EXPERTEC Technical Service Bulletins (88-T-55)
Publication date: 1988-03-29Reference number: 88-T-55
EXPERTEC TECHNICAL SERVICE BULLETINS
TECHNICAL SERVICE BULLETIN
| Model(s):: | 1987-88 Oldsmobile THM 200-4R (MW9) rear wheel drive Cutlass Supreme and Custom Cruiser Models |
BULLETIN COVERS:
New pump bushing removal and installation tool. Use this tool when servicing a THM 200-4R transmission built on or after January 9, 1987 (Julian Date 009). See Fig 1 .
DATE OF PRODUCTION CHANGE
January 9, 1987 (Julian Date 009): Machined step added to pump bushing bore to prevent bushing "walk out".
SERVICE PARTS INFORMATION:
The above change is incorporated in all service packages shipped with the carton date code B7 or later, and will service all years and models. Refer to current GMSPO catalog for part number information.
SERVICE ACTION
Because of the stepped bore in the pump body, removal/installation procedures and tool for the pump body bushing have been changed. See Fig 2 . Use the new available tool from Kent-Moore (J 25019-20) for removal/installation.
Always take care not to scratch machined surfaces of the pump cover, protect by placing cloth or cardboard between machined surfaces and the tool as necessary. Apply grease to the new bushing and threaded parts of the tool.
SERVICE MANUAL REFERENCE
Refer to the THM 200-4R automatic transmission unit repair for pump assembly service procedures. Use Fig. Fig 3 to supplement information contained in your 1987 THM 200-4R Unit Repair Section.