Description
TF-550 CATERPILLAR AIR BRAKE COMPRESSOR (CERTIFIED REMANUFACTURED)
PART NUMBER(S):
Fleet Products: 109139X (Reman) 109142X (TF-750) | OE: Casting# T111885 , 065465, 065424, 065684, 109138, 109139, 109139X, 109319, 109321, 109860, 109861, 109816, 108990, 5001522, 5001523, 5001773, 5001774, 5002032, 5002984, 5003228, 5003229, 5003230, 5005606, 5005790, 5007465, 800292
Caterpillar (CAT):
0R3845, 0R-3845, 0R8340, 0R-8340, 102-9551, 102-9553, 118-2798, 131-6679, FORD 1316679, 132-9813, 143-9185, 215-8055, 167-1288, MACK 745X5002984
Other: 170.5002983, 170.5002984, S-13753, S-17326, S-29353
DESCRIPTION:
Model: TF-550 CAT Compressor Crankshaft Straight
Vehicles: Caterpillar C-Series Engines — 3406E, C10, C12, C15, C16 Earthmoving Compactor 825C 826C
• Mounting: Flange mount
• Cooling: Water cooled
• Air Inlet: Left side
• Air Outlet: Left side or optional top discharge
• Drive Type: Engine driven
• Crankshaft Thread: Straight M-20 Threads
- Cylinders: 2
- Bore x Stroke: 2.78 in x 1.50 in
- Flow @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 & 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
- Oil Return (base): 1/2-14
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
• Includes: Installation gaskets
Applications:
Certified remanufactured air brake compressor designed for Caterpillar heavy-duty diesel engines. Built to OEM standards for durability and consistent performance. Supports multiple discharge orientations to fit specific engine configurations. Sold as remanufactured — core return required.
CROSS-REFERENCE(S):
0R3845, 0R-3845, OR3845, 0R4740, 0R8253, 0R8340, 0R-8340, 1029551, 102-9551, 109138, 109138X, 109139, 109139X, 109319, 109319X, 109321, 109816, 109860, 109861, 109861X, 109863, 1182798, 118-2798, 1316679, 131-6679, 131-6670, 131-6697, 1329813, 132-9813, 1439185, 143-9185, 1671288, 1705002983, 1827981, 1828061, 1855140, 2158055, 215-8055, 3166791, 3166801, 320010, 3298131, 3298141, 3370321, 4397851, 5001522, 5001522X, 5001523, 5001533, 5001773, 5001774, 5001788, 5002032, 5002032X, 5002652, 5002984, 5002984X, 5002984BXR, 5003228, 5003228X, 5003229, 5003230, 5003234, 5003236, 5005478, 5005491, 5005606, 5007466, 5011522, 5396-109139X, 5550029, 6475641, 65465, 65684, 704413AT, 7050029, 734X5002984, 7455002984X, 767653140353, 800256, 800292, 800724, 8421580, 84HDX, S17326, 0109138, 0109139, 0109319, 0109321, 065465, 065684, 0745X5002984, BX065465, BX109139, BX109319, BX109321, HDX109139X, MBI109139X, MID109139X, R109139, ZZ109139X. 1029551, 109861, 109861 (MUST REUSE OLD END COVER STUDS AND BRACKET), 1316679, 167-1288, 5001522, 5002032, 5002032 (REAR COVER ROTATED 180°), 5002984, 5003288, 5005606, 5005606 | 5002032 / 5005790 - REAR COVER ROTATED 180°, 5005790, 5005790 (REAR COVER ROTATED 180° B56), OR3845
A cross-reference listing means this part should be a suitable replacement for the numbers shown. Always confirm specifications before installation.
IMPORTANT INSTALLATION NOTES:
- Maintain minimum 2.5 gpm coolant flow.
- Do not exceed 3000 RPM.
- Use properly sized discharge line with downward slope.
- Ensure oil supply/return lines are unrestricted before startup.
- Drain all air reservoirs before service.
Suggested torque
- Cylinder Head: 440–500 in-lb
- Inlet / Discharge Fittings: 175–225 in-lb
- Pipe Plugs: 35–270 in-lb (size dependent)
- Crankshaft Nut (Castle): 1200–1440 in-lb (100–120 ft-lb)
- Crankshaft Nut (Metric): 2640–3048 in-lb (220–254 ft-lb)
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Warranty Information
