Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Fluid Pump: All Technical Service Bulletins
Pump to Case Bolt and O-Ring Assembly - Revised
NUMBER:
86-B-89
GROUP:
7A-Automatic Transmission
DATE:
June, 1986
SUBJECT:
NEW PUMP TO CASE BOLT AND O-RING ASSEMBLY
MODELS:
1982-86 LIGHT DUTY MODELS WITH THM 700-R4 AUTOMATIC TRANSMISSIONS
Figure No.. 1 - THM 700-R4 Transmission Identification Information
All 1986 THM 700-R4 transmissions, beginning April 29, 1986, or Julian Date 119 (Refer to Fig. tire No. 1), are built using a new pump to case bolt
and o-ring assembly. The new bolt and o-ring assembly improves sealing and bolt torque retention.
Figure No. 2 - Case bolt and O-ring
If a leak or low bolt torque retention condition is experienced the new pump to case bolt and O-ring (Refer to. Figure No. 2) can be ordered for service
as an assembly, P/N 8654343. The O-ring can be ordered separately using P/N 8654341.
Refer to the appropriate Service Manual for bolt torque specifications, which will remain the same.
