This Bobcat MT85 Service Manual (OEM #7274811enUS) stays on one machine: your Mini Track Loader, with factory procedures running from the Kubota D902-EB engine through the hydrostatic drive system. Expect hydraulic and hydrostatic schematics with full symbol glossaries, wiring diagrams for the complete electrical system, exploded views across 10 sections, and troubleshooting charts for hydraulics, hydrostatics, and the engine. The specs section runs 9 pages deep: dimensions, capacities, hydraulic connection torques, and a full technical service guide. Torque the hydrostatic motor mounting bolts to 136 N·m (100 ft-lb) with Loctite 242, and set hydraulic pump mounting bolts to 71–79 N·m. Numbers like these separate a proper rebuild from a comeback job. Your machine is down, so get the factory answer on the first try. It's bookmarked by section and keyword-searchable; pull it up on your tablet at the machine and start wrenching.
What's Inside This Bobcat MT85 Manual
| System | Pages | Key Topics |
|---|---|---|
| Maintenance Safety | 3-4 | Correct (Never Service the Bobcat Mini Track Loader Without Instructions), Safety Alert Symbol, Warning |
| Safety and Maintenance | 17-62 | Lifting and Blocking the Mini Loader (Procedure, Four Point Lift), Lift Arm Support Device (Installing, Removing) |
| Hydraulic System | 63-132 | Hydraulic System Information (Glossary of Hydraulic / Hydrostatic Symbols, Troubleshooting) |
| Hydrostatic System | 133-186 | Hydrostatic System Information (Troubleshooting, Description), Hydrostatic Motor (Description, Removal and Installation, Parts Identification, Disassembly, Inspection, Assembly) |
| Drive System | 187-222 | Parking Brake (Description, Handle Removal and Installation, Cable Removal and Installation, Cable Adjustment, Linkage Assembly Removal and Assembly, Brake Pin Lubrication) |
| Mainframe | 223-250 | Bob-Tach (Removal and Installation, Seal Removal and Installation, Lever and Wedge Disassembly and Assembly) |
| Electrical System and Analysis | 251-291 | Electrical System Information (Glossary of Electrical Symbols, Fuse and Relay Location / Identification, Troubleshooting, Solenoid Testing) |
| Engine Service | 292-371 | Engine Information (Description, Specifications, Torque Values, Troubleshooting, Engine Removal and Installation, Engine Mount Replacement, Compression - Checking) |
| Specifications | 372-393 | Mini Track Loader Specifications (Dimensions, Performance, Controls, Engine, Hydraulic System, Electrical, Drive System, Capacities, Tracks, Ground Pressure) |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Hydrostatic Motor Mounting Bolts (Torque w/ Loctite® 242) | 136 N•m (100 ft-lb) | p. 381 |
| Hydraulic Pump Mounting Bolts | 71 - 79 N•m (52.5 - 58.5 ft-lb) | p. 381 |
| Hydraulic Filter (Type) | Full flow replaceable, 10-micron synthetic media element | p. 377 |
| Hydraulic Filter (Replacement Interval) | Service filter at first 50 hours, then as scheduled | p. 28 |
| Hydraulic Reservoir Breather Cap (Replacement Interval) | Service filter at first 50 hours, then as scheduled | p. 28 |
| Hydraulic Hoses and Tubelines (Check/Replacement Interval) | Every 50 Hours | p. 27 |
| O-ring Face Seal Connection (Torque for 1/4" Tubeline) | 18 N•m (13 ft-lb) | p. 384 |
| Battery (Specification) | 12 volt - 540 CCA @ -18°C (0°F) | p. 377 |
| Battery (Maintenance Interval) | Every 100 Hours | p. 27 |
| Drive Belts (Check/Replacement Interval) | Every 100 Hours | p. 27 |
| Drive Belt (Tension Movement) | 8,0 mm (5/16 in) movement with 66 N (15 lbf) of force | p. 173 |
| Drive Belt (Hydrostatic) (Check/Replacement Interval) | Every 500 Hours Or Every 12 Months | p. 28 |
Bobcat MT85 Common Problems This Manual Covers
Hydraulic drive feels sluggish, or the loader stops lifting under load
Check hydraulic fluid level; the system holds 20.0 L (5.3 U.S. gal). Inspect the 10-micron filter, due at 50 hours initially then every 500 hours or 12 months (page 28). If fluid and filter check out, test hydrostatic drive belt tension at page 173: deflection should be 8.0 mm (5/16 in) with 66 N (15 lbf) of force applied.
Manual Section: Hydraulic System TroubleshootingTrack slips off the undercarriage; the machine wanders or loses traction on one side p. 133
Inspect track tension and all undercarriage fasteners for looseness before checking anything else. Mis-tensioned tracks are the top cause of derailing on compact loaders. If tracks are adjusted and the machine still pulls to one side, work through Hydrostatic System troubleshooting at page 133. Verify drive belt deflection: 8.0 mm (5/16 in) with 66 N (15 lbf) applied.
Manual Section: Hydrostatic System TroubleshootingEngine won't crank, or turns over slowly in cold weather and won't start
Measure battery voltage; the spec is 12V, 540 CCA at -18°C (0°F). Check cables and terminals for corrosion at every 100-hour service (page 27). If the battery is good, inspect the 25-amp starter fuse on page 265. Test alternator output: it should read above 35 amps (page 272) and between 13.9 and 14.7 volts (page 273).
Manual Section: Electrical System TroubleshootingOil pressure and coolant temperature gauges both peg out; the machine shuts down intermittently
Start at the instrument cluster wiring and ground connections. Simultaneous oil pressure and coolant faults almost always trace to a shared ground or sensor issue, not a true double failure. Check coolant level and test the radiator cap: it should hold 90 kPa (0.9 bar) (13 psi) per page 380. Verify wiring grounds using the diagram at page 253.
Manual Section: Engine TroubleshootingHydraulic hose or fitting seeps fluid, with power loss and wet spots under the machine p. 63
Examine every hose and tubeline for cracks, chafing, and wet seepage at 50-hour intervals per the maintenance schedule on page 27. When replacing O-ring face seal fittings, torque 1/4-inch connections to 18 N•m (13 ft-lb) per page 384. Trace the full circuit on the hydraulic schematic before condemning a component.
Manual Section: Hydraulic SystemFrequently Asked Questions
How do I start a Bobcat MT85 in cold weather?
During cold weather (0°C [32°F] and below), do not operate the machine until the engine has run for at least 5 minutes at less than half throttle. This warm-up period is necessary for foot pedal operation and safe stopping, and you should not operate controls during this time. If temperatures are below -30°C (-20°F), the hydrostatic oil must be heated or kept warm.
What controls do I use to operate the Bobcat MT85?
One multifunction handle controls steering direction and speed. The joystick handles lift and tilt, while the front auxiliary (standard) works off fore and aft movement of a hand lever. A hand lever also sets engine speed, and a key-type starter switch handles starting.
Why won’t my Bobcat mini track loader start?
If the engine will not start, it could be due to various issues such as low battery capacity, bad electrical connections, a faulty starter motor, or low cranking speed. Other potential causes include a faulty stop control operation, plugged fuel line, or issues with the fuel injection pump. For a comprehensive list of causes, refer to the troubleshooting section on Page 60-10-5.
What should I check if the MT85 won’t start?
If the MT85 won't start, you should check for low battery capacity, bad electrical connections, a faulty starter motor, or low cranking speed. Additionally, inspect for a faulty stop control operation, plugged fuel line, or issues with the fuel injection pump. Other checks include air in the fuel system, restriction in the air cleaner, or problems with glow plugs.
What do I get after purchasing this Bobcat MT85 manual?
Immediate download of the complete 397-page searchable Service Manual. Open it on any device, whether that's a laptop at your desk or a phone in the field.
Can I print specific sections of this Service Manual?
Yes. The PDF carries no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Are hydraulic system diagrams in this Bobcat MT85 Service Manual?
Full hydraulic system diagrams are included, covering circuits, valve locations, and hydraulic component specs for the Bobcat MT85.
Document Quality
This document is a high-quality scanned PDF with an accurate OCR layer, allowing you to search and copy text throughout. The text is consistently crisp and easy to read, with no blurry or faded sections. Diagrams and illustrations are generally sharp; many schematics are vector-based, while photos are clear and labels are readable. Pages are clean, free of scan artifacts, stains, or skewed content. You will find numerous blank or filler pages, often containing only the Bobcat logo or page numbers.
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