CS-144A GENERATOR SERVICE PART P/N LISTED FOR REPAIR

VEHICLES AFFECTED: 1986 DEVILLES, ELDORADOS AND SEVILLES

The CS-144 120 AMP generator used on all 1986 Deville, Eldorado and Seville vehicles was originally serviced only as a complete assembly. DSIB 86-6-108, 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 GM Parts 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.

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 labour 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 labour operation number J4100 at .6 hour. Zone approval will now be required with this labour operation.

CS 144 - SERVICE PART NUMBERS 1986 & 1987 MODELS -------------------

86-87E 87 G 87 H,C 86A,H,E 86 A,H USAGE: 3.8T 3.8L 3.8L 3.8L ------ QTY. 120 AMP 108 AMP 108 AMP 120 AMP REQ'D ------- ------- ------- ------- ----- Original Equipment 1101183 1101250 1105615 1105616 Generator

Remanufactured Generator 10463027 10463033 10496319 10497108 *Regulator 1 1116411 1116411 1116408 1116408 *Rotor Assembly 1 1989708 1989599 1989599 1989708 *Stator Assembly 1 1989705 1989705 1989705 1989705 *S.R.E. Frame 1 1989706 1989706 1989706 t989706 *Ball Bearing-S.R.E. 1 1989711 1989711 1989711 1989711 *Rectifier Bridge-Pos. 1 1989774 1989774 1989774 1989774 *Nut-Rectifier Bridge 3 453996 453996 453996 453996 *Connector-From Rect. 1 10497789 10497789 10497789 10497789 Bridge to Reg. Screw & Washer-Rect. 2 1988971 1988971 1988971 1988971 Bridge Attachment *Brush Holder & Brush Assy 1 1989702 1989702 1989702 1989702 *Spring - Brush 2 1989659 1989659 1989659 1989659 Screw - Brush Holder 1 1894586 1894586 1894586 1894586 Attachment(Ground) *Screw-Regulator 1 1989699 1989699 1989699 1989699 Attachment (Insulated) Terminal Package-Battery 1 1975471 1975471 1975471 1975471 *Capacitor 1 1989703 1989703 1989703 1989703 Screw-Capacitor & Rec. 1 1988970 1988970 1988970 1988970 Bridge Attachment *Frame-D. E. 1 1989601 1989601 1989601 1989601 Ball Bearing - D. E. 1 908419 908419 908419 908419 Plate - Ball Bearing 1 1977674 1977674 1977674 1977674 Retain. - D. E. Screw - Ball Brg.Retain. 3 1975736 1975736 1975736 1975736 Plate Attachment Collar-Shaft-Outside 1 1985999 1985999 1985999 1985999 D. E. Collar-Shaft-Inside 1 1986000 1986000 1986000 1986000 D.E. Collar - Shaft Between 1 1978064 1978064 1978064 1978064 Fan & Pulley Nut - Shaft-D.E. 1 1915172 1915172 1915172 1915172 Lockwasher - Shaft 1 1941978 1941978 1941978 1941978 Nut - D.E. *Thru Bolt 4 1989690 1989690 1989690 1989690 Pulley 1 1989104 1985964 1985964 1989104 Fan 1 1978026 1978026 1978026 1978026

* New Part S.R.E. = Slip Ring End D.E. = Drive End

86 H 86 H 86 G 3.0L 3.0L 3.8L T USAGE: 108 AMP 120 AMP 120 AMP ------ ------- ------- -------

Original Equipment 1105625 1105626 1105685 Generator

Remanufactured Generator 10456332 10497110 10497176 *Regulator 1116408 1116408 1116408 *Rotor Assembly 1989599 1989708 1989708 *Stator Assembly 1989705 1989705 1989705 *S.R.E. Frame 1989706 1989706 1989706 *Ball Bearing-S.R.E. 1989711 1989711 1989711 *Rectifier Bridge-Pos. 1989774 1989774 1989774 *Nut-Rectifier Bridge 453996 453996 453996 *Connector-From Rect. 10497789 10497789 10497789 Bridge to Reg. Screw & Washer-Rect. 1988971 1988971 1988971 Bridge Attachment *Brush Holder & Brush Assy 1989702 1989702 1989702 *Spring - Brush 1989659 1989659 1989659 Screw - Brush Holder 1894586 1894586 1894586 Attachment(Ground) *Screw-Regulator 1989699 1989699 1989699 Attachment (Insulated) Terminal Package-Battery 1975471 1975471 1975471 *Capacitor 1989703 1989703 1989703 Screw-Capacitor & Rec. 1988970 1988970 1988970 Bridge Attachment *Frame-D. E. 1989709 1989709 1989601 Ball Bearing - D. E. 908419 908419 908419 Plate - Ball Bearing 1977674 1977674 1977674 Retain. - D. E. Screw - Ball Brg.Retain. 1975736 1975736 1975736 Plate Attachment Collar-Shaft-Outside 1985999 1985999 1985999 D. E. Collar-Shaft-Inside 1986000 1986000 1986000 D.E. Collar - Shaft Between 1978064 1978064 1978064 Fan & Pulley Nut - Shaft-D.E. 1915172 1915172 1915172 Lockwasher - Shaft 1941978 1941978 1941978 Nut - D.E. *Thru Bolt 1989690 1989690 1989690 Pulley 1985964 1989104 1989104 Fan 1978026 1978026 1978026

* New Part S.R.E. = Slip Ring End D.E. = Drive End

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.