The Thomas 25G, 25GT parts catalog PDF (OEM ID 048343SP) breaks both mini-skid loaders down to the last pin and bushing across 29 pages of exploded views and part numbers. Lift arms, the Q-Tach plate, the axle and chain drive, and the track undercarriage with its sprockets, idlers and tension rod each get an exploded view, so you can identify a worn component and match it to its number before you call the dealer. A hydraulic schematic traces the valve assembly, dump valve, cooler and filter lines, while the electrical schematic lays out the harness, relays, key switch and oil temp light; park brake, control levers, exhaust and engine spare parts round out the book. Order the oil decal as 023307SP, and top up with the 10W30 API SE/CD it specifies. One missing part number can park a loader all week. Your bookmarked scan jumps to the right section, the order goes in, and the 25G is moving dirt again.
What's Inside This Thomas 25G, 25GT Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Liability Warranty | 2-3 | - |
| Decals | 4-6 | Wheel Mini-Loader, Track Mini-Loader, Warning Gasoline, Warning, Aux, Oil 10W30 API SE/CD |
| Mainframe | 7-10 | Louver Grey Cover, Battery Box Assembly, Filter in Tank, Fuel Cock, Oil Filler Breather, Counterweight, Fuel Tank, Dash Panel |
| Lift Arms | 11-12 | Lift Arm Comp, Cylinder Assembly, Hardened Bushing, Parallel Arm Welded Assembly, Tilt Support, Pin, Q-Tach Welded Assembly, Boom Support Assembly |
| Axle and Chain | 13-14 | Front Axle Assembly, Hub Assembly, Motor, Dust Cap, Bearing Cone, Bearing Cup, Tire, Wheel Bolt |
| Tracks | 15-16 | Front Axle, Front Sprocket, Front Track Sprocket, Coil Spring Kit, Tension Rod, Idler Assembly, Rear Track Sprocket, Wheel W/Roller Bearing |
| Park Brake | 17-18 | Grip, Brake Handle Assembly, Washer, Nylok Nut, Spring, Brake Pin Assembly, Grease Fitting, Brake Mount Assembly |
| Hydraulic Schematic | 19-22 | Valve, Tee, Hyd. Valve Assembly, Connector, Dust Plug, Dump Valve, Cooler, Filter |
| Control Levers/Dash Panel | 23-24 | Knob, Handle, Auxiliary Lever, Drive Lever, Choke Cable, Momentary Switch, Cable Mount, Hourmeter |
| Exhaust Complete | 25-26 | Bolt, Lock Washer, Flat Washer, Muffler Mount, Muffler, Muffler Shield |
| Electrical Schematic | 27-28 | Electrical Harness, Electric Fan, Relays, Relay Plugs, Positive Cable, Negative Cable, Oil Temp Light, Key Switch |
| Engine Spare Parts | 29 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine oil type | 10W30 API SE/CD | p. 5 |
Thomas 25G, 25GT Common Problems This Manual Covers
Thomas 25G mini-skid loader lift arm tilt cylinder, hardened bushing and pin part numbers hard to find
Check the Lift Arms exploded views on pages 11 and 12 and locate the tilt cylinder, hardened bushing and pin callouts on the parallel arm welded assembly. Read each part number from the matching parts list, and grab the Q-Tach welded assembly and boom support assembly numbers in the same pass before ordering pivot hardware.
Manual Section: Lift Arms p. 11Need correct coil spring kit, tension rod and idler assembly part numbers for track undercarriage rebuild
Check the Tracks exploded views on pages 15 and 16 and match the coil spring kit, tension rod and idler assembly callouts to the parts list. Verify the front track sprocket, rear track sprocket and wheel with roller bearing numbers in the same section so the whole undercarriage order goes out in one pass.
Manual Section: Tracks p. 15Hydraulic dump valve, cooler and filter part numbers hard to pin down from the hydraulic schematic
Check the Hydraulic Schematic parts diagrams on pages 20 and 21 and trace each hose from the pump to the hyd. valve assembly, dump valve and cooler. Match every tee, connector and dust plug callout to its parts list line, and confirm the filter number before you place the order.
Manual Section: Hydraulic Schematic p. 20Oil temp light, relays and electric fan part numbers needed to rebuild the electrical harness
Check the Electrical Schematic wiring diagrams on pages 27 and 28 and follow the electrical harness to each relay, relay plug and the electric fan. Match the oil temp light, key switch, positive cable and negative cable callouts to their part numbers before ordering, so the harness goes back together right the first time.
Manual Section: Electrical Schematic p. 27Engine oil filter, spark plugs and carburetor parts hard to match for a service kit
Check the Engine Spare Parts list on page 29 for the oil filter, spark plugs, dipstick, oil fill cap and carburetor components. Pull the oil seal and cylinder head gasket numbers there too if the engine is open. Fill with 10W30 API SE/CD, as shown on the oil decal on page 5.
Manual Section: Engine Spare Parts p. 29Front axle hub assembly bearing cone, bearing cup and dust cap part numbers needed on the wheeled machine
Check the Axle and Chain drivetrain diagrams on pages 13 and 14 and locate the hub assembly, bearing cone, bearing cup and dust cap callouts on the front axle assembly. Verify the motor, tire and wheel bolt numbers in the same section, and order cone and cup together so the pair matches.
Manual Section: Axle and Chain p. 13Frequently Asked Questions
What is the part number for the engine used in the Thomas 25G/25GT?
The engine used in the Thomas 25G/25GT is identified by part number 052340SP. p. 29
What is the part number for the 25-amp stator?
The 25-amp stator for the engine is part number 048186SP. p. 29
What is the part number for the primary air filter?
The primary air filter for the engine is part number 042417SP. p. 29
What is the part number for the muffler shield?
The muffler shield is identified by part number 049297SP. p. 26
What is the part number for the hourmeter?
The hourmeter for the control dash panel is part number 038761SP. p. 24
How quickly can I access this Thomas 25G manual after buying?
A single scanned PDF file of 29 pages, downloadable right after payment. Nothing ships, nothing waits in the mail.
Is printing allowed for this Thomas 25G Parts Catalog?
Zero restrictions. The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
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