PUMP GP-MAIN HYDRAULIC 1589066 - Caterpillar

Note: The magnetism between pilot exciter armature (22) and pilot exciter field (23) is very strong. The components may come off at the same time.
Slide spacer (24) off the rotor shaft.
Remove four bolts (25) which fasten stationary pilot exciter armature (22) to the generator.
Remove stationary pilot exciter armature (22) and rotating pilot exciter field (23) .Installation Procedure
Install The Exciter Field and Install The Exciter Armature
Illustration 13 g00855830
Generator With Inboard PM Pilot Exciter (22) Pilot Exciter Armature (23) Pilot Exciter Field (24) Spacer (25) Bolts
On generators with an inboard PM pilot exciter, perform the following procedure:
Slide stationary pilot exciter armature (22) and rotating pilot exciter field (23) over the rotor shaft.
Use four bolts (25) in order to fasten the stationary pilot exciter armature (22) to the generator.
Slide spacer (24) on the rotor shaft.
Illustration 14 g00855828
Generator With Outboard PM Pilot Exciter (20) Exciter Armature (21) Spacer
On generators with an outboard PM pilot exciter, perform the following procedure:
Slide exciter armature (20) on the rotor shaft.
As the spacer is slid on the rotor shaft, ensure that the spacer clears the exciter leads.
Carefully slide spacer (21) on the rotor shaft.
Illustration 15 g00855827
Generator with Outboard PM Pilot Exciter (18) Bolt (19) Exciter Field
On generators with an outboard PM pilot exciter, perform the following procedure:
Place exciter field (19) on the generator.
Use four bolts (18) to fasten the exciter field to the generator.
Slide exciter armature (15) on the rotor shaft.
Illustration 16 g00855826
Retainer and Exciter Armature (15) Exciter Armature (16) Retainer (17) Bolts
A retainer (16) is used to fasten the exciter armature (15) to the generator. Carefully pass the generator leads through the retainer's opening.
Use four bolts (17) to fasten the retainer to the generator.Note: When the exciter armature (15) is installed, the bolts (15) must be properly tightened.Apply 9S-3263 Thread Lock to bolts (17) before the bolts are installed. Refer to Table 1 for information regarding bolt torque.
Table 1
BOLT TORQUE    
Bolt Size     Torque    
5/16 inch    
35.4 N m (26.11 lb ft)    
3/8 inch    
55.8 N m (41.16 lb ft)    
Illustration 17 g00855822
Shroud and Exciter Field (12) Shroud (13) Exciter Field (14) Bolts
Use four bolts (14) to attach shroud (12) (if equipped) and exciter field (13) to the generator.
Illustration 18 g00855821
Generator With Outboard PM Pilot Exciter (9) Bolts (10) Rotating Pilot Exciter Field (11) Stationary Pilot Exciter Armature
On generators with an outboard PM pilot exciter, perform the following procedure:
Place stationary pilot exciter armature (11) and rotating pilot exciter field (10) on the generator.
Use four bolts to attach stationary pilot exciter armature (11) and rotating pilot exciter field (10) to the generator.
Illustration 19 g00855818
Generator With Outboard PM Pilot Exciter (6) Bolts (7) Mounting Assembly (8) Retainer
On generators with an outboard PM pilot exciter, perform the following procedure:
Slide mounting assembly (7) and retainer (8) over the rotor shaft.
Use four bolts to attach mounting assembly (7) and retainer (8) to the rotor shaft.
Various rectifier blocks and mounting hardware are used. The rectifier blocks and mounting plates must be installed after the exciter is attached. End By:
Connect the two generator leads