Caprice Wagon V8-305 5.0L (1986)
Forward clutch assembly, minus check ball in housing (619) Forward clutch piston assembly (623) Additional waved plate (627) Front internal gear
(636)
SERVICE ACTION
1984-87 Models built before August 4, 1986 (Julian Date 216):
If a vehicle equipped with a THM 200C transmission listed in SERVICE PARTS INFORMATION has a harsh PARK/NEUTRAL to DRIVE
engagement, install the Neutral Drive Shift Package.
1987 Models built on or after August 4, 1986 (Julian Date 216):
Models built after implementation of the feed/bleed system can be serviced with individual parts.
IMPORTANT:
When servicing the forward clutch, select the correct backing plate (627). Backing plate selection affects piston travel, shift feel and
clutch durability.
Backing plate selection (clutch fully assembled):
Figure 3
Apply an evenly distributed load in the direction indicated in Figure 3 to remove slack from the clutch assembly. Use 20 lbs (9 kg) of pressure against
the backing plate--excessive pressure will cause an inaccurate measurement. With the clutch assembly compressed, use a feeler gage to measure the
distance between the backing plate and snap ring. Correct backing plate travel is 0.7 mm-1.5 mm (0.028"-0.059").
SERVICE PARTS INFORMATION
1984-87 Models (excluding 1984-85 CZ, JY) built before August 4, 1986 (Julian date 216):
PART NUMBER DESCRIPTION
8638957
Neutral Drive Shift Package (contains
forward clutch assembly complete, front
internal gear and thrust washer)
1987 Models built on or after August 4, 1986 (Julian date 216):
