Description
109139X – TF-550 CATERPILLAR AIR BRAKE COMPRESSOR – REMANUFACTURED
PART NUMBER(S):
Fleet Products: 109139X (Remanufactured), Replacable with 109142X (TF-750) | Replaces OE: Bendix: 065465, 065424, 065684, 109138, 109138X, 109139, 109319, 109319X, 109321, 109816, 109860, 109861, 109861X, 109863, 108990, 5001522, 5001522X, 5001523, 5001533, 5001773, 5001774, 5001788, 5002032, 5002032X, 5002652, 5002984, 5002984X, 5002984BXR, 5003228, 5003228X, 5003229, 5003230, 5003234, 5003236, 5005478, 5005491, 5005606, 5005790, 5007465, 5007466, 5011522, 65465, 65684, 800256, 800292, 800724, 0109138, 0109139, 0109319, 0109321, BX065465, BX109139, BX109319, BX109321 | CAT: 0R3845, 0R-3845, OR3845, 0R4740, 0R8253, 0R8340, 0R-8340, 1029551, 102-9551, 102-9553, 1182798, 118-2798, 131-6679, 131-6670, 131-6697, 1329813, 132-9813, 1439185, 143-9185, 1671288, 167-1288, 1827981, 1828061, 1855140, 2158055, 215-8055, 3166791, 3166801, 320010, 3298131, 3298141, 3370321, 4397851, 6475641 | Ford: 1316679 | Mack: 745X5002984, 0745X5002984, 734X5002984, 7455002984X | Casting#: T111885
DESCRIPTION:
Model: Bendix Tu-Flo 550 (TF-550) CAT Compressor Crankshaft Straight
Vehicles: Caterpillar C-Series 3406E, C10, C12, C15, C16, Earthmoving Compactor 825C and 826C applications
• Bore x Stroke: 2.78 in x 1.50 in
• 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
• 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 Location: Left side
• Air Outlet Location: Left side or optional top discharge
• Crankshaft Thread: Straight M20 threads
• Mounting: Flange mount, water cooled, engine driven
• 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
• Includes: Installation gaskets
Applications:
Used on Caterpillar 3406E, C10, C12, C15, C16, and selected Caterpillar earthmoving applications requiring a straight-crankshaft TF-550 compressor configuration. The compressor supplies air for heavy-duty service brake and auxiliary pneumatic systems and is typically replaced due to reduced air delivery, oil carryover, overheating, or internal wear.
CROSS-REFERENCE(S):
0R-4740, OR4740, 0R-8253, OR8253, OR8340, 1029553, 1316670, 1316697, 182-7981, 182-8061, 185-5140, 316-6791, 316-6801, 320-010, 329-8131, 329-8141, 337-0321, 439-7851, 647-5641, S-13753, S-17326, S-29353, 5550029, 704413AT, 7050029, 767653140353, 8421580, MID109139X, R109139, 170.5002983, 170.5002984, 5003288
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 straight M20 crankshaft thread, left/top discharge configuration, flange mounting, and installation gasket requirements 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 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
Warranty Information
