Generator - CS-144 Service Parts

Bulletin No. T 87-6
File in Group 6D
Number 29
Corp. Ref. No. 616401
Date Sept. '86
SUBJECT: CS-144 GENERATOR SERVICE PARTS

MODELS AFFECTED: 1986 DE VILLE, ELDORADO, SEVILLE
The CS-144 120 amp generator used on all 1986 De Ville, Eldorado and Seville vehicles was originally serviced only as a complete assembly. DSIB 86-I-6, which should be destroyed, described the procedure for ordering remanufactured generators (P/N 10497111). Service parts for the CS-144 generator are now available through GMWDD and a listing of parts unique to this generator is provided below.

For diagnosis of the generator, refer to Section 6D of the Service Information Manual.

The CS-144 internal parts are similar to earlier models but are electrically different. Therefore, only service parts listed for the CS-144 should be used. There are also two basic design and assembly differences in the slip ring end bearing and drive end frame as compared to past models. These differences are as follows:

Slip Ring End Bearing Installation

A new slip ring end bearing (P/N 1989711) must be installed whenever the rotor is separated from the slip ring end frame.

Figure 1 - Generator's Rotor:

1. Install the slip ring end bearing onto the rotor shaft by pressing on the inner race until the stop is reached. (Refer to Figure 1.)

2. Guide the bearing into the slip ring end cavity being careful not to deform the tolerance rings (plastic rings) that are part of the outer race of the bearing.

3. Install the four thru-bolts from the slip ring end frame to the drive end frame.
Drive End Frame

The drive end frame components are held onto the rotor shaft with a split tapered collar, which is NOT removable. Therefore, to service any drive end frame components such as: the rotor, front bearing, pulley or fan, the drive end frame assembly (P/N 10456357) must be replaced.

Service Parts Unique To The CS-144 Generator

Description Part Number
Regulator 1116408
Rectifier Bridge 1989774
Stator Assembly 1989705
Ball Bearing - Slip Ring End 1989711
Slip Ring End Frame (includes ball bearing P/N 1989711) 1989706
Connector - Rectifier Bridge to Stator Lead 10497789
Brush Holder and Brush Assembly 1989702
Spring - Brush 1989659
Screw - Regulator Attaching (insulated) 1989699
Capacitor 1989703
Drive End Frame Assembly (includes rotor, ball bearings 10456357
drive end and slip ring end, pulley, and fan)
CS-144, 120 AMP Generator (remanufactured) 10497111
For warranty purposes, use Labor Operation Number J4080 at .8 hour and the appropriate ADD condition when repairing the generator. When replacing generator with a remanufactured unit (P/N 10497111), use Labor Operation Number J4100 at .6 hour, zone approval will now be required with this labor operation.