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TURBO HYDRA-MATIC 2 0 0
7A1-23
NOTE: Burned clutch plates can be caused by incorrect
usage of clutch plates. Also, engine coolant in
transmission fluid can cause severe damage, such as
large pieces of composition clutch plate material peeling
off.
ENGINE COOLANT I N TRANSMISSION
If the transmission oil cooler, located in the radiator
assembly, has developed a leak allowing engine coolant to
enter the transmission, use the following procedure:
1. Remove transmission from car.
2. Disassemble transmission and replace all rubber type
seals (the coolant will attack the seal material causing
leakage).
3. Replace the composition-faced clutch plate assemblies
(the facing material may become separated from the steel
center portion).
4. Replace the nylon washers, speedometer gears and
governor gear (the nylon can swell and become damaged).
5. Replace the converter assembly. All the contaminated
oil cannot be poured out of the converter.
6. Throughly clean and rebuild transmission, using new
gaskets and oil filter.
7. Flush the cooler lines after the transmission cooler has
been properly repaired or replaced.
O N CAR SERVICE
The following parts can be serviced with the
transmission in the car. For part removal and installation
procedures not listed in this section, refer to the disassembly
and reassembly sections.
1. Governor Cover and Seals; Governor Assembly.
2. Intermediate Servo Cover and Seal; Intermediate
Servo Piston Assembly.
3. Oil Pan; Oil Screen Assembly (Refer to Changing
Fluid as outlined previous1 y).
4. Pressure Regulator parts.
5. Control Valve Assembly; Spacer Plate; Gaskets;
Manual Detent Roller and Spring Assembly; Throttle Lever
and Bracket Assembly; Manual Valve; Check Balls; 1-2
Accumulator Valve and Spring; Intermediate Band Anchor
Pin; Lo and Reverse Clutch Cup Plug and Seal.
6. Inside Detent Lever and Parking Brake Actuator Rod;
Manual Shaft; Manual Shaft to Case Seal; Parking Pawl;
Parking Bracket.
7. Rear Seal.
8. Vent Assembly.
9. Cooler Fittings
10. T.V. Cable
11. Oil Filler Pipe and "0" Rign Seal.
12. Speedometer Driven Gear Assembly.
GOVERNOR
Removal
1. Before raising the car, disconnect the negative battery
cable and remove the air cleaner.
2. Raise car on hoist and remove the exhaust to converter
bolts. Let the catalytic converter and exhaust pipe hang
down.
3. Place jack stand under transmission for support and
remove rear transmission support bolts.
4. Remove the drive shaft as outlined in Section 4A.
5. Let transmission drop down until sufficient clearance
is obtained to remove the governor.
6.Remove the governor retainer ring and cover. Discard
the two seal rings.
7. Remove governor assembly from case.
8. For inspection of the governor, refer to the overhaul
portion of this ection.
Installation
To install, reverse removal procedure.
CAUTION: Do not use any type of hammer to
install governor assembIy and cover into case.
Damage to case, governor or cover could result.
INTERMEDIATE SERVO ASSEMBLY
Removal and Installation
1. Before raising the car, disconnect the negative battery
cable and release the parking brake.
2. Raise car on hoist.
3. Place jack stand under transmission for support and
remove rear transmission support.
4. Let transmission drop down slightly and position a
50 mm (2") block on the right side of the transmission.
5. With transmission positioned to the left of the car,
remove the intermediate servo cover retaining ring.
6. Remove intermediate servo cover and discard seal
ring, seal ring may be located in case.
7. Remove intermediate servo piston and band apply pin
assembly.
8. Refer to Overhaul operations for inspection
procedure.
To install, reverse removal procedure.
PRESSURE REGULATOR VALVE
Removal
1. Referring to draining procedures, drain transmission
fluid from oil pan.
2. Remove oil pan and screen. Discard gasket.
3. Pushing on pressure regulator valve bore plug,
compress pressure regulator spring with small screwdriver or
Tool J 24684 as shown in Fig. 7A1-9.
4. Remove retaining ring, withdraw screwdriver or tool
slowly to release spring tension.
5. Remove pressure regulator bore plug, valve, spring
and guide. Refer to overhaul portion of this section for the
inspection procedure.
Installation
1. Install pressure regulator spring first, guide and then
valve, stem end out and bore plug hole side out.
2. Pushing with screwdriver or Tool J 24684 as shown
in Fig. 7A1-9 push bore plug past retaining ring groove by
compressing pressure regulator valve spring.
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