Caterpillarchallenger
Caterpillar MTC765
Maintenance schedule, common problems & OEM parts breakdown
The Caterpillar MTC765 is Caterpillar's dealer-channel parts designation for the original Cat-badged Challenger MT765, a high-horsepower rubber-track row-crop tractor built for large-acreage tillage, planting, and grain-cart work. It runs a Caterpillar C9 diesel, an 8.8-liter turbocharged inline six (non-ACERT), rated at roughly 306 gross hp (228 kW), paired with a Cat-built 16-forward/4-reverse electronic powershift transmission. Operating weight sits near 13,390 kg (29,520 lb) on a two-track Mobil-trac rubber-belt undercarriage, with adjustable rear track gauge for different row spacings. Caterpillar built the MT765 from 2002 into 2004, in the window after it sold the Challenger brand and MT-series production rights to AGCO but kept supplying remaining Cat-built units through Cat ag dealers under the MTC parts prefix; it replaced Caterpillar's older four-track Challenger tractors in this horsepower class.
AGCO carried the Challenger nameplate forward as its own brand starting with the MT765B in 2005, keeping the Cat C9 block but adding ACERT emissions technology and raising output to roughly 320 hp; the C-series held the ACERT C9, then the D-series switched to an AGCO Power 8.4-liter engine for Tier 4 Interim, and the E-series moved to a Tier 4 Final AGCO Power seven-cylinder. So the non-ACERT C9 in the original Cat MTC765 only matches the A/B/C-era engines, not the later AGCO-engine generations. That split matters for parts buyers: MTC765 engine, fuel-system, and ECM parts do not interchange with the ACERT or AGCO Power generations, even though the Mobil-trac undercarriage and powershift transmission layout carried across most of the platform's life. Surviving MTC765 units are a small, low-volume slice of the used track-tractor market today, valued for cheap high-horsepower row-crop capability and for undercarriage parts commonality with later same-platform machines.
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 MTC765 specifications
Engine
| Engine model | Caterpillar C9 diesel, 8.8 L (537 cu in) turbocharged inline-six, non-ACERT (pre-Tier 3 emissions) |
| Displacement | 8.8 L (537 cu in), 6 cylinders, bore x stroke 112 x 149 mm (4.41 x 5.87 in), compression ratio 16.0:1 |
| Gross power | 306 hp (228.2 kW) at 2100 rpm, per factory test trim |
| Emissions tier | Predates nonroad Tier 3 requirements, which phased in for this horsepower class starting 2006-2008; the later AGCO-built successor adopted ACERT/Tier III emissions technology |
Weights
| Operating/shipping weight | 29,520 lb (13,390 kg), per factory test trim |
| Ground pressure | Not published in available spec sheets; confirm with your dealer or the service manual |
Dimensions
| Wheelbase | 96 in (243 cm) |
| Track gauge, adjustable rear axle | 60-88 in (152-223 cm) on the narrow-axle option; wider axle options were available. Exact range varies by configuration |
| Track belt width | 457 mm (18 in) standard; 356-762 mm (14-30 in) optional range across belt sizes |
| Transport length, width, height | Not confirmed for this specific model year in available spec sheets; confirm with your dealer or the service manual |
Performance
| Transmission | Cat PowerShift, 16 forward / 4 reverse, push-button control; a 30-speed creeper option was offered |
| Hydraulic system | Closed-center, pressure-and-flow-compensated, roughly 200 bar (2,900 psi); standard pump flow about 136-165 L/min (36-43.5 gpm), with a 223 L/min (59 gpm) high-flow pump offered as an option; 4 to 6 remote valves |
| Rear 3-point hitch lift capacity | Category III/IIIN, up to approximately 7,257 kg (16,000 lb). Figure not independently confirmed as specific to this exact model year — confirm with your dealer |
Service capacities (summary)
| Fuel tank, standard | 446.6 L (118 US gal) |
| Fuel tank, optional wide-axle tank | 673.7 L (178 US gal) |
| Engine oil capacity (with filter) | 30 L (7.9 US gal) |
| Hydraulic/transmission system (combined reservoir) | 182 L (48.1 US gal) |
| Cooling system capacity | Not published in available spec sheets; confirm with your dealer or the service manual |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
MTC765 fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Engine crankcase (with oil filter) | 30 L (7.9 US gal) | Cat DEO heavy-duty diesel engine oil, API CI-4 service class. SAE 15W-40 for normal and warm-climate operation; SAE 10W-30 for cold-weather starting. |
| Cooling system | Not published in available capacity references for this generation - confirm against the OMM or with a dealer before refill. | Cat ELC (Extended Life Coolant), organic additive technology, pre-mixed for freeze protection to about -38 C (-36 F). A lighter premix rated near -26 C is also referenced where extreme cold protection is not required. |
| Fuel tank | 446.6 L (118 US gal) | ULSD No. 2 diesel fuel meeting ASTM D975/EN 590. Switch to a No. 1 or winter-blend fuel, or add an anti-gel treatment, in cold climates. |
| Hydraulic system and transmission (combined reservoir) | 182 L (48.1 US gal) | Cat TDTO multi-purpose tractor hydraulic-transmission oil. SAE 10W-30 for general service; SAE 5W-30 where cold starts are routine. |
| Final drive - drive wheel hub, each side | 1.6 L (0.42 US gal) per side | Cat TDTO-equivalent gear lubricant. Straight SAE 30 in warm climates, SAE 10W where temperatures run cold. |
| Track mid-roller wheels, each | 0.25 L (0.07 US gal) per wheel | Same gear lubricant spec as the drive wheel hub - SAE 30 warm / SAE 10W cold, Cat TDTO equivalent. |
| Front idler wheel, each side | 0.5 L (0.13 US gal) per side | Same gear lubricant spec as the drive wheel hub - SAE 30 warm / SAE 10W cold, Cat TDTO equivalent. |
| Grease points (chassis and track linkage) | Spec only - no fill volume published. | Cat multipurpose grease (NLGI 2 lithium-complex, EP additive). Use a softer NLGI 1 or 0 grade in sustained sub-zero conditions. |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
Caterpillar MTC765 maintenance schedule
| Service interval | Tasks |
|---|---|
| Every 10 h |
|
| Every 250 h |
|
| Every 500 h |
|
| Every 1,000 h |
|
| Every 2,000 h |
|
| Every 4,000 h |
|
Servicing the MTC765 beyond the schedule
Predictive Maintenance & Fluid Analysis
Run scheduled oil sampling on the Cat C9 engine, powershift transmission, and hydraulic system to catch wear metals before they become failures. Track the Mobil-trac tension reading on the cab display over time; a slow drift off factory pressure flags accumulator or seal wear before a belt walks off. Watch front idler and midwheel hub oil levels closely: these hubs hold very little oil, so even a minor seal weep shows up fast and warns of bearing wear before it becomes an idler rebuild.
Corrective & Common Repairs
Leaking front idler and midwheel hub seals are the MTC765's most common undercarriage complaint; oil starvation quickly cooks the bearings, so treat any weep as urgent, not cosmetic. Powershift clutch fault codes often trace to worn connectors or low transmission oil rather than the clutch packs themselves, so check basics before pulling covers. On the Cat C9, boost or fuel-related faults are frequently turbocharger boot leaks or a clogged fuel/water separator, not injector failure. Inspect Mobil-trac belts regularly for chunking from road travel.
Overhaul & Rebuild Points
High-hour MTC765 units wear out through the undercarriage first: midwheel/bogie bearing sets, front and rear idler bearings, and drive sprockets are the standard rebuild package once track tension can no longer compensate for wear. On the powertrain side, expect a Cat C9 top-end and turbocharger overhaul, plus injector reconditioning, as the major engine milestone. Powershift clutch packs and the centershaft/PTO driveline U-joints are the other recurring rebuild points on machines with heavy road-transport hours.
Seasonal & Environment Servicing
Cold starts on the Cat C9 need verified glow/ether-start function and correct coolant freeze protection before winter fieldwork begins. Rubber Mobil-trac belts contract in cold weather, so recheck track tension after a hard freeze rather than trusting a warm-weather setting. Machines splitting time between field tillage and road transport need more frequent idler and midwheel hub oil checks, since road speed and heat accelerate seal wear. For off-season storage, de-tension tracks to prevent flat-spotting, stabilize fuel, and disconnect batteries.
MTC765 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-0716 | Filter As-Engine Oil | Lubrication service | Check fitment → |
Always confirm against your machine's serial number — cross-check any part in Heavy Parts AI before ordering.
MTC765 fault codes & troubleshooting
| Code | Meaning | Likely cause | What to do |
|---|---|---|---|
| E100 | Engine oil pressure sensor circuit fault or genuinely low oil pressure | Low oil level, worn oil pump, restricted supply passage, or a sensor signal outside the valid range | Stop the engine, check oil level and look for leaks, then verify actual pressure with a mechanical gauge before condemning the sensor |
| E110 | Engine coolant temperature sensor circuit fault or high coolant temperature | Low coolant level, blocked radiator or grille, failing thermostat, or a faulty sensor signal | Check coolant level and clean the radiator/grille first, then inspect sensor wiring and connector before replacing the sensor |
| E102 | Boost/intake manifold pressure sensor fault or abnormal boost reading | Restricted or dirty air filter, a leaking charge-air hose or clamp, or a failing turbo or sensor | Inspect the air filter and intake/turbo hoses for restriction or leaks before replacing the sensor |
| E94 | Fuel delivery/filter pressure sensor fault or low fuel pressure | Clogged fuel filter, air drawn into the fuel system, or a weak lift pump | Replace the fuel filter, bleed the fuel system, then check lift pump output pressure |
Codes and remedies are general guidance for this model family — always confirm with diagnostic tooling and your dealer before major repairs.
MTC765 attachments & work tools
Rear three-point hitch
Category III/IIIN rear three-point linkage with electronic control; a quick-hitch coupler is available. Rated lift capacity runs up to about 7,257 kg (16,000 lb) at the hitch point, though actual figures vary by hydraulic configuration.
Rear PTO
Independent rear PTO running at 1000 rpm. Exact power rating is not confirmed as specific to this model year - later Challenger generations on the same platform rate the PTO higher after an engine upgrade, so confirm the figure for your serial with your dealer. Pairs with the Category III hitch to drive PTO implements sized for this power class.
Swinging drawbar
Standard swinging rear drawbar for towed implements. Sized for high-draft primary tillage (chisel plows, disc rippers), planters, and grain carts matched to this roughly 230 kW-plus (300+ hp engine) belt-tractor class.
Auxiliary hydraulics / remote valves
Closed-center, pressure-and-flow-compensated hydraulic system at roughly 200 bar (2,900 psi). Standard pump flow is about 136-165 L/min (36-43.5 gpm), with a 223 L/min (59 gpm) high-flow pump offered as an option. A four- to six-valve remote package is available for hydraulically actuated implements such as folding tillage tools and air carts.
Mobil-trac belted undercarriage / belt width
Rubber-belted Mobil-trac undercarriage in place of wheels. Belt-width choices span roughly 406-762 mm (16-30 in) to match row spacing, flotation, and soil-compaction needs, and track gauge is adjustable for row-crop set-ups; exact width/gauge offerings vary by dealer configuration.
Factory auto-guidance
AUTO-GUIDE, a GPS auto-steer system co-developed by AGCO and Beeline, was offered as a factory or dealer-installed option on Challenger tractors of this platform. It targets tillage, planting, and spraying passes to cut overlap and skips; confirm exact option availability for this model year with your dealer.
Implement / work-tool class
As a row-crop belt tractor, work-tool pairing is drawbar- and PTO-based rather than loader-style bucket attachments. Typical tools are primary and secondary tillage implements, planters, and high-horsepower towed equipment sized to this tractor's roughly 300 hp engine class.
All MTC765 assemblies by section
Every catalogued assembly group for the Caterpillar MTC765. Open an assembly to preview the parts inside — full OEM part numbers are available in Heavy Parts AI.
Air Inlet And Exhaust System
173-6107 Elbow Gp-Air Inlet
| 13***53 | Stud; (M8x1.25x82.75-mm)(M8x1.25x82.75-mm) | 8 |
| 17***07 | Elbow Group-Air Inlet | 1 |
| 18***71 | Elbow-Air Inlet | 1 |
174-1590 Elbow Gp-Air Inlet
| 17***90 | Elbow Group-Air Inlet | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
| 20***60 | Elbow-Air Inlet | 1 |
165-4444 Manifold Gp-Exhaust
| 11***15 | Stud-Taperlock; (M10x85-mm Oal) | 12 |
| 16***98 | Manifold-Exhaust | 1 |
| 16***11 | Gasket | 6 |
171-4687 Manifold Gp-Exhaust
| 11***15 | Stud-Taperlock; (M10x85-mm Oal) | 12 |
| 16***98 | Manifold-Exhaust | 2 |
| 16***11 | Gasket | 6 |
193-3346 Turbocharger Gp
| 13***02 | Clamp As; (Turbine)(Turbine) | 1 |
| 16***63 | Clamp | 2 |
| 17***91 | Hose; (Wastegate) | 1 |
169-3121 Turbocharger Gp
| 16***21 | Turbocharger Group | 1 |
| 19***46 | Turbocharger Group | 1 |
| 1P***51 | Gasket; (Turbocharger) | 1 |
191-5518 Turbocharger Gp
| 19***94 | Turbocharger Group | 1 |
| 19***18 | Turbocharger Group | 1 |
| 1P***51 | Gasket; (Turbocharger) | 1 |
206-2947 Turbocharger Gp
| 13***02 | Clamp As; (Turbine)(Turbine) | 1 |
| 16***63 | Clamp | 2 |
| 17***20 | Hose; (Wastegate) | 1 |
206-4013 Turbocharger Gp
| 1P***51 | Gasket; (Turbocharger) | 1 |
| 20***47 | Turbocharger Group | 1 |
| 20***13 | Turbocharger Group | 1 |
191-5094 Turbocharger Gp
| 13***01 | Housing-Turbine | 1 |
| 13***02 | Clamp As; (Turbine)(Turbine) | 1 |
| 19***94 | Turbocharger Group | 1 |
Basic Engine
164-6100 Camshaft Gp
| 10***94 | Plate-Thrust | 1 |
| 10***09 | Gear-Camshaft; (100-Teeth) | 1 |
| 16***00 | Camshaft Group | 1 |
183-3649 Cover Gp-Cylinder Block
| 18***49 | Cover Group-Cylinder Block; -Rear | 1 |
| 20***87 | Breather As; (Crankcase) | 1 |
| 21***10 | Gasket | 1 |
189-6308 Cover Gp-Cylinder Block
| 18***08 | Cover Group-Cylinder Block | 1 |
| 5F***81 | Gasket To Flywheel Housing Drain Tube Assembly | 1 |
| 5F***59 | Flange | 1 |
166-1775 Cover Gp-Front Housing
| 06***55 | Seal-O-Ring (Id=47.22mm) | 1 |
| 12***57 | Washer; (10.85x19.3x1.27-mm Thk) | 2 |
| 13***22 | Stud | 2 |
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 |
216-3047 Cover Gp-Front Housing
| 06***55 | Seal-O-Ring (Id=47.22mm) | 1 |
| 06***97 | Cap-Oil Filler; (Engine Oil) | 1 |
| 12***57 | Washer; (10.85x19.3x1.27-mm Thk) | 2 |
164-6490 Cover Gp-Valve Mechanism
| 16***90 | Cover Group-Valve Mechanism | 1 |
| 20***39 | Fastener Assem. | 9 |
| 21***01 | Seal-Bulk; (23-Dm)(Valve Mechanism Cover) | 0 |
164-6148 Crankshaft Gp
| 15***39 | Bearing-Main; (Standard) | 7 |
| 16***47 | Crankshaft Assem. | 1 |
| 16***66 | Plate-Thrust | 2 |
204-9538 Cylinder Block As
| 0L***26 | Plug -13mm(.512 In.) Outside Dia. | 2 |
| 17***54 | Bolt-Hex Head; (M16x160mm) | 14 |
| 20***05 | Bearing-Sleeve; (Camshaft) | 2 |
221-3248 Cylinder Block As
| 0L***26 | Plug -13mm(.512 In.) Outside Dia. | 2 |
| 17***54 | Bolt-Hex Head; (M16x160mm) | 14 |
| 20***05 | Bearing-Sleeve; (Camshaft) | 2 |
161-3406 Cylinder Block Gp
| 0S***19 | Plug-Cup | 1 |
| 16***06 | Cylinder Block Group | 1 |
| 1W***07 | Sleeve | 2 |
204-9539 Cylinder Block Gp
| 03***53 | Seal-O-Ring; (08.92mm Id) | 1 |
| 16***24 | Seal-Liner | 6 |
| 19***62 | Liner-Cylinder Block | 6 |
220-1952 Cylinder Block Gp
| 03***53 | Seal-O-Ring; (08.92mm Id) | 1 |
| 16***24 | Seal-Liner | 6 |
| 19***62 | Liner-Cylinder Block | 6 |
201-2180 Cylinder Head As
| 17***88 | Seat-Valve | 12 |
| 17***90 | Seat-Valve | 12 |
| 17***37 | Sleeve-Injector | 6 |
210-5985 Cylinder Head As
| 17***88 | Seat-Valve | 12 |
| 17***90 | Seat-Valve | 12 |
| 21***85 | Cylinder Head As | 1 |
210-5984 Cylinder Head Gp
| 15***06 | Seal-O-Ring; (11.89mm Id) | 5 |
| 16***42 | Valve; (Intake) | 12 |
| 16***44 | Guide-Valve | 24 |
201-2181 Cylinder Head Gp
| 03***53 | Seal-O-Ring; (08.92mm Id) | 6 |
| 15***06 | Seal-O-Ring; (11.89mm Id) | 5 |
| 16***42 | Valve; (Intake) | 12 |
161-3405 Cylinder Head Gp
| 16***05 | Cylinder Head Group | 1 |
| 16***71 | Fastener Group-Cylinder Head | 26 |
| 18***15 | Gasket Assem. | 1 |
210-5987 Cylinder Head Gp
| 16***71 | Fastener Group-Cylinder Head | 26 |
| 18***15 | Gasket Assem. | 1 |
| 21***84 | Cylinder Head Group | 1 |
192-3833 Damper & Pulley Gp
| 15***36 | Pulley-Crankshaft; (8-Groove) | 1 |
| 16***21 | Damper Assem. | 1 |
| 19***33 | Damper & Pulley Group | 1 |
169-3539 Damper & Pulley Gp
| 15***36 | Pulley-Crankshaft; (8-Groove) | 1 |
| 16***39 | Damper & Pulley Group | 1 |
| 20***19 | Damper As | 1 |
202-0103 Drain Gp-Engine Oil
| 20***03 | Drain Group-Engine Oil | 1 |
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
| 6V***38 | Valve-Shutoff; (Engine Oil Pan Drain) | 1 |
202-2025 Drive Gp-Fan
| 10***26 | Retainer-Bearing | 1 |
| 11***38 | Plate; (Thrust) | 1 |
| 12***56 | Shaft-Fan | 1 |
167-0171 Fastener Gp-Cylinder Head
| 16***71 | Fastener Group-Cylinder Head | 1 |
| 18***63 | Bolt; (M16x2x180-mm) | 1 |
| 9X***68 | Washer; (17.5x30x3.5-mm Thk) | 1 |
169-3106 Fastener Gp-Engine
| 16***06 | Fastener Group-Engine | 1 |
| 4K***90 | Washer; (8.6x17.3x1.6-mm Thk) | 6 |
| 6V***19 | Bolt; (M8x1.25x40-mm) | 6 |
117-2794 Fastener Gp-Flywheel
| 11***94 | Fastener Group-Flywheel; (Flywheel) | 1 |
| 5P***47 | Washer (Bracket To Valve Support) | 8 |
| 9X***21 | Bolt; (Locking) (M16x2.0x45mm) | 8 |
116-4556 Fastener Gp-Front Housing
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 6 |
| 6V***36 | Bolt; (M12x1.75x70-mm) | 6 |
173-7123 Fastener Gp-Front Housing
| 17***23 | Fastener Group-Front Housing | 1 |
| 6V***17 | Bolt; (M8x1.25x30-mm)(Location Z) | 4 |
| 8T***00 | Bolt (M8x1.25x60mm); (M8x1.25x60-mm) | 1 |
166-1788 Fastener Gp-Front Housing
| 16***88 | Fastener Group-Front Housing | 1 |
| 6V***17 | Bolt; (M8x1.25x30-mm)(Location Z) | 5 |
| 8T***00 | Bolt (M8x1.25x60mm); (M8x1.25x60-mm) | 1 |
201-5534 Flywheel Gp
| 15***05 | Pulley-Rear | 1 |
| 16***87 | Gear-Flywheel; (134-Teeth)(Id 405.14mm) | 1 |
| 17***86 | Bolt; (M16x2x115-mm) | 8 |
145-9112 Flywheel Gp
| 14***53 | Flywheel As | 1 |
| 14***12 | Flywheel Group | 1 |
| 4N***14 | Gear; (113-Teeth)(Flywheel Starter) | 1 |
171-4684 Flywheel Gp
| 15***05 | Pulley-Rear | 1 |
| 16***56 | Flywheel As | 1 |
| 16***87 | Gear-Flywheel; (134-Teeth)(Id 405.14mm) | 1 |
155-7918 Gear Gp-Front
| 11***69 | Plate-Thrust | 1 |
| 11***72 | Bearing | 1 |
| 11***19 | Plate-Retaining | 1 |
155-7935 Housing Gp-Flywheel
| 06***55 | Seal-O-Ring (Id=47.22mm) | 1 |
| 15***35 | Housing Group-Flywheel | 1 |
| 1P***69 | Plug-Seal; (Flywheel Housing Drain) | 3 |
165-4446 Housing Gp-Front
| 16***46 | Housing Group-Front | 1 |
| 19***66 | Housing-Front | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
193-3293 Lifting Gp-Engine
| 19***93 | Lifting Group-Engine | 1 |
| 19***94 | Plate-Lift Eye | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 3 |
169-3113 Lifting Gp-Engine
| 16***85 | Plate-Lifting; (Rear) | 1 |
| 16***13 | Lifting Group-Engine | 1 |
| 5P***45 | Washer-Hard; (13.5x25.5x3-mm Thk)(Turbocharger Blanking Plate) | 3 |
187-3884 Mounting Gp-Fan Drive
| 18***84 | Mounting Group-Fan Drive | 1 |
| 18***87 | Support As-Fan | 1 |
| 18***56 | Block | 1 |
187-3076 Pan Gp-Oil
| 18***85 | Pan-Oil; (Engine Oil) | 1 |
| 18***76 | Pan Group-Oil; -Engine | 1 |
| 19***14 | Gasket-Oil Pan; (Engine) | 1 |
188-9141 Piston & Rod Gp
| 15***51 | Skirt-Piston | 1 |
| 16***72 | Bearing-Connecting Rod | 1 |
| 16***97 | Bolt | 2 |
177-7878 Piston Gp
| 17***78 | Piston Group | 1 |
| 18***41 | Piston & Rod Group | 6 |
206-6437 Plug Gp-Engine
| 20***37 | Plug Group-Engine | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 2 |
| 5P***17 | Adapter- To Logic Valve 1u***59 | 1 |
169-3105 Plug Gp-Engine
| 16***05 | Plug Group-Engine | 1 |
| 3D***24 | O-Ring - For Oil Drain & Level Plug (Items 3 & 7) | 1 |
| 6V***49 | Seal-O-Ring (Id=11.89mm); (11.89-mm Id) | 2 |
7e-2313 Drain Gp-Engine Oil
| 3K***60 | Seal Pilot Manifold On; Seal To Boom Check Valve Drain | 1 |
| 7E***13 | Plug Group-Oil Pan | 1 |
| 9X***30 | Plug-Drain; (Magnetic)(Engine Oil Pan) | 1 |
193-1726 Pulley Gp
| 10***26 | Retainer-Bearing | 1 |
| 11***38 | Plate; (Thrust) | 1 |
| 12***56 | Shaft-Fan | 1 |
175-3223 Pulley As-Idler
| 12***90 | Bolt; (M10x1.5) | 1 |
| 12***91 | Cover-Dust | 1 |
| 12***92 | Pulley As-Idler; (8-Groove) | 1 |
213-9321 Rocker Arm Gp -Intake
| 16***49 | Rocker Arm As | 1 |
| 18***65 | Screw-Adjustment; (M10x1.5-Thd) | 1 |
| 21***21 | Rocker Arm Group; -Intake | 1 |
213-9320 Rocker Arm Gp -Exhaust
| 16***47 | Rocker Arm As | 1 |
| 18***65 | Screw-Adjustment; (M10x1.5-Thd) | 1 |
| 21***20 | Rocker Arm Group; -Exhaust | 1 |
178-3899 Seal Gp-Crankshaft
| 11***21 | Seal Group-Crankshaft; (Front) | 1 |
| 17***99 | Seal Group-Crankshaft | 1 |
| 18***61 | Seal Group-Crankshaft; (Rear) | 1 |
171-4685 Support Gp-Engine
| 16***06 | Support-Rear | 1 |
| 17***85 | Support Group-Engine | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
185-5334 Support Gp-Engine
| 18***34 | Support Group-Engine; -Front | 1 |
| 20***44 | Support-Engine | 2 |
| 6V***44 | Bolt; (M16x2.0x35mm) | 4 |
163-2450 Valve Mechanism Gp
| 16***94 | Insert-Rocker Arm | 2 |
| 16***45 | Shaft As-Rocker Arm | 1 |
| 16***46 | Rocker Arm Group; (Exhaust) | 6 |
155-7927 Valve Mechanism Gp
| 13***79 | Rod-Valve Push; (Valve Push) | 12 |
| 15***27 | Valve Mechanism Group | 1 |
| 16***37 | Lifter As-Valve | 12 |
215-9571 Valve Mechanism Gp
| 16***45 | Shaft As-Rocker Arm | 1 |
| 16***59 | Spring | 6 |
| 16***69 | Stand; (End) | 2 |
Cooling System
188-3826 Cooler Gp-Engine Oil
| 18***26 | Cooler Group-Engine Oil | 1 |
| 20***93 | Gasket | 1 |
| 23***56 | Core As-Oil Cooler; (Engine) | 1 |
187-3066 Cover Gp-Water Outlet
| 18***07 | Seal-Integral | 1 |
| 18***36 | Cover | 1 |
| 18***66 | Cover Group-Water Outlet | 1 |
208-0440 Lines Gp-Water
| 16***24 | Hose | 1 |
| 19***57 | Gasket; (Water Regulator Housing)(Temperature) | 1 |
| 20***40 | Lines Group-Water; -Water Temperature Regulator | 1 |
165-4461 Lines Gp-Water
| 14***11 | Plug Group | 2 |
| 16***61 | Lines Group-Water; -Water Temperature Regulator | 1 |
| 16***24 | Hose | 1 |
205-4013 Plug Gp-Water Lines
| 20***13 | Plug Group-Water Lines; -Coolant | 1 |
| 20***34 | Plug-Cup; (73.38-mm Dia) | 2 |
| 7L***56 | Plug-Cup; (67.03-mm Dia) | 2 |
187-8982 Pump Gp-Water
| 06***69 | Stem | 1 |
| 14***88 | Seal As; (Water Pump) | 1 |
| 17***44 | Cover | 1 |
165-4478 Pump Gp-Water
| 16***78 | Pump Group-Water | 1 |
| 18***82 | Pump Group-Water | 1 |
| 2M***53 | Seal--To Seal Brake Housing To Main Housing | 1 |
208-0333 Pump Gp-Water
| 20***32 | Pump Group-Water | 1 |
| 20***33 | Pump Group-Water | 1 |
| 2M***53 | Seal--To Seal Brake Housing To Main Housing | 1 |
208-0332 Pump Gp-Water
| 14***88 | Seal As; (Water Pump) | 1 |
| 17***44 | Cover | 1 |
| 17***52 | Shaft As | 1 |
Electrical And Starting System
188-3506 Alternator Gp-Charging
| 11***79 | Alternator Group-Charging | 1 |
| 12***40 | Support-Alternator | 1 |
| 13***82 | Support-Alternator | 1 |
117-1379 Alternator Gp-Charging
| 03***12 | Screw-Forming; (10-24x0.5-In) | 3 |
| 10***86 | Stator As-Alternator | 1 |
| 11***79 | Alternator Group-Charging | 1 |
180-6004 Connection Gp-Electrical
| 10***29 | Stud; (M10x1.5-Thd) | 1 |
| 10***03 | Cap; (Stud Protector) | 1 |
| 18***04 | Connection Group-Electrical | 1 |
208-2385 Connection Gp-Electrical
| 10***29 | Stud; (M10x1.5-Thd) | 1 |
| 10***03 | Cap; (Stud Protector) | 1 |
| 20***85 | Connection Group-Electrical | 1 |
206-6446 Connection Gp-Electrical
| 20***46 | Connection Group-Electrical; -Air Inlet Heater | 1 |
| 20***96 | Cable As | 1 |
| 3T***88 | Terminal-Ring; (4-Ga, 7/16-In Screw) | 1 |
165-4468 Control & Mtg Gp-Engine Elek
| 10***28 | Spacer-Special; (12.7x26x28.7-mm Thk) | 2 |
| 16***68 | Control & Mtg Group-Engine Elek | 1 |
| 16***11 | Spacer | 2 |
196-4173 Control Gp-Engine Electronic
| 19***72 | Control Group-Engine Electronic | 1 |
| 19***73 | Control Group-Engine Electronic | 1 |
196-4172 Control Gp-Engine Electronic
| 18***72 | Screw-Pan Head; (No 8-32x9.52-mm)(Wax Coated) | 1 |
| 19***72 | Control Group-Engine Electronic | 1 |
| 7X***15 | Strap; (Grounding) | 1 |
201-0194 Heater Gp-Air Inlet
| 19***59 | Heater As-Air Inlet | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
| 20***94 | Heater Group-Air Inlet | 1 |
205-6289 Heater Gp-Jacket Water
| 18***36 | Cord As; -Jacket Water Heater | 1 |
| 20***89 | Heater Group-Jacket Water | 1 |
| 20***34 | Plug-Cup; (73.38-mm Dia) | 2 |
4p-1479 Heater Gp-Starting Aid
| 15***11 | Heater As; (Starting Aid) | 1 |
| 1U***46 | Sealant (For Locations A) | 0 |
| 4P***79 | Heater Group-Starting Aid; -Air Inlet Heater | 1 |
177-9816 Mounting Gp-Solenoid
| 17***16 | Mounting Group-Solenoid; -Starting Aid | 1 |
| 19***85 | Bracket | 1 |
| 3E***53 | Washer-Hard; (11x25x3-mm Thk) | 2 |
165-4469 Sensor Gp-Engine
| 11***85 | Seal-O-Ring; (13.94mm Id) | 2 |
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 2 |
| 13***67 | Seal-O-Ring | 1 |
169-3300 Sensor Gp-Speed -Timing
| 16***00 | Sensor Group-Speed; -Engine Timing | 1 |
191-6587 Sensor Gp-Temperature -Engine Oil
| 15***43 | Sleeve; (2.8-Dm) | 0 |
| 15***61 | Wedge-Plug Lock; (2-Pin) | 1 |
| 15***70 | Kit-Connecting Plug; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
130-9811 Sensor Gp-Temperature
| 13***11 | Sensor Group-Temperature; (Transmission Lubrication Oil) | 1 |
101-8936 Starting Motor Gp-Electric
| 10***36 | Starting Motor Group-Electric | 1 |
| 15***25 | Gasket | 1 |
| 20***24 | Starting Motor Group-Electric | 1 |
207-1524 Starting Motor Gp-Electric
| 03***23 | Bolt; (1/4-28x1-In) | 5 |
| 20***89 | Kit-Solenoid; (12-Volt)(Starting Motor) | 1 |
| 20***24 | Starting Motor Group-Electric | 1 |
175-2303 Switch Gp-Magnetic -Air Inlet Heater
| 01***80 | Lockwasher | 2 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 1 |
| 17***03 | Switch Group-Magnetic; -Air Inlet Heater | 1 |
209-1953 Wiring Gp-Electronic Control
| 00***35 | Protector | 1 |
| 10***20 | Plug As-Connector; (2-Pin) | 1 |
| 10***02 | Kit-Receptacle; (2-Pin)(Engine Sensor Wiring Harness) | 2 |
188-9869 Wiring Gp-Electronic Control
| 00***35 | Protector | 1 |
| 01***80 | Lockwasher | 2 |
| 10***20 | Plug As-Connector; (2-Pin) | 1 |
Engine Arrangement
177-1418 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
177-1420 Engine Ar
| 10***36 | Starting Motor Group-Electric | 1 |
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***94 | Fastener Group-Flywheel; (Flywheel) | 1 |
177-1416 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
194-4160 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
179-4956 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
177-1414 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
179-4952 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
179-4958 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
179-4954 Engine Ar
| 11***56 | Fastener Group-Front Housing; (Housing) | 1 |
| 11***27 | Cover Group-Front Housing; -Accessory Drive | 1 |
| 16***90 | Cover Group-Valve Mechanism | 1 |
177-1417 Engine Ar-Core
| 15***18 | Gear Group-Front | 1 |
| 15***27 | Valve Mechanism Group | 1 |
| 16***06 | Cylinder Block Group | 1 |
177-1415 Engine Ar-Core
| 15***18 | Gear Group-Front | 1 |
| 15***27 | Valve Mechanism Group | 1 |
| 16***06 | Cylinder Block Group | 1 |
194-4161 Engine Ar-Core
| 15***18 | Gear Group-Front | 1 |
| 15***27 | Valve Mechanism Group | 1 |
| 16***06 | Cylinder Block Group | 1 |
177-1419 Engine Ar-Core
| 15***18 | Gear Group-Front | 1 |
| 15***27 | Valve Mechanism Group | 1 |
| 16***06 | Cylinder Block Group | 1 |
177-1421 Engine Ar-Core
| 15***18 | Gear Group-Front | 1 |
| 15***27 | Valve Mechanism Group | 1 |
| 16***05 | Cylinder Head Group | 1 |
Frame And Body
206-5947 Mounting Gp -Solenoid
| 20***46 | Bracket | 1 |
| 20***47 | Mounting Group; -Solenoid | 1 |
| 3E***53 | Washer-Hard; (11x25x3-mm Thk) | 2 |
Fuel System
236-0962 Injector Gp-Fuel
| 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 |
217-2570 Injector Gp-Fuel
| 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 |
204-7454 Lines Gp-Fuel
| 03***42 | Elbow Hose Assembly To | 1 |
| 03***47 | Elbow-Filtered Fuel From Based Assembly | 2 |
| 12***33 | Clip | 1 |
189-3803 Lines Gp-Fuel Filter
| 00***15 | Insert | 1 |
| 03***42 | Elbow Hose Assembly To | 1 |
| 03***47 | Elbow-Filtered Fuel From Based Assembly | 1 |
172-5780 Pump Gp-Unit Injection
| 17***80 | Pump Group-Unit Injection | 1 |
| 19***20 | Bolt-Socket Head; (M8x1.25x63-mm) | 2 |
| 21***70 | Injector Group-Fuel | 1 |
166-1759 Pump Gp-Unit Injection
| 16***59 | Pump Group-Unit Injection | 1 |
| 17***80 | Pump Group-Unit Injection | 6 |
204-4944 Pump Gp-Unit Injector Hyd
| 20***44 | Pump Group-Unit Injector Hydraulic | 1 |
165-4450 Pump Gp-Unit Injector Hyd
| 03***50 | Elbow (Check Valve Drain Tube) | 1 |
| 15***06 | Seal-O-Ring; (11.89mm Id) | 3 |
| 15***07 | Seal-O-Ring | 2 |
Lubrication System
183-3700 Filter Gp-Engine Oil
| 03***53 | Seal-O-Ring; (08.92mm Id) | 1 |
| 18***56 | Base As-Oil Filter | 1 |
| 18***00 | Filter Group-Engine Oil | 1 |
206-6441 Filter Gp-Engine Oil
| 1R***16 | Filter As-Engine Oil; (Standard Efficiency) | 1 |
| 20***62 | Seal | 1 |
| 20***41 | Filter Group-Engine Oil | 1 |
187-3077 Fumes Disposal Gp
| 18***77 | Fumes Disposal Group | 1 |
| 19***31 | Bracket | 1 |
| 19***10 | Hose-Fumes Disposal | 1 |
201-5535 Fumes Disposal Gp
| 12***71 | Clamp-Hose | 1 |
| 1D***64 | Spacer; (15.8x21.34x25-mm Thk) | 1 |
| 20***35 | Fumes Disposal Group | 1 |
187-0710 Gauge Gp-Oil Level (Dipstick)
| 18***10 | Gauge Group-Oil Level (Dipstick); -Engine | 1 |
| 18***16 | Tube As-Guide; (Rh) | 1 |
| 19***33 | Gauge-Oil Level; (Dipstick, Engine) | 1 |
176-5328 Gauge Gp-Oil Level (Dipstick)
| 17***28 | Gauge Group-Oil Level (Dipstick); -Engine | 1 |
| 18***14 | Gauge-Oil Level; (Dipstick, Engine) | 1 |
| 18***16 | Tube As-Guide; (Rh) | 1 |
192-2833 Lines Gp-Engine Oil
| 03***34 | Seal-O-Ring | 1 |
| 19***33 | Lines Group-Engine Oil | 1 |
| 19***52 | Gasket | 1 |
188-3028 Lines Gp-Engine Oil
| 16***80 | Tube As | 1 |
| 18***28 | Lines Group-Engine Oil | 1 |
| 19***74 | Elbow-Outlet | 1 |
188-8840 Lines Gp-Turbocharger Oil
| 18***99 | Connector As | 1 |
| 18***40 | Lines Group-Turbocharger Oil | 1 |
| 18***41 | Hose As | 1 |
165-4465 Lines Gp-Turbocharger Oil
| 16***65 | Lines Group-Turbocharger Oil | 1 |
| 16***66 | Tube As | 1 |
| 18***98 | Connector As | 1 |
195-8098 Pump Gp-Engine Oil
| 19***98 | Pump Group-Engine Oil; (Engine Oil) | 1 |
| 21***22 | Pump As-Engine Oil | 1 |
| 21***46 | Gerotor Pump Group | 1 |
Operator Station
188-3507 Compressor Gp-Refrigerant
| 12***37 | Support-Compressor | 1 |
| 18***07 | Compressor Group-Refrigerant | 1 |
| 2Y***29 | Nut-Hard; (M10 X 1.5) | 2 |
MTC765 serial number reference
The PIN/serial plate is riveted to the main tractor frame on the front left side, near the front idler end of the frame rail, not on the cab or engine. Read it as a 3-letter root (AMS on the MTC765) followed by a run of digits; the first digit of that run is the model-year code (2 for 2002, 3 for 2003, 4 for 2004) and the digits after it are the production sequence for that year. On later full-length ISO-format plates this same string appears as the last 8 characters of a longer PIN, preceded by the plant and model code.
| Prefix | Identifies | Notes |
|---|---|---|
| AMS2 | MTC765 (Challenger MT700-series tracked ag tractor, Cat dealer-channel badge) - 2002 model year | Cat-AGCO 8.8 L C9 6-cylinder turbocharged diesel, non-ACERT (pre-Tier 3), gross rating around 228 kW (306 hp). Built in Jackson, Minnesota. First model year after Caterpillar transferred the Challenger tracked-tractor line to AGCO; still sold and parts-cataloged as a Cat MTC765 through Cat dealers. Model-year mapping for this prefix is not independently corroborated - confirm with dealer. |
| AMS3 | MTC765 - 2003 model year | Same 8.8 L C9 non-ACERT diesel and Jackson, Minnesota build as the 2002 run, gross rating around 228 kW (306 hp). Mid-production year of the Cat-badged MTC765. Model-year mapping for this prefix is not independently corroborated - confirm with dealer. |
| AMS4 | MTC765 - 2004 model year (final year sold/cataloged as Cat MTC765) | Same 8.8 L C9 non-ACERT diesel and Jackson, Minnesota build, gross rating around 228 kW (306 hp). Last model year before the tractor continued solely as the AGCO Challenger MT765B (a successor model, not part of the MTC765 line), which picked up the same AMS serial root with a 5 for 2005. |
Frequently asked questions
What engine does the Caterpillar MTC765 use?
A Caterpillar C9 diesel: an 8.8-liter (537 cu in) turbocharged inline six-cylinder, non-ACERT, rated at approximately 306 gross hp (228 kW). This is the original Cat-built C9, not the later ACERT version used in the AGCO-era MT765B and MT765C.
What is the operating weight of the Caterpillar MTC765?
Approximately 13,390 kg (29,520 lb) in factory test trim. Actual weight varies by track gauge, ballast, and attachment configuration, so treat this as a baseline rather than an exact figure for every unit.
What replaced the Caterpillar MTC765?
AGCO took over Challenger manufacturing and distribution in 2002 and carried the platform forward under its own brand. The direct successor is the AGCO Challenger MT765B, introduced in 2005, which kept the Cat C9 block but switched to ACERT emissions technology and raised output to roughly 320 hp.
What MTC765 owners discuss
What's the real-world reputation of the Mobil-trac rubber-belt undercarriage on this tractor, and where does wear show up first?
Traction is the biggest recurring complaint. In wet ground, silage, or on stubble, operators report the drive wheel slipping inside the belt rather than the belt gripping the soil; raising tire/belt pressure to the dealer's maximum helps some but doesn't fully cure it, and more than one owner has been told the machine simply isn't at its best in deep mud. On the wear side, the guide blocks down the center of the belt take the brunt of any stone or debris ingestion, and mid-rollers wear faster if they're the rubber-faced type rather than a steel-faced design. Front idler seals are a known weak spot on this earliest generation - a weeping seal lets grit into the bearing and accelerates failure, so check for oil staining around the idler hub. Belt life runs well into four-figure hours in normal field conditions but drops sharply in flinty or abrasive soil.
Which engine does this tractor actually run, and does it change across the production series?
This model runs a Caterpillar C9 diesel, an 8.8-liter turbocharged inline six rated at roughly 306 gross hp (228 kW) - the original non-ACERT version of that engine block, built before nonroad Tier 3 emissions rules applied to this horsepower class. The successor Challenger, sold only through AGCO's own channel starting the following model year, kept the same C9 block but added ACERT emissions technology and stepped output up to roughly 320 hp; later generations moved to different engine families entirely. Confirm which generation you have off the nameplate and serial prefix before ordering engine, fuel-system, or ECM parts, since they do not interchange between the non-ACERT and later versions.
The transmission is a Cat powershift with an inching pedal - what do owners say about how it's actually used and abused?
The gearbox itself is considered over-built and reliable if it's serviced on schedule (oil change and a dealer recalibration around the 1,000-hour mark). The most common owner-caused failure is treating the inching pedal like a clutch pedal during everyday draft work. It's meant strictly for hitching up to implements - feathering it under load to control ground speed overheats and prematurely wears the clutch packs. Let the powershift control system handle gear changes under load instead. Worth noting: heavier, larger-frame tractors in the same lineup are reported to be more transmission-failure-prone than this size class, so a well-serviced example with light inching-pedal use is a comparatively safe used buy.
Owners describe a 'clutch fault' warning with the transmission refusing to respond or dropping to neutral - what's usually behind it?
Most reports trace this to the inching-pedal position sensor rather than actual clutch hardware. The fault shows as a clutch or inching-pedal fault indication with the transmission unresponsive to the pedal; some owners have replaced the sensor more than once without full resolution, while others found the real fix was a full pedal recalibration through the dealer diagnostic tool rather than a parts swap. A recurring comment is that the calibration sequence needs the pedal held down longer than the printed procedure suggests before it takes. Because this sensor feeds the transmission safety interlock, have your dealer verify the calibration and confirm the fault clears rather than clearing the code and moving on.
Do the hydraulics differ across series, and what should I expect if something acts up?
Yes. This earliest generation runs a simpler Bosch-based implement hydraulic circuit; later generations moved to an electronically controlled system, which gives finer control of remotes but means a hydraulic complaint on those newer machines is more often a sensor or module fault than a worn pump or valve. On this generation, the service brakes share the implement hydraulic system: the implement pump charges a brake accumulator, and a priority valve near the hydraulic filter keeps that accumulator topped up. A soft or fading brake pedal on this platform is just as likely to be a starved accumulator or a sticking priority valve as it is worn linings. Have your dealer verify the brake accumulator charge and priority valve operation before condemning the brakes themselves.
Where does this tractor wear out mechanically that a buyer should specifically know about?
On this earliest final-drive design, the two support bearings on each side of the final drive sit close together and owners report them running hot and wearing prematurely under repeated heavy linkage work - multi-furrow ploughs, deep subsoiling, and similar high-draft mounted implements. A later-generation final drive widened that bearing spacing and is the safer used-market pick if the tractor's history includes heavy mounted-implement work. Separately, check the top bushes on the three-point-linkage lift arms; they wear steadily with use and are far cheaper to replace than a cracked link arm, which does happen if bush wear goes unchecked.
What should I specifically check before buying a used one of these?
Confirm the engine and emissions generation from the nameplate first, since power, service needs, and reliability reputation vary meaningfully by series. With the belt off, spin the fan and accessory-drive bearings by hand and check for play - a failed fan bearing can shed and go straight through the radiator. Locate the transmission oil cooler (mounted low and easy to overlook) and confirm it isn't caked with debris, since a blocked cooler runs the transmission hot. Ask for service records or oil analysis confirming genuine, correct-spec oil was used; the wrong oil is a known driver of high oil consumption on this platform. Walk the undercarriage for guide-block and mid-roller wear and check the idlers for oil weeping at the seals. Have the dealer pull any stored fault codes before you buy - an intermittent electronic fault is far cheaper to negotiate on price than to diagnose after the sale. Have your dealer verify any transmission, brake-accumulator, or final-drive bearing findings before final purchase.
Compiled from owner and technician discussions across the industry — experiences vary by serial range and machine history.
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