A/T Oil Pump - Service and Parts Information
87olds7SUBJECT: SERVICE AND PARTS INFORMATION ON NEW PUMP ASSEMBLY VANE RINGS
MODELS/YEARS: ALL 1981-87 MODELS WITH THM 200-4R
TRANSMISSIONS
NUMBER: 87-T-46
DATE: October 7, 1987
SECTION: 7A
This bulletin covers new THM 200-4R transmission oil pump assemblies with modular iron vane rings. The new design vane rings will reduce the possibility of vane ring distress.
Figure 1 - THM 200-4R Transmission:
Date of Production Change: (Figure 1)
Beginning June 17, 1987 (Julian Date 168) all 1987 THM 200-4R transmissions were produced with these new vane rings.
Figure 2 - 200-4R Pump Body Assembly:
Service Action: (Figure 2)
The new design pump vane rings (212) can be used on any 1981 through 1987 THM 200-4R transmissions. The past design vane rings can be used on any 1981 through 1987 THM 200-4R transmission, but it is recommended that the new iron pump vane rings be used when replacement of the vane rings becomes necessary.
Service Parts Information:
8657692 Pump Vane Ring (2 required)