Description
109451X - TF-550 CAT AIR BRAKE COMPRESSOR – REMANUFACTURED
PART NUMBER(S):
Fleet Products: 109451X (Remanufactured) | Replaces OE: Bendix: 065542, 109450 | GMC: 109451, 15987055, 5001940, 5007911, 5009283, 5011016, 5011016X | John Deere: RE506359, RE66033 | CAT: 0R8252, 0R9756, 126-8214, 149-4915
DESCRIPTION:
Model: Bendix Tu-Flo 550 (TF-550) CAT Air Brake Compressor
Vehicles: Caterpillar 3116, 3126, 3176, 3406, and ACERT pre-2007 engine applications
• Cooling: Water and air cooled
• Drive Type: Gear-driven, 11-tooth spline shaft
• Mounting: Flange mount, 31.5° angle
• Air Inlet Location: Top
• Air Outlet Location: Top
• No. of Cylinders: 2
• Bore x Stroke: 2.78 in x 1.50 in
• Displacement @ 1250 RPM: 13.2 CFM
• Max RPM: 3000
• HP @ 1250 RPM / 120 PSIG: 2.5 HP
• Min Coolant Flow @ Max RPM: 2.5 GPM
• Min Unload Pressure: 60 PSIG
• Oil Pressure: 15 PSIG idle and governed
• Temperature Range: 250°F inlet / 400°F discharge
• Port Sizes: 3/4"-16 UNF air inlet, 7/8"-14 UNF air outlet, 1/8" NPTF unloader, 1/2" NPTF water, 1/8-27 governor, 1/8-27 oil inlet, 1/2-14 oil return
• Minimum Line Sizes: 1/2 in ID discharge, 3/8 in ID coolant, 3/16 in ID oil supply, 1/2 in ID oil return, 5/8 in ID air inlet, 3/16 in ID unloader
Applications:
Used on Caterpillar-powered truck applications requiring a TF-550 flange-mount compressor with 31.5° mounting angle, 11-tooth spline drive, and top port configuration. The compressor supplies air for service brake and auxiliary pneumatic systems and is typically replaced due to reduced air output, oil carryover, overheating, or internal wear.
CROSS-REFERENCE(S):
0R-8252, OR8252, 0R-9756, OR9756, 1268214, 1494915, 5004118X, H109451X, BX109451X, 745-109451X, BW109451X, R955109451X
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Verify CAT 31.5° flange mount, 11-tooth spline shaft, and top inlet/outlet port configuration before installation
✔ Maintain minimum 2.5 GPM coolant flow and do not exceed 3000 RPM
✔ Use properly sized discharge, coolant, oil supply, oil return, air inlet, and unloader lines as specified
✔ Route the discharge line with proper downward slope, keep oil supply/return lines unrestricted, and drain reservoirs before service
✔ Suggested torque: cylinder head 440–500 in-lb; inlet/discharge fittings 175–225 in-lb; pipe plugs 35–270 in-lb; crankshaft castle nut 1200–1440 in-lb; crankshaft metric nut 2640–3048 in-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.
Warranty Information
