Description
109287X – TF-750 CAT COMPRESSOR (CATERPILLAR 3306)
PART NUMBER(S):
Fleet Products: 109287X (Remanufactured) | OE: 109285, 109286, 109287, 109336, 065491 | CAT 1091318, 1105766, 1442907, 1647560, 1647561, 1647562, 0R3405, Mack 745X109287, 065491, 109285, 109336, 0R3405
DESCRIPTION:
Model: TF-750 CAT Compressor
Vehicles: Caterpillar 3306
• Cooling: Water/Air Cooled
• Mounting: Engine Drive, Flange Mount
• Air Inlet Port: Left
• Air Outlet Port: Left or Top (optional discharge ports)
• Shaft Type: 22-Tooth Spline Shaft
- 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
• Discharge Type: Threaded
Applications:
Fits Caterpillar 3306 engines in Class 8, commercial, and vocational fleet trucks. Engineered to deliver 16.5 CFM output for high-capacity air brake systems. Optional port configuration allows flexibility in routing under tight hood clearances.
CROSS-REFERENCE(S):
TF750, 065491, 109285, 109336, 5003648, 5005466, 5005415, H109287X, MID109287X
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:
- 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)
✔ Torque 80–100 lb-ft range typical
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
