant), premixed, or Cat DEAC conventional heavy-duty antifreeze/coolant; mix ratio set by expected ambient low temperature. |
| Fuel tank | Not documented in public specification sources for the AP-755 - confirm on the machine data plate or OMM refill chart. | Ultra-low-sulfur No. 2-D diesel meeting Cat fuel specification; blend with No. 1-D or use a winter-grade blend in cold climates to prevent fuel gelling/waxing. |
| Hydraulic system (tank and circuit, includes propel motors) | Not documented in public sources for the AP-755. The paver runs a fully hydrostatic propel and function circuit with no separate mechanical transmission or final-drive gear cases, so track/wheel drive motors and all paver functions draw from the one hydraulic reservoir; get the exact tank and system total from the OMM refill chart. | Cat HYDO Advanced 10 (multi-viscosity) for general-duty use; select the cold-weather-rated grade for low ambient starts. Where the fluid spec calls for a shared hydraulic/drivetrain oil, Cat TDTO or Multigrade TDTO is the alternate named spec. |
| Grease (spec only, no reservoir capacity) | Not applicable - applied per lubrication point per the greasing schedule, not a fill-and-check reservoir. | Cat Advanced 3Moly Grease (or Cat Multipurpose Grease NLGI 2) at screed, pins, bushings and other listed grease points. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar AP-755 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 3,000 h |
|
| Every 6,000 h |
|
Servicing the AP-755 beyond the schedule
Predictive Maintenance & Fluid Analysis
Track the C7 engine and hydrostatic propel circuit with regular oil sampling instead of relying on fixed change intervals alone. The dual variable-displacement propel pumps and fixed-displacement track motors show wear trends in hydraulic oil analysis well before a leak or power loss shows up on the ground. Sample engine oil, propel hydraulic oil, and final drive or auger gearbox oil at every scheduled interval. Watch coolant condition on the C7 for extender additive depletion, and check auger gearbox and conveyor drive oil for tramp metal from chain wear.
Corrective & Common Repairs
Typical AP-755 repairs center on the hydrostatic propel system: chafed hoses, fitting leaks, and pump or motor output loss from a worn charge circuit are the most common complaints. Auger and conveyor drive chains stretch under abrasive mix exposure and need retensioning or replacement. Screed heating elements on the AS3251C or AS4251C fail individually and are replaced in place rather than as an assembly. Track pads, rollers, and idlers wear from constant hot-mix contact and warrant inspection well before outright failure.
Overhaul & Rebuild Points
At higher hours, plan overhaul work around the C7's turbocharger, injectors, and valve train, plus a full rebuild or exchange of the hydrostatic propel pump and motor set once oil analysis shows internal wear. Track undercarriage components — chain, rollers, idlers — typically need replacement before the engine does, given constant ground contact with hot mix. Screed crown and extension mechanisms wear at pivot points and slide tubes; rebuild work usually addresses bushings and wear plates rather than the screed frame itself.
Seasonal & Environment Servicing
Cold starts on the C7 depend on functioning intake air heaters and correct-viscosity engine and hydrostatic oil; thickened hydraulic oil in winter slows propel response across the dual-pump system. Screed heating, whether LPG or electric depending on configuration, needs a pre-season check since a cold screed drags and mars the mat on early and late-season jobs. In hot climates, inspect the hydraulic oil cooler and radiator cores for packed asphalt dust and clean them often, since both the C7 and the hydrostatic circuit depend on those cores during long paving runs.
AP-755 common service parts
| Part number | Part | Notes | |
|---|---|---|---|
| 1R-0762 | Filter As-Fuel | Fuel system service | Check fitment → |
| 161-1705 | Sensor As-Pressure | Lubrication service | Check fitment → |
| 1R-1807 | Filter As-Engine Oil | Lubrication service | Check fitment → |
| 2P-2537 | Stud Engine Oil Filter | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
AP-755 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| CID 0100-01 | Engine oil pressure low for current engine speed | Low oil level, plugged oil filter, worn oil pump, or a failed pressure sensor | Shut engine down, check oil level and filter condition, confirm reading with a mechanical gauge before replacing the sensor |
| CID 0110-00 | Engine coolant temperature above normal operating range | Low coolant, blocked radiator or fan drive fault, stuck thermostat, or sensor drift | Shut down, check coolant level and clear debris from the radiator/fan, verify sensor reading against a manual gauge |
| CID 0111-01 | Engine coolant level below the safe minimum | External coolant leak, low initial system fill, or a faulty level sensor/switch | Inspect hoses and radiator for leaks, top off coolant to spec, retest before extended operation |
| CID 0102-03/04 | Boost (intake manifold) pressure sensor signal outside the valid voltage range | Damaged sensor wiring, corroded connector, or a failed boost pressure sensor | Inspect sensor connector and harness, check sensor supply/return voltage, replace sensor if wiring checks good |
| CID 0094-01 | Fuel delivery pressure lower than the ECM expects at current speed/load | Clogged fuel filter, air in the fuel system, or a weak transfer pump | Check fuel filter and primary supply, prime and bleed the fuel system, retest pressure |
| CID 0168-02/03 | ECM battery/system voltage reading outside the normal range | Weak or discharged battery, poor ground connection, failing alternator, or a loose main harness connector | Load-test batteries, check charging system output, clean and tighten ground and power connections |
| CID 0190-08 | Primary engine speed/timing sensor signal erratic or lost | Damaged sensor, incorrect sensor air gap, or a wiring fault | Inspect sensor mounting and air gap, check wiring continuity, replace sensor if faulty |
| CID 0247-02 | Loss of or erratic communication on the machine's data link between the engine ECM and other controllers/displays | Damaged data link wiring, loose connector, or a module losing power | Check data link harness and connectors, confirm all modules have power, clear the code and retest after repair |
| CID 0091-08 | Engine speed (throttle) control signal from the operator's speed dial erratic or out of range | Worn speed control potentiometer, wiring fault, or loose dash-mounted throttle linkage | Check speed control wiring and connector, sweep-test the potentiometer resistance, replace if out of spec |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
AP-755 attachments & work tools
Screed family
AP-755 pairs with the AS3251C standard screed and the AS4251C double-width hydraulic power-extendible screed, both offered with variable-frequency tamper-and-vibrator compaction and with LPG or electric plate heat. The AS4251C covers a standard 2.55-5.0 m paving width, extendible to roughly 7-8 m with bolt-on mechanical extensions (max width varies by configuration/series and heat system).
Screed extension kits
Bolt-on mechanical screed extension sections, typically offered in 5.5 m, 6.5 m, and 7 m increments (up to 8 m on some configurations), widen the double-width main screed for multi-lane or wide-mat paving. Extensions mount to the main screed frame and share its tamper/vibrator drive; foldable end gates are a companion option for edge containment.
Screed heat and controls
Screed plate heat is available as LPG (thermostatic burner ignition) or electric (tractor-mounted generator feeding replaceable heating elements with multi-zone thermostatic control). A power crown adjuster and a tamper/vibrator/counterbalance display control are listed factory screed options.
Material handling / hopper-auger system
Independent left and right augers and conveyors feed the screed; augers run about 406 mm in diameter with roughly 215 mm of hydraulic height adjustment for truck load/unload clearance and coarser mix flow. An auger-and-mainframe extension kit widens the feed system to match wider screed extensions. Hopper capacity for this paver platform runs about 6.5 cubic meters (approx. 14 tonne), with a curved hopper and narrow chain guard design.
Hopper apron
The front hopper apron is manually operated as standard. A power folding front apron is a factory hydraulic option, switch-controlled from the console, that folds the apron rearward for faster material flow and easier hopper clean-out.
Grade and slope control
Factory-fit grade/slope references include non-contacting sonic grade sensors, contacting (ski) grade sensors, a sonic averaging beam, and outboard or inboard levelers/skis in 9.15 m and 12.2 m lengths, plus automatic grade-and-slope control. These mount to the screed tow points and are the main add-on 'work tool' family for this paver class beyond the screed itself.
Auxiliary power / generator
An optional belt- or hydraulic-driven single-phase generator (on the order of 25 kW at 60 Hz) powers electric screed heat and an optional auxiliary power panel. The panel supplies about 4 kW through GFCI-protected 120V or 240V receptacles for job-site tools, with a 50 Hz 'tool mode' for frequency-sensitive equipment.
Undercarriage configuration
This paver platform family is built around a track-type undercarriage, offered as a rubber-belt Mobil-Trac system or a steel-track undercarriage on D3 dozer-style track rails with a quad rear bogie; ground-contact track length runs roughly 3.0-3.1 m depending on the undercarriage chosen. Verify which undercarriage a specific AP-755 serial range shipped with, since documentation for this exact model's undercarriage split is thin.
Operator station and guarding
Dual swing-out operator's stations with a sliding control console are standard and can extend beyond the machine frame for edge/joint visibility. A folding full-width canopy with side-extending wings, a warning beacon, and a steering guide are listed factory options, along with foldable screed end gates.
Coupler / mounting system
Work tools on this paver are factory-installed or bolt-on additions (screed extensions, auger and mainframe extensions, leveler arms, sensor brackets) rather than a quick-coupler tool-carrier arrangement; there is no universal quick-coupler system on this paver class, unlike excavator or loader work tools.
All AP-755 assemblies by section
Every catalogued assembly group for the Caterpillar AP-755. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
294-7675 Cover Gp-Air Inlet -Starting Aid Heater
| 19***94 | Stud; (M8x1.25x80-mm)(M8x1.25x80-mm) | 4 |
| 1U***46 | Sealant (For Locations A) | 0 |
| 20***51 | Elbow; (Air Inlet) | 1 |
288-0973 Cover Gp-Air Inlet -Starting Aid Heater
| 24***95 | Insulator; (Air Inlet Heater) | 1 |
| 28***73 | Cover Group-Air Inlet; -Starting Aid Heater | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 2 |
189-8780 Cover Gp-Air Inlet -Starting Aid Heater
| 18***80 | Cover Group-Air Inlet; -Starting Aid Heater | 1 |
| 24***95 | Insulator; (Air Inlet Heater) | 1 |
| 3J***07 | Seal Valve Assembly To; Seal- Tube Assembly To Logic Valve | 2 |
219-7481 Elbow Gp-Air Inlet
| 1W***31 | Clamp-Band; -Turbo Exhaust-Exhaust | 1 |
| 21***81 | Elbow Group-Air Inlet | 1 |
| 9N***25 | Adapter-Exhaust | 1 |
126-7855 Extension Gp-Exhaust
| 12***55 | Extension Group-Exhaust | 1 |
| 21***64 | Manifold-Exhaust; (End) | 2 |
| 21***55 | Manifold-Exhaust; (Center) | 1 |
219-5840 Manifold Gp-Exhaust
| 21***40 | Manifold Group-Exhaust | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
| 9S***05 | Plug-O-Ring; (Straight Thread O-Ring) | 1 |
151-0864 Plug Gp-Air Inlet Manifold
| 13***02 | Clamp As; (Turbine)(Turbine) | 1 |
| 15***64 | Plug Group-Air Inlet Manifold | 1 |
| 15***72 | Clamp As; (Compressor) | 1 |
281-4202 Turbocharger Gp
| 24***47 | Blade | 1 |
| 24***48 | Blade | 1 |
| 24***52 | Blade | 1 |
250-7699 Turbocharger Gp
| 25***99 | Turbocharger Group | 2 |
| 25***24 | Sleeve; (46-cm) | 0 |
| 3E***17 | Locknut; (M10x1.5-Thd)(Spiralock) | 4 |
Basic Engine
131-3258 Adapter Gp-Auxiliary Drive
| 13***48 | Adapter | 1 |
| 13***58 | Adapter Group-Auxiliary Drive | 1 |
| 6V***39 | Washer-Hard-Alt Strap To Fan Drive Belt | 8 |
124-7786 Belt Tensioner Gp
| 12***87 | Bracket-Mounting | 1 |
| 12***19 | Support-Compressor | 1 |
| 12***86 | Belt Tensioner Group | 1 |
212-4289 Camshaft Gp
| 10***94 | Plate-Thrust | 1 |
| 1B***05 | Key; (Woodruff) | 1 |
| 21***88 | Camshaft As | 1 |
4w-3462 Carrier Gp-Seal
| 23***83 | Gasket | 1 |
| 24***76 | Seal | 1 |
| 2W***46 | Cover | 1 |
222-5947 Cover Gp-Cylinder Block
| 11***18 | Bolt As; (M8x1.25x16-mm) | 3 |
| 17***67 | Spacer; (8.8x16x10-mm Thk)(Marked X) | 8 |
| 1U***46 | Sealant (For Locations A) | 0 |
118-1727 Cover Gp-Front Housing
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 13***19 | Seal-Integral; (Integral) | 1 |
| 4W***26 | Cover | 1 |
172-8732 Cover Gp-Front Housing
| 06***55 | Seal-O-Ring (Id=47.22mm) | 1 |
| 17***32 | Cover Group-Front Housing | 1 |
| 5C***61 | Nut (M8x1.25 Thd); (M8x1.25 Thd) | 2 |
211-9120 Cover Gp-Front Housing
| 12***57 | Washer; (10.85x19.3x1.27-mm Thk) | 2 |
| 13***22 | Stud | 2 |
| 16***76 | Cover As-Front | 1 |
261-3723 Cover Gp-Valve Mechanism -Front Fill
| 09***49 | Bolt; (M8x1.25x40-mm) | 13 |
| 21***01 | Seal-Bulk; (23-Dm)(Valve Mechanism Cover) | 0 |
| 22***31 | Cap As-Filler; (Engine Oil) | 1 |
210-5590 Crankshaft Gp
| 10***08 | Bearing-Main; (Standard) | 6 |
| 14***62 | Bearing; (0.25mm Undersize) | 0 |
| 14***64 | Bearing; (0.5mm Undersize) | 0 |
263-3774 Cylinder Block Gp
| 26***74 | Cylinder Block Group | 1 |
| 5P***47 | Washer (Bracket To Valve Support) | 14 |
| 7E***68 | Cap-Crankshaft Bearing | 7 |
305-8141 Cylinder Block Gp
| 10***04 | Sleeve-Cylinder | 0 |
| 21***86 | Bearing-Sleeve; (Camshaft) | 1 |
| 26***74 | Cylinder Block Group | 1 |
221-4482 Cylinder Block Gp
| 1W***07 | Sleeve | 2 |
| 22***82 | Cylinder Block Group | 1 |
| 30***41 | Cylinder Block Group | 1 |
219-5844 Cylinder Head As
| 14***18 | Insert-Valve Seat; (Exhaust, Standard) | 6 |
| 18***82 | Insert-Valve Seat; (0.127-mm Os Od, Exhaust) | 0 |
| 18***83 | Insert-Valve Seat; (0.254-mm Os Od, Exhaust) | 0 |
314-4184 Cylinder Head As
| 22***00 | Sleeve-Injector | 6 |
| 23***85 | Insert-Valve Seat; (Standard)(Exhaust) | 6 |
| 26***57 | Insert-Valve Seat; (Standard)(Inlet) | 12 |
219-5849 Cylinder Head Gp
| 13***95 | Gasket-Cylinder Head | 1 |
| 13***52 | Bolt-12 Point Head; (M20x2.5x170mm) | 1 |
| 14***89 | Fastener Group-Cylinder Head | 14 |
219-5846 Cylinder Head Gp
| 13***83 | Retainer-Spring | 6 |
| 13***15 | Seat-Valve Spring | 6 |
| 13***18 | Spring-Valve; (Exhaust) | 6 |
219-5847 Cylinder Head Gp
| 1N***99 | Plug-O-Ring; (Straight Thread) | 2 |
| 21***66 | Seal-O-Ring; (Engine Oil) | 1 |
| 21***47 | Cylinder Head Group | 1 |
300-9550 Cylinder Head Gp
| 13***83 | Retainer-Spring | 6 |
| 13***15 | Seat-Valve Spring | 6 |
| 13***18 | Spring-Valve; (Exhaust) | 6 |
165-6934 Damper Gp
| 16***34 | Damper Group | 1 |
| 16***21 | Damper Assem. | 1 |
198-6475 Drain Gp-Engine Oil
| 11***19 | Plug-Magnetic; (Engine Oil Pan Drain) | 2 |
| 19***75 | Drain Group-Engine Oil | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 2 |
120-6657 Drive Gp-Water Pump
| 03***75 | V-Belt; (Pump Drive)(Water) | 1 |
| 10***67 | Plate As-Idler | 1 |
| 11***04 | Pulley As-Idler | 1 |
258-8723 Fastener Gp-Cylinder Head
| 22***44 | Clip | 3 |
| 24***00 | Spring | 11 |
| 25***23 | Fastener Group-Cylinder Head; -Valve Cover Base | 1 |
132-1458 Fastener Gp-Engine Mounting
| 13***58 | Circlip, Fastener Group-Engine Mounting | 1 |
| 5P***47 | Washer (Bracket To Valve Support) | 2 |
| 6V***29 | Bolt; (M16x2.0x40mm) | 2 |
211-9118 Fastener Gp-Front Cover
| 21***18 | Fastener Group-Front Cover | 1 |
| 6V***17 | Bolt; (M8x1.25x30-mm)(Location Z) | 12 |
| 8T***00 | Bolt (M8x1.25x60mm); (M8x1.25x60-mm) | 2 |
113-6170 Fastener Gp-Lifting -Rear Engine
| 11***70 | Fastener Group-Lifting; -Engine, Rear | 1 |
| 8T***21 | Washer-Hard; (11x21x2.5-mm Thk)(M10x1.50x30mm) | 3 |
| 8T***36 | Capscrew; (Hex Hd) (M10 X 1.50 X 25l Gr 10.9) | 3 |
273-2716 Flywheel Gp
| 1W***64 | Gear-Flywheel Ring; (126-Teeth) | 1 |
| 20***82 | Flywheel As | 1 |
| 27***16 | Flywheel Group | 1 |
205-1321 Gear Gp-Front
| 11***69 | Plate-Thrust | 1 |
| 11***72 | Bearing | 1 |
| 11***19 | Plate-Retaining | 1 |
132-2106 Housing Gp-Flywheel
| 13***06 | Housing Group-Flywheel | 1 |
| 6V***42 | Bolt (M10x1.50x40mm) | 2 |
| 7C***33 | Housing-Flywheel | 1 |
245-3260 Housing Gp-Front
| 1U***46 | Sealant (For Locations A) | 0 |
| 24***59 | Housing-Front | 1 |
| 24***60 | Housing Group-Front | 1 |
120-6661 Idler Gp-Belt
| 12***61 | Idler Group-Belt | 1 |
| 14***11 | Pulley As-Idler | 1 |
| 14***22 | Bolt-Special; (M10x1.5 Thd) | 1 |
139-4081 Lifter Gp-Valve -Mechanism
| 13***81 | Lifter Group-Valve; -Mechanism | 1 |
| 13***84 | Spacer; (15.9x24x6-mm Thk) | 2 |
| 13***76 | Shaft As-Lifter | 1 |
142-8100 Lifting Gp-Engine
| 14***00 | Lifting Group-Engine; (Engine) | 1 |
| 15***96 | Plate-Lifting; (Rear) | 1 |
| 22***66 | Plate-Lifting; (Front) | 1 |
213-4387 Mounting Gp-Alternator
| 13***06 | Support-Alternator | 1 |
| 21***87 | Mounting Group-Alternator | 1 |
| 6V***88 | Nut-Full (1/2-13 Thd); (1/2-13-Thd)(Full) | 2 |
132-1961 Mounting Gp-Engine
| 13***61 | Mounting Group-Engine | 1 |
| 5P***47 | Washer (Bracket To Valve Support) | 6 |
| 6V***29 | Bolt; (M16x2.0x40mm) | 2 |
142-7107 Mounting Gp-Fan Drive
| 14***07 | Mounting Group-Fan Drive | 1 |
| 14***37 | Support-Fan | 1 |
| 7E***13 | Bracket | 1 |
126-5931 Pan Gp-Oil -Engine
| 12***31 | Pan Group-Oil; -Engine | 1 |
| 14***09 | Plug As-Sto | 2 |
| 16***77 | Plug As | 1 |
210-5592 Piston & Rod Gp
| 16***24 | Pin-Piston | 1 |
| 17***43 | Jet As-Piston Cooling | 1 |
| 19***53 | Ring-Piston; (Intermediate) | 1 |
159-0303 Plug Gp-Cylinder Block
| 15***03 | Plug Group-Cylinder Block; (Cylinder Block) | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 2 |
| 6F***62 | Washer,Flat Transmission Oil Cooler | 1 |
162-8068 Plug Gp-Engine -Engine Oil
| 14***95 | Plug As | 1 |
| 16***68 | Plug Group-Engine; -Oil Gallery | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
121-0802 Plug Gp-Flywheel Housing
| 12***02 | Plug Group-Flywheel Housing | 1 |
| 2P***94 | Plug-Sealing | 1 |
201-8650 Pulley Gp-Crankshaft
| 20***50 | Pulley Group-Crankshaft | 1 |
| 20***51 | Pulley | 1 |
| 2W***81 | Plate-Clamp; (Pulley Clamp) | 1 |
143-7019 Pulley Gp-Fan Drive
| 11***38 | Plate; (Thrust) | 1 |
| 12***22 | Pulley-Fan; (8-Groove) | 1 |
| 12***30 | Shaft As-Fan | 1 |
175-3223 Pulley Gp-Idler
| 12***90 | Bolt; (M10x1.5) | 1 |
| 12***91 | Cover-Dust | 1 |
| 12***92 | Pulley As-Idler; (8-Groove) | 1 |
123-0858 Pulley-Alternator
| 12***58 | Pulley-Alternator; (8-Groove) | 1 |
256-3834 Rocker Arm Gp -Inlet
| 25***34 | Rocker Arm Group; -Inlet | 1 |
| 25***35 | Rocker Arm As; (Inlet) | 1 |
| 26***24 | Screw-Valve Adjustment; (M10x1.5-Thd) | 1 |
256-3831 Rocker Arm Gp -Exhaust
| 25***31 | Rocker Arm Group; -Exhaust | 1 |
| 25***32 | Rocker Arm As; (Exhaust) | 1 |
| 26***24 | Screw-Valve Adjustment; (M10x1.5-Thd) | 1 |
122-8929 Seal Gp-Crankshaft
| 12***29 | Seal Group-Crankshaft | 1 |
| 24***39 | Seal-Crankshaft; (Front)(Front) | 1 |
| 7C***71 | Seal Group-Crankshaft; (Rear)(Rear) | 1 |
7e-1717 Support Gp-Engine
| 32***23 | Support-Engine | 1 |
| 7E***17 | Support Group-Engine; Support Gp - Engine | 1 |
| 8T***68 | Bolt (M12x1.75x80mm); (M12x1.75x80-mm) | 6 |
232-3717 Valve Mechanism Gp
| 13***81 | Lifter Group-Valve; -Mechanism | 3 |
| 21***09 | Bridge-Valve | 6 |
| 23***54 | Clip | 1 |
256-3830 Valve Mechanism Gp
| 03***27 | Seal-O-Ring; (19.18mm Id) | 1 |
| 19***22 | Adapter | 1 |
| 25***30 | Valve Mechanism Group | 1 |
235-5528 Valve Mechanism Gp
| 13***17 | Spring | 5 |
| 13***98 | Shaft Assem. | 1 |
| 13***02 | Stand; (End) | 1 |
Cooling System
117-3643 Cooler Gp-Engine Oil
| 11***23 | Regulator-Water Temperature; (97-Deg C)(Coolant) | 2 |
| 11***43 | Cooler Group-Engine Oil | 1 |
| 12***66 | Gasket | 1 |
206-4228 Lines Gp-Water
| 20***28 | Lines Group-Water; -Engine | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 1 |
| 9S***08 | Plug-O-Ring; (Coolant Temperature Regulator) | 1 |
160-7075 Plug Gp-Water Lines
| 12***02 | Pump Group-Water; -Coolant | 1 |
| 16***75 | Plug Group-Water Lines | 1 |
| 2M***53 | Seal--To Seal Brake Housing To Main Housing | 1 |
117-3433 Pump Gp-Water -Coolant
| 10***01 | Cover | 1 |
| 11***33 | Pump Group-Water; -Coolant | 1 |
| 14***88 | Seal As; (Water Pump) | 1 |
120-8402 Pump Gp-Water -Coolant
| 12***02 | Pump Group-Water; -Coolant | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
| 28***73 | Cover Group-Air Inlet; -Starting Aid Heater | 1 |
Electrical And Starting System
177-9953 Alternator Gp-Charging
| 10***28 | Spacer-Special; (12.7x26x28.7-mm Thk) | 4 |
| 14***92 | Stud; (M8x1.25-Thd) | 2 |
| 17***53 | Alternator Group-Charging; (24-Volt, 80-Ampere) | 1 |
279-0498 Control & Mtg Gp-Engine Elek
| 27***98 | Control & Mtg Group-Engine Elek | 1 |
| 5P***70 | Nut-Hard; (M8 X 1.25) | 1 |
| 6V***64 | Washer-Hard; (8.8x25.5x5-mm Thk) | 1 |
142-8333 Fastener Gp-Ground Stud
| 14***33 | Fastener Group-Ground Stud | 1 |
| 16***61 | Plug As | 1 |
| 18***06 | Plug As; (High Temperature) | 1 |
251-0766 Heater Ar-Screed -Electric
| 16***04 | Sensor Group-Pressure; (Turbocharger Outlet) | 1 |
| 25***66 | Heater Ar-Screed; -Electric | 1 |
| 6V***48 | Seal--O-Ring--To Governor Drive Housing | 1 |
242-2782 Heater Ar-Screed
| 16***61 | Plug As | 1 |
| 18***06 | Plug As; (High Temperature) | 1 |
| 18***63 | Plug Group | 1 |
252-9813 Heater Ar-Screed
| 15***60 | Kit-Connecting Plug; (3-Pin)(Engine Sensor Wiring Harness) | 1 |
| 18***40 | Socket-Connector; (14-Ga To 18-Ga)(14-Ga To 18-Ga) | 3 |
| 25***13 | Heater Ar-Screed | 1 |
248-1337 Heater Gp-Screed -Electric Heat
| 24***30 | Sensor Group-Speed; -Engine Timing | 1 |
| 24***37 | Heater Group-Screed; -Electric Heat | 1 |
| 3P***47 | Seal-O-Ring (Id=13.94mm); (13.949mm Id) | 2 |
248-0918 Heater Gp-Screed -Electric Heat
| 21***67 | Seal-O-Ring | 1 |
| 22***36 | Sensor Group-Pressure; -Injection Actuation | 1 |
| 24***18 | Heater Group-Screed; -Electric Heat | 1 |
297-5355 Sensor Gp-Engine
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
| 29***55 | Sensor Group-Engine | 1 |
| 6V***09 | Seal-O-Ring (Id=16.36mm); (16.36-mm Id) | 1 |
231-1977 Sensor Gp-Engine
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
| 23***77 | Sensor Group-Engine | 1 |
| 8L***86 | Seal-O-Ring (Id=16.36mm); (16.36-mm Id) | 1 |
197-8393 Sensor Gp-Pressure
| 13***45 | Pad; (Connector) | 1 |
| 19***93 | Sensor Group-Pressure; -Atmospheric | 1 |
| 26***97 | Sensor Group-Temperature; (Air Inlet Manifold) | 1 |
210-1747 Sensor Gp-Pressure
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
| 21***47 | Sensor Group-Pressure; -Air Inlet Manifold | 1 |
| 6V***09 | Seal-O-Ring (Id=16.36mm); (16.36-mm Id) | 1 |
236-6220 Sensor Gp-Pressure
| 10***08 | Bolt (M10x1.5x35mm); (M10x1.5x35-mm) | 3 |
| 13***30 | Wire As | 1 |
| 20***41 | Starting Motor Group-Electric | 1 |
197-8394 Sensor Gp-Pressure
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
| 19***94 | Sensor Group-Pressure; -Engine Oil | 1 |
| 8L***86 | Seal-O-Ring (Id=16.36mm); (16.36-mm Id) | 1 |
224-4536 Sensor Gp-Pressure
| 03***12 | Terminal-Ring; (2-Ga, 1/4-In Screw)(Circuit Breaker) | 1 |
| 13***43 | Boot; (Red)(Red) | 1 |
| 20***77 | Bolt-Flange Head; (M8x1x25-mm) | 2 |
236-6221 Sensor Gp-Speed -Engine Timing
| 03***23 | Bolt; (1/4-28x1-In) | 5 |
| 10***02 | Housing As | 1 |
| 23***21 | Sensor Group-Speed; -Engine Timing | 1 |
274-7396 Sensor Gp-Temperature
| 26***18 | Case As | 1 |
| 26***19 | Plug As-Connector | 1 |
| 26***21 | Plug As | 2 |
197-8392 Sensor Gp-Temperature
| 10***20 | Plug As-Connector; (2-Pin) | 1 |
| 10***01 | Kit; (Receptacle) (12-Pin) (Includes Receptacle As & Wedge) | 1 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
274-7395 Sensor Gp-Temperature
| 08***48 | Bolt-Socket Head; (M8x1.25x30-mm)(M8x1.25x30mm) | 4 |
| 15***55 | Kit; (Connecting Plug) (12-Pin) (Includes Plug As Wedge & Interface Seal) | 1 |
| 15***56 | Kit-Connecting Plug; (12-Pin) | 1 |
197-8391 Sensor Gp-Temperature
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 19***91 | Sensor Group-Temperature; -Air Inlet Manifold | 1 |
| 3F***56 | Lockwasher; (8.43x15.5x0.76mm Thk) | 2 |
249-9223 Starting Aid Gp
| 24***23 | Starting Aid Group; -Wiring | 1 |
| 26***18 | Case As | 1 |
| 26***19 | Plug As-Connector | 1 |
132-1418 Starting Motor Gp-Electric
| 13***18 | Starting Motor Group-Electric | 1 |
| 24***07 | Bolt; (M6x1x40-mm)(Hex Head) | 8 |
| 27***61 | Control Group-Burner | 1 |
207-1541 Starting Motor Gp-Electric
| 20***41 | Starting Motor Group-Electric | 1 |
| 26***27 | Receptacle As | 4 |
| 26***28 | Case As | 4 |
209-5582 Switch Gp-Magnetic
| 20***82 | Switch Group-Magnetic; -Starting Aid Heater Relay-Air Inlet Heater Relay | 1 |
| 26***21 | Plug As | 4 |
| 26***28 | Case As | 4 |
258-0883 Switch Gp-Pressure
| 25***83 | Switch Group-Pressure; -Fuel Filter, Differential-Fuel Filter | 1 |
| 26***27 | Receptacle As | 2 |
| 26***28 | Case As | 2 |
198-2714 Wiring Gp-Engine
| 08***48 | Bolt-Socket Head; (M8x1.25x30-mm)(M8x1.25x30mm) | 4 |
| 15***55 | Kit; (Connecting Plug) (12-Pin) (Includes Plug As Wedge & Interface Seal) | 1 |
| 15***56 | Kit-Connecting Plug; (12-Pin) | 1 |
261-4198 Wiring Gp-Heater -Electric
| 26***27 | Receptacle As | 2 |
| 26***28 | Case As | 2 |
| 26***29 | Diode | 2 |
261-4196 Wiring Gp-Panel -Lh
| 24***87 | Connector | 40 |
| 26***96 | Wiring Group-Panel; -Lh | 1 |
| 31***45 | Hose As-Grease | 1 |
262-8016 Wiring Gp-Panel -Rh
| 24***93 | Stud; (M12x1.75x100-mm) | 52 |
| 24***68 | Plate-Screed; (Rh) | 1 |
| 24***74 | Plate-Screed; (Lh) | 1 |
257-5263 Wiring Gp-Screed -Diesel Heat
| 11***15 | Plate-Cover | 8 |
| 24***90 | Plate | 4 |
| 24***93 | Stud; (M12x1.75x100-mm) | 48 |
251-0771 Wiring Gp-Screed Heater -Electric Heat
| 24***93 | Stud; (M12x1.75x100-mm) | 52 |
| 24***97 | Nut-Brass; (M12x1.75-Thd) | 104 |
| 24***04 | Nut-Brass; (M14x2-Thd) | 16 |
322-3695 Wiring Gp-Screed Heater
| 24***13 | Heater As-Tamper Bar | 4 |
| 25***82 | Bar-Tamper; (Sliding, Lh) | 1 |
| 25***83 | Bar-Tamper; (Sliding, Rh) | 1 |
322-3730 Wiring Gp-Screed Heater
| 13***40 | Locknut; (M8x1.25-Thd) | 4 |
| 23***06 | Bumper | 1 |
| 25***75 | Plate Group-Screed; -Electric | 1 |
322-3729 Wiring Gp-Screed Heater
| 24***25 | Burner Group | 1 |
| 25***63 | Wiring Group-Screed; -Diesel Heat | 1 |
| 26***96 | Film-Warning; (Fire Hazard, Read Omm) | 2 |
322-3731 Wiring Gp-Screed Heater
| 13***40 | Locknut; (M8x1.25-Thd) | 4 |
| 23***06 | Bumper | 1 |
| 25***75 | Plate Group-Screed; -Electric | 1 |
Electrical System
274-1161 Control Gp-Burner
| 18***38 | Collar | 2 |
| 18***39 | Fan As; (Alternator) | 1 |
| 18***43 | Stator As; (Alternator) | 1 |
Engine Arrangement
272-7945 Engine Ar-Complete
| 11***70 | Fastener Group-Lifting; -Engine, Rear | 1 |
| 11***33 | Pump Group-Water; -Coolant | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
272-8136 Engine Ar-Core
| 11***43 | Cooler Group-Engine Oil | 1 |
| 19***61 | Lines Group-Injector Hydraulic Pump | 1 |
| 19***81 | Pump Group-Engine Oil | 1 |
281-2338 Installation Ar-Engine
| 27***45 | Engine Ar-Complete | 1 |
| 28***38 | Installation Ar-Engine | 1 |
Frame And Body
265-6510 Lines Gp-Grease
| 12***56 | Bolt-Socket Head; (M5x0.8x60-mm) | 4 |
| 13***40 | Locknut; (M8x1.25-Thd) | 4 |
| 23***06 | Bumper | 1 |
250-4444 Plate Gp-Screed
| 25***44 | Plate Group-Screed | 1 |
| 26***39 | Spacer | 1 |
| 26***43 | Manifold As-Gas | 1 |
250-3375 Plate Gp-Screed -Electric
| 11***15 | Plate-Cover | 8 |
| 24***90 | Plate | 4 |
| 24***17 | Plate Group-Screed; -Electric Heat | 1 |
248-0917 Plate Gp-Screed -Electric Heat
| 24***17 | Plate Group-Screed; -Electric Heat | 1 |
| 24***02 | Heater As | 4 |
| 24***12 | Heater As-Screed | 4 |
Fuel System
242-2725 Burner Gp
| 24***25 | Burner Group | 1 |
| 26***41 | Block | 1 |
| 26***47 | Washer; (13x18x1.5-mm Thk) | 4 |
268-6140 Fitting Gp-Fuel Lines
| 10***07 | Seal-O-Ring; (Fuel System) | 1 |
| 14***03 | Seal-O-Ring; (Fuel System) | 1 |
| 14***40 | Ring-Backup; (37.36mm Od), Flasher Switch; Hazard, Replaces 421164a1, Flasher Switch | 1 |
328-2585 Injector Gp-Fuel
| 26***40 | Fitting Group-Fuel Lines | 2 |
| 26***42 | Manifold Group-Fuel | 1 |
| 26***45 | Fitting; (Machined) | 8 |
268-1835 Injector Gp-Fuel
| 10***07 | Seal-O-Ring; (Fuel System) | 1 |
| 14***03 | Seal-O-Ring; (Fuel System) | 2 |
| 14***40 | Ring-Backup; (37.36mm Od), Flasher Switch; Hazard, Replaces 421164a1, Flasher Switch | 1 |
270-1895 Lines Gp-Burner
| 10***06 | Receptacle Kit; (Includes Wedge And Receptacle Assem.) | 1 |
| 14***71 | Elbow, 45, -6 Orfs Fm Swivel | 1 |
| 14***07 | Plug; (Hex Head) (-6 Orb) (Current) (16***35 Friction Disc Interchangeable With 11***47) (Use All Of One Part Number) | 4 |
263-8969 Lines Gp-Fuel Filter
| 18***99 | Connector As | 2 |
| 19***23 | Adapter Group-Oil Line; -Fuel Injection Pump-Unit Injector Hydraulic Pump | 1 |
| 20***80 | Hose As | 1 |
191-0461 Lines Gp-Injector Hyd Pump
| 19***61 | Lines Group-Injector Hydraulic Pump | 1 |
| 21***68 | Seal-O-Ring; (11.89-mm Id) | 2 |
| 22***04 | Seal-O-Ring; (Unit Injector Hydraulic Pump) | 1 |
254-0095 Pump & Mtg Gp-Unit Inj Hyd
| 21***68 | Seal-O-Ring; (11.89-mm Id) | 2 |
| 22***04 | Seal-O-Ring; (Unit Injector Hydraulic Pump) | 1 |
| 25***95 | Pump & Mtg Group-Unit Inj Hydraulic | 1 |
268-1839 Pump Gp-Fuel Injection
| 19***38 | Elbow Assem. | 0 |
| 23***43 | Regulator Group-Fuel Pressure | 1 |
| 26***39 | Pump Group-Fuel Injection | 1 |
205-1306 Regulator Gp-Fuel Pressure
| 20***06 | Name-Plate (Portuguese), Regulator Group-Fuel Pressure | 1 |
| 29***20 | Regulator As; (Fuel Pressure) | 1 |
| 6V***49 | Seal-O-Ring (Id=11.89mm); (11.89-mm Id) | 1 |
232-0343 Regulator Gp-Fuel Pressure
| 09***23 | Screw; (M3x0.5x10-mm) | 4 |
| 23***43 | Regulator Group-Fuel Pressure | 1 |
| 27***59 | Cabinet | 1 |
Implements
251-0763 Bar Gp-Tamper
| 25***63 | Bar Group-Tamper | 1 |
| 26***43 | Manifold As-Gas | 1 |
| 26***46 | Fitting | 8 |
268-6142 Manifold Gp-Fuel
| 26***03 | Film-Warning; (Electrocution Hazard, Read Omm) | 4 |
| 26***42 | Manifold Group-Fuel | 1 |
Lubrication System
191-0523 Adapter Gp-Oil Line
| 19***23 | Adapter Group-Oil Line; -Fuel Injection Pump-Unit Injector Hydraulic Pump | 1 |
| 21***66 | Seal-O-Ring; (Engine Oil) | 1 |
| 21***68 | Seal-O-Ring; (11.89-mm Id) | 1 |
133-1807 Base Gp-Oil Filter
| 13***07 | Base Group-Oil Filter | 1 |
| 14***54 | Bolt; (M8x1.25x105-mm) | 1 |
| 16***10 | Breather As; (Crankcase) | 1 |
222-5946 Breather Gp
| 13***07 | Base Group-Oil Filter | 1 |
| 1R***07 | Filter As-Engine Oil; (Advanced Efficiency) | 1 |
| 20***75 | Cap-Tube | 2 |
133-1806 Filter Gp-Engine Oil
| 13***06 | Filter Group-Engine Oil | 1 |
| 1R***07 | Filter As-Engine Oil; (Advanced Efficiency) | 1 |
| 20***75 | Cap-Tube | 2 |
189-5433 Filter Gp-Engine Oil
| 16***48 | Stud; (M8x1.25x40-mm, M8x1.25x17.5-mm) | 1 |
| 18***33 | Filter Group-Engine Oil | 1 |
| 22***10 | Hose-Disposal; (Fumes Disposal) | 1 |
220-1194 Fumes Disposal Gp
| 14***49 | Bracket | 1 |
| 14***50 | Tube As | 1 |
| 1S***63 | Plug; (Mounted-Bottom | 3 |
263-6680 Gauge Gp-Oil Level (Dipstick) -Engine
| 12***32 | Tube As-Oil | 1 |
| 26***80 | Gauge Group-Oil Level (Dipstick); -Engine | 1 |
| 3E***53 | Washer-Hard; (11x25x3-mm Thk) | 2 |
129-1133 Lines Gp-Engine Oil
| 12***33 | Lines Group-Engine Oil | 1 |
| 14***78 | Elbow, 90°,-6 Orb /-6 Orfs; (90°) (-6 Orbx-6orfs) | 1 |
| 15***18 | Tube As-Oil Drain | 1 |
159-0285 Lines Gp-Turbocharger Oil
| 14***07 | Plug; (Hex Head) (-6 Orb) (Current) (16***35 Friction Disc Interchangeable With 11***47) (Use All Of One Part Number) | 4 |
| 15***85 | Lines Group-Turbocharger Oil; (Turbocharger Oil) | 1 |
| 22***96 | Manifold-Oil; (Engine) | 1 |
237-8063 Manifold Gp-Engine Oil
| 20***97 | Pump Group-Engine Oil | 1 |
| 23***63 | Manifold Group-Engine Oil | 1 |
| 6V***15 | Bolt; (M10x1.5x75-mm) | 2 |
200-4497 Pump Gp-Engine Oil
| 20***97 | Pump Group-Engine Oil | 1 |
| 23***55 | Gasket | 1 |
| 26***43 | Core As-Engine Oil Cooler | 1 |
192-2981 Pump Gp-Engine Oil
| 18***77 | Pump Group-Engine Oil | 1 |
| 19***81 | Pump Group-Engine Oil | 1 |
| 7W***37 | Shaft-Oil Pump | 1 |
Machine Arrangement
277-4941 Common Ar
| 27***41 | Common Ar | 1 |
| 28***38 | Installation Ar-Engine | 1 |
Service Equipment And Supplies
265-6504 Film Gp -Electric Heat
| 26***04 | Film Group; -Electric Heat | 1 |
AP-755 serial number reference
The PIN plate sits on the paver frame near the operator station, usually on the right-hand side of the tractor unit under the console or on the frame rail below it; check the engine compartment door frame as a secondary spot if the console plate is missing. Read the first three characters of the PIN as the serial prefix (identifies model/generation), the next two as country/plant code, and the trailing digits as the sequential unit number.
| Prefix | Identifies | Notes |
|---|---|---|
| B3T | AP-755 track asphalt paver, sole documented generation | B3T00001 and up. Powered by the C7 diesel engine. Production window runs roughly 2006 to 2011. No separate lettered variant (no AP-755B/D) or additional prefix turned up in parts catalogs or manual listings, so B3T covers the full model run as documented. |
Frequently asked questions
What engine powers the Caterpillar AP-755?
The AP-755 runs the Cat C7, a 7.2-liter turbocharged inline-six producing 202 hp (151 kW) gross and 188 hp (140 kW) net at 2300 rpm. Some parts references list the same engine under its earlier 3126B designation, since the C7 carries over the same base block.
What is the operating weight of the Caterpillar AP-755?
Operating weight with screed installed is approximately 21,600 kg (47,600 lb). Actual weight varies with screed choice — AS3251C or AS4251C — and other attached options.
What replaced the Caterpillar AP-755?
Caterpillar did not carry the AP-755 forward under a direct lettered successor. It sits alongside the AP-655D in Cat's mid-2000s tracked paver lineup, and the broader paver line was later replaced by the bare-numbered AP600, AP655, AP1000, and AP1055 generation built on newer engine families. No documented one-to-one replacement model exists for the AP-755 specifically.
What AP-755 owners discuss
What's the propel/hydraulic setup on the AP-755 like, and what do techs say about it?
What engine issues come up most with the AP-755's C7?
The screed heaters keep giving trouble - is that a known issue on this machine?
Mat texture is inconsistent even though the augers and screed look fine - what's the usual cause?
What undercarriage wear should I expect on a tracked AP-755?
What should I check when buying a used AP-755?
Any electrical or sensor issues beyond the screed heaters?
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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