Description
107981X – TF-550 CAT 31.5° TILT AIR BRAKE COMPRESSOR – REMANUFACTURED
PART NUMBER(S):
Fleet Products: 107981X (Remanufactured), Replacable with 109552X (TF-750) | Replaces OE: Automann: 170.AC5004613 | Bendix: 65273, 107979, 107980, 107981, 108193, 108194, 108236, 108237, 108730, 108987, 109136, 109253, 109367, 109522, 109882, 5000559, 065273, 065457, 065461, 065601, 65457, 65461, 65601, 109087, 109088, 109110, 109111, 109111X, 109551, 109552, 109626, 5000799, 5004611, 5004612, 5004613, 5004613X, 5004614, 5005412, 5005413, 5006716, 5010279, 800468, 800469, 801485 | CAT: 0R3391, 0R-3391, 4P0596, 4P-0596, 4P2419, 4P-2419, 4P3956, 4P-3956, 4P-3596, 4P-3986, 4P5435, 4P-5435, 6I1670, 6I-1670, 104-3823, 106-7851, 106-7852, 106-9089, 109-2996, 122-1713, 125-9562, 164-7557, 164-7558, 396-9942, 5001940 | GMC: 12546827, 15977688, 15978946 | Mack: 745X107981 | Navistar: 1694-005-C, 1694005C91, 1694005C92, 1696-864-C, 1696864C91, 1696864C92, 2003-252-C, 2003-253-C, 2003253C95, 2003253C96, 2003253C97 | Volvo: 3093850, 8166665
DESCRIPTION:
Model: Bendix Tu-Flo 550 (TF-550) CAT 31.5° Tilt Air Brake Compressor
Vehicles: Caterpillar 3116, 3406B, 3176, C7, 3126E, 3126, 3126B, 3114, industrial 3116/3126, and Caterpillar 960F, 950F, 950F II wheel loader applications
• Bore x Stroke: 2.78 in x 1.50 in
• Minimum Line Sizes: 5/8 in ID air inlet, 1/2 in ID discharge, 3/8 in ID coolant, 3/16 in ID oil supply, 1/2 in ID oil return, 3/16 in ID unloader
• Port Sizes: 1/2-14 NPT water in/out, 1/2-14 NPT air discharge, 1/8-27 NPT governor, 1/8-27 NPT oil inlet, 1/2-14 NPT oil return
• Air Inlet Port Location: Left, optional top
• Air Outlet Port Location: Left or top
• Mounting: Flange mount, 31.5° tilt
• Drive Type: Gear driven, 11-tooth spline shaft
• Construction: Water-cooled head, air-cooled block
• No. of Cylinders: 2
• Flow Rate: 13.2 CFM at 1250 RPM
• Maximum RPM: 3000
• Horsepower: 2.5 HP at 1250 RPM / 120 PSIG
• Minimum Coolant Flow: 2.5 GPM at maximum RPM
• Minimum Unload Pressure: 60 PSIG
• Oil Pressure: 15 PSIG at idle and governed
• Temperature Range: 250°F inlet / 400°F discharge
Applications:
Used on Caterpillar 3116, 3126, 3176, C7, 3406B, industrial engine, and wheel loader applications requiring a TF-550 compressor with 31.5° tilt and 11-tooth spline shaft 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):
OR3391, 1043823, 1067851, 1067852, 1069089, 1092996, 1221713, 1259562, 1647557, 1647558, 3969942, 500-1940, S-13761, S13761, 1096236, 2530-01-398-3384, 5004613BXR, 5004614X, 5011016X, 85102174, EL16280X, FLTBC113, FLTBC114
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 Caterpillar 31.5° tilt, 11-tooth spline shaft, flange mounting, and left/top port orientation 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
