A/T - New Pump to Case Bolt and O-Ring Improves Sealing

Number: 86-96

Section: 7A

Date: June 1986
Subject: 1982-1986 THM 700-R4 TRANSMISSIONS NEW PUMP TO CASE BOLT AND O-RING ASSEMBLY


MODEL AND YEAR: ALL MODELS USING THM 700-R4 TRANSMISSION


TO: ALL CHEVROLET DEALERS

FIGURE 1 - THM 700-R4 TRANSMISSION IDENTIFICATION INFORMATION:

All 1986 THM 700-R4 transmissions, beginning April 29, 1986, or Julian Date 119 (Refer Figure 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.

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 2) can be ordered for service as an assembly, Service Part Number 8654343, or the O-ring can be ordered separately, Service Part Number 8654341.

Refer to the appropriate Service Manual for bolt torque specifications, which are the same for both types of bolts.