TURBO GP 3871153 - Caterpillar

Illustration 45 g01270673
Measuring shim pack thickness
Remove the bearing puller from the bearing cartridge.
Illustration 46 g01270678
Bearing height in inches
Record the height of the bearing that is stamped into the face of the new bearing cartridge.
Compare this height to the height on the original bearing face.
If the new height is less than the original height, subtract the difference from the original shim pack.
If the new height is greater than the original height, then add the difference to the original shim pack.Adjust the thickness of the shim pack according to the results. The adjustment ensures that the rotor rests in the correct position. Refer to the following examples.
Table 4
Example 1:    
New bearing height:     1.997    
Old bearing height:     1.995    
Difference:     .002    
Add .002 to shim pack    
Example 2:    
New bearing height:     2.029    
Old bearing height:     2.032    
Difference     .003    
Subtract .003 from shim pack    
Remove the O-ring (10) . Lubricate the O-ring (10) . Install the new O-ring (10) .
Insert the new bearing with the required number of shims (15) .Note: For the required number of shims, refer to Table 4.
Install the bearing installer. Refer to "Load Cell Type 1 Lower Bearing Removal and Installation" step 22, Illustration 33.
Tighten the 3/8 inch center bolt (28) of the bearing installer with a 9/16 inch socket.
Hand tighten the outer nut (30) of the bearing installer.
Insert the four feeler gauges (47) .
Hold the threaded shaft (32) with an 11/16 inch open-end wrench. Tighten the outer nut (30) with a 1 1/2 inch open-end wrench until the bearing seats completely.
Remove the bearing installer.
Remove the two guide pins (46) .
Insert the eight 5/16 inch socket cap bolts for the bearing.
With a torque wrench, tighten the eight socket cap bolts in a star pattern to 27 N m (20 lb ft).
Remove the feeler gauges (47) .
Clean the bolt threads of the upper retainer.Note: If the bolt head shows wear, replace the bolt. A smooth surface is very important for proper operation.
Place a single drop of Loctite 232 Low Strength Retaining Compound onto the threads of the bottom retainer bolt.
Install the 3/8 inch socket cap bolts for the upper retainer and rotor wheel using a 5/16 inch Allen wrench.
Tighten the upper retainer bolt (4) to 38 N-m (28 lb-ft ).
Reconnect any cables that were disconnected earlier.
Check continuity from the upper retainer bolt to the casting of the flywheel. There should be less than 5 ohms between the two.
Install the RPS sensor (39) with three screws (38) . Refer to Systems Operation, Testing and Adjusting, RENR9988, "Rotor Position Sensor (RPS) Assembly" for more information.
Always use an electrostatic discharge wrist strap when handling the RPS Sensor.
Connect the following parts: flywheel connector, upper bearing thermistor and sensor ribbon cable.
Go to the section "Bearings Change Post-Removal Steps".Bearings Change Post-Removal Steps
Perform the Hall Effect probe or the load cell procedure, depending on the system configuration.Hall Effect Probe System
Replace the metal shield over the flywheel upper bearing.
Replace the frame rail for the