Description
109863X - TF-750 CAT COMPRESSOR (CATERPILLAR ENGINES)
PART NUMBER(S):
Fleet Products: 109863X (Remanufactured) | OE: 109861, 109863, 5001533, 5001534 109824, 5001533, 109864, 5001534, 065683 | CAT 118-2806, CAT 131-6680
DESCRIPTION:
Model: TF-750 CAT Air Brake Compressor Crankshaft: Straight M-20 Thd., 22 ToothSpline
Vehicles: Caterpillar 3406B, C10, C12, C15, C16, 3176 engines
• Cooling: Water-cooled head with air-cooled crankcase
• Drive Type: Gear-driven (crankshaft thread, Mack-style) Identical to 109142X except has End Cover Studs
• Mounting: Flange mount
• Air Inlet: Left (viewed from rear)
• Air Outlet: Left or Top (configurable)
- Cylinders: 2
- Bore x Stroke: 2.78 in x 1.87 in
- Flow @1250 RPM: 16.5 CFM
- Max RPM: 2400
- HP @1250 RPM /120 PSIG: 3.2 HP
- Min Coolant Flow @Max RPM: 2.5 gpm
- Min Unload Pressure: 60 PSIG
- Oil Pressure: 15 PSIG (idle & governed)
- Temp Range: 250°F inlet / 400°F discharge
Port Sizes (NPT)
- Water In / Out: 1/2-14
- Air Discharge: 1/2-14
- Governor: 1/8-27
- Oil Inlet: 1/8-27
Minimum Line Sizes
- Discharge: 1/2 in ID
- Coolant: 3/8 in ID
- Oil Supply: 3/16 in ID
- Oil Return: 1/2 in ID
- Air Inlet: 5/8 in ID
- Unloader: 3/16 in ID
• Lubrication: Engine oil fed
• Approximate Weight: 50 lbs
Applications:
What does this fit✔ CAT 3406 and C-series engines in Peterbilt, Kenworth, Freightliner, and Western Star trucks. Designed to meet high CFM air demand in long-haul, vocational, and off-highway applications where a TF-750 compressor is required.
CROSS-REFERENCE(S):
109863, 5001533, 5001534, 5002082, 5002713, 5002826, 5002983, 5007471, 5005421, 5005491, 0R8442, 0R5253, 164-7564, 139-9009, 102-9553, 109142, TF-750 CAT, NS750
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Port orientation is viewed from the rear; confirm left/top outlet match
✔ Flange nut torque: 80–100 ft-lbs; cap screws: 175–225 in-lbs
- Maintain minimum 2.5 gpm coolant flow.
- Do not exceed 2400 RPM. Replace all gaskets and fittings.
- Use correct discharge line size with continuous downward slope.
- Ensure oil lines are primed and leak-free before startup.
- Drain reservoirs and flush coolant and air lines before air system service.
Suggested torque
- Cylinder Head: 300–360 in-lb
- Inlet / Discharge Fittings: 175–225 in-lb
- Pipe Plugs: 35–270 in-lb (size dependent)
- Crankshaft Nut (Castle): 1200–1400 in-lb (100–120 ft-lb)
- Crankshaft Nut (Metric): 2640–3048 in-lb (220–254 ft-lb)
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
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Warranty Information
