EDGE-CUTTING 3781337 - Caterpillar

Illustration 1.
Illustration 2.
Illustration 3.
Illustration 4.Procedure For Replacement Of Clutch For Axle Oil Cooler Pump
(If Equipped)
1. Remove the crankcase guard under the engine (belly guard), if equipped, following Service Manual procedures. The pump is located directly below the crankshaft pulley and damper.2. Disconnect the electrical harness from the pump clutch. For replacement of the Clutch, the technician may prefer to disconnect the 4 hoses from the pump, so that pump can be completely removed from the machine for clutch replacement. If hoses are disconnected, be sure to put identification marks on each hose for correct installation. Plug all lines and hoses to prevent contamination from entering the system, and to prevent fluid loss. When hoses are disconnected, be prepared to collect the fluid with a suitable container. Dispose of all fluids properly.
Technician may prefer to replace the clutch without disconnecting the hoses from the pump to avoid fluid loss. In this case, the clutch replacement must be performed under the machine.
3. Remove the two bolts (A) which hold the pump and adjustment straps to the large mounting Bracket. Refer to Illustration for Axle Oil Cooler Pump and Bracket.4. Remove the original Bracket for the pump. Install pump on new Bracket.5. Removal & Installation of Clutch for axle oil cooler pump.- Disconnect the electrical connection on the field coil.- Remove the shaft nut & lockwasher with a 13mm socket wrench and spanner wrench.- Remove the Hub/Armature from the clutch assembly.- Remove the shims from the hub/armature and shaft.- Replace the original clutch with the new 152-5409 ClutchAssembly.- The new clutch should should come partially assembled.- Install the rotor/pulley/field coil assembly (Field Rotor Assembly) on the pump shaft.- Align the hub keyway with the shaft key and slide the hub/armature onto the pump shaft.- Set the rotor/pulley to hub/armature air gap (clearance) at 0.020 to 0.040 inches (0.50 to 1.02mm) by adding or removing shims. Measure using a feeler gauge at 3 locations 120 degrees apart.- Install the lockwasher and shaft nut. Torque to 155 lb.in. (17.5 N m) using a torque wrench and spanner wrench.6. Install Bracket & Pump assembly on engine.7. Install and tighten original 9L2248 Belt for pump. Install belt for pump on pulley groove closest to the engine. Two outer grooves of crankshaft pulley are for the alternator belt set.8. Install hoses to axle oil cooler pump, if previously removed. Secure hoses properly to prevent rubbing.9. Attach electrical harness connection to cooler pump.10. Install crankcase guard (if equipped).List Of Axle Oil Cooler Machines
Machines Equipped with Axle Oil Cooler (Attachment)
The following is a list of Affected Product s/n's shipped from the factory with the Attachment Axle Oil Cooler Group. When performing this Belt Drive Update, these machines will need the new Bracket and new Clutch for the axle oil cooler pump. However, the new crankshaft pulley and bolts are not needed. Refer to Note D.