
AT-88 AUTOMATIC TRANSMISSION — Component Groups (Valve Body)
(c) Remove the sleeve, plunger, spring and primary regulator valve.
INSPECTION OF LOWER VALVE BODY
INSPECT VALVE SPRINGS
Check for damage, squareness, rust and distorted coils. Measure the spring free height and replace if less than that shown below.
Spring Free height mm (in.) Color
(1) Primary regulator 56.30 (2.2165) Blue
valve
(2) Low coast modula- 42.35 (1.6673) None
tor valve
(3) Intermediate 35.43 (1.3949) Red
modulator valve
(4) Lock-up relay 32.60 (1.2835) Green
valve
(5) Oil cooler by-pass 33.32 (1.3118) Yellow
valve
(6) Pressure relief valve 32.14 (1.2654) None
(7) Damping check ball 20.00 (0.7874) None
ASSEMBLY OF LOWER VALVE BODY
(See page AT-85)
1. INSERT PRIMARY REGULATOR VALVE AND
SPRING
(a) Set the valve body on the edge and drop in the valve,
large end first, and the spring.
(b) Make sure that the primary regulator valve fits flush
with the valve body.