Issued by the factory under document number 30232, this 230-page Thomas T103, T133, 207-133 repair manual PDF is the shop book for these skid-steer loaders. Hydrostatic drive work takes up the largest share of the pages, covering pump and torque motor testing, removal and rebuild, while the final drive chapter handles the drive chain and axle assembly inside your chain case. Hydraulic schematics trace oil from the gear pump through the control valve to the lift and bucket cylinders, and wiring diagrams map the starting system, instrumentation and circuit breaker. Set the system relief valve to 2150 PSI (148 BAR), plus or minus 50 PSI, then tighten its locknut to 16-20 ft. lbs. (22-27 N.M.). Some nights it's you, the loader, and nobody to ask. Bookmarked, text-searchable and bought once, this copy stays yours for as long as you keep the T103 or T133 running.
What's Inside This Repair Manual
| System | Pages | Key Topics |
|---|
| Serial Numbers | 3 | Model Number, Serial Number |
| Safety Precautions | 4-5 | Machine Guards, Lifting Appliances, Compressed Air, Hand Tools, Electricity, Solvents |
| Service Techniques | 6-7 | Hoses, Tubes, Bearings, Pressure Testing |
| Hydraulic System | 8-43 | Hydraulic Circuit (Specifications, Control Functions, Maintenance Schedule) |
| Hydrostatic Drive System | 44-102 | Hydrostatic Pumps, Torque Motors |
| Final Drive | 103-123 | Lubrication, Drive Chain, Axle Assembly |
| Controls | 124-158 | Steering, Foot Pedals |
| Electrical | 159-174 | Wiring, Instrumentation, Battery, Starting System, Circuit Breaker |
| Main Frame | 175-191 | Quick-Tach Assembly |
| Engine | 192-217 | Engine Removal, Cylinder Head, Cooling System, Lubricating System, Fuel System, Air Intake System |
| Maintenance and Specifications | 218-230 | Preventative Maintenance Schedule, 50 Hour Service Check, Loader Specifications, Torque Specifications, Decals |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Compressed Air Pressure | 100 PSI (6.9 BAR) | p. 4 |
| System relief valve pressure setting | 2150 PSI (148 BAR) ± 50 PSI (± 3.4 BAR) | p. 21 |
| Relief valve locknut torque | 16-20 ft. lbs. (22-27 N.M.) | p. 23 |
| Front pump to rear pump mounting bolts torque | 27-31 ft. lbs. (1.9-2.1 Bar) | p. 55 |
| Hydraulic gear pump mounting bolts torque | 27-31 ft. lbs. (36.6-42 N.M.) | p. 56 |
| Wheel nuts torque | 100-110 ft. lbs. (135-149 N.M.) | p. 102 |
| Chain tension (free play) | 1/4-3/8 inch (6.4-9.5 mm) | p. 105 |
| Chain tightener clamp nuts torque (T103/T133) | 100-110 ft. lbs. (135-149 N.M.) | p. 102 |
| Wheel nut torque | 100-110 ft. lbs. (135-149 N.M.) | p. 119 |
| Foot pedal shield stop clearance | 1 inch (25.4 mm) | p. 143 |
| Seat bar distance from top of ROPS | 5.75 in. (146 mm) | p. 146 |
| Starter Motor No-load test Current | 90 A or less | p. 161 |
