GEAR-AUXILIARY DRIVE 7N5248 - Caterpillar

Note: Whenever the upper bearing is replaced, the lower bearing must be replaced as well.Removal Procedure
Table 1
Required Tools    
Tool    Part Number    Part Description    Qty    
A     191-5217     Guide Pin     1    
B     190-8385     Bearing Puller Gp     1    
Illustration 1 g00985643
(1) (1) Screw (2) Assembly (Rotor Position Sensor) (3) O-ring (4) Hex Bolt (5) Wheel (Rotor) (6) Spacer (7) Screw (8) Shipping Plug (9) Plug with an O-ring (10) O-ring (11) Assembly (Top Bearing) (12) Sensor (Vacuum) (13) Assembly (Bottom Bearing) (14) Spacer (15) Retaining Bolt (16) Mounting Hardware for the Drain (Charge) (17) Mounting Hardware for the Drain (Charge) (18) Drain (Charge) (19) Load Plate (20) Shims (Load Cell) (21) Load Cell and Base Plate Assembly (22) Hex Bolt (23) Spacer (24) Hex Bolt with Polished Head (25) Screw (26) O-ring (27) Assembly (Static Drain)
Shut down the System before attempting to remove the upper bearing. Refer to Testing and Adjusting, "System Shutdown" for the proper shutdown procedure.
Illustration 2 g00843202
Remove vacuum hose (30) from the system. This relieves the vacuum from the system.
Disconnect the yellow connector for the thermistor and the 19 pin instrument connector.
Remove three screws (1) .
Remove assembly (Rotor Position Sensor) (2) .
Remove O-ring (3) .
Remove bolt (4) .
Remove commutation sensor wheel (5) .
Remove spacer (6) .
Illustration 3 g00852370
Use four feeler gauges. Measure the gap that is between the bearing cartridge and the end plate. Take measurements at four locations. The measurements will be used during the installation of the new bearing. Record the results in the following table.
Table 2
Location    Measurement    
1        
2        
3        
4        
Loosen eight screws. Use quarter turns. Use a star pattern.
Install a 191-5217 Guide Pin in one of the eight bolt holes that are located in the bearing cartridge. This will prevent the bearing cartridge from turning.Note: The location for the connector for the cable (thermistor) must be maintained when the bearing is reinstalled.
Illustration 4 g00852427
190-8385 Bearing Puller Gp
Install the 190-8385 Bearing Puller Gp on the bearing cartridge.Reference: Refer to Illustration 4.
Turn center bolt (20) clockwise until the bolt contacts the bearing shaft.
Turn center bolt (20) in order to remove the bearing cartridge.
Illustration 5 g00863802
(35) Bearing Cartridge (36) O-ring (37) Brass Shim
Remove brass shim (37) from bearing cartridge (35).
Measure the old brass shim and record the measurement. Each bearing cartridge has a unique shoulder height. The height is stamped on the cartridge. The shims are added in order to adjust the height of the shoulder. Record the height of the shoulder.
Table 3
Bearing Measurements    
Old Brass Shim Thickness        
Old Shoulder Height        Save the brass shim. The shim may be used during the installation procedure.Installation Procedure
Table 4
Required Tools    
Tool    Part Number    Part Description    Qty    
A     191-5217     Guide Pin     2    
B     190-8379     Bearing Installer Gp     1    
C     7M-7456     Bearing