1. Disconnect the battery negative cable assembly from the battery negative terminal. Refer to

   Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

2. Raise the vehicle. Refer to Vehicle Lifting and Jacking in General Information.
3. Support the vehicle with safety stands.
4. Remove the transmission oil pan and the transmission oil filter. Refer to Automatic Transmission Fluid and Filter Replacement



5. Remove the reverse boost valve bushing retainer ring.
6. Remove the following parts:

(Refer to



(206)	Pump Cover
(211)	Coiled Spring Pin
(211)	Coiled Spring Pin
(221)	Snap Ring
(223)	TCC Valve
(224)	TCC Valve Spring
(225)	TCC Valve Bore Plug
(226)	Reverse Boost Valve Bushing Retainer Ring
(227)	Reverse Boost Valve Bushing
(228)	Reverse Boost Valve
(229)	Pressure Regulator Spring Retainer
(230)	Pressure Regulator Spring
(231)	Pressure Regulator Valve
(232)	Valve Bore Plug
(232)	Valve Bore Plug
(238)	Isolator Pressure Regulator Spring

.)

6.1.	The reverse boost valve bushing

6.2.	The reverse boost valve

6.3.	The pressure regulator spring retainer

6.4.	The pressure regulator spring

6.5.	The pressure regulator valve

6.6.	The reverse boost valve bushing

Tools Required

J 36850

1. Install the pressure regulator valve. Refer to Special Tools . Retain the pressure regulator valve in position with J 36850
2. Pre-assemble the following parts: Refer to
   
   

2.1.	The reverse boost valve bushing

2.2.	A new reverse boost valve

2.3.	A new pressure regulator spring retainer

2.4.	The added isolator pressure regulator spring

2.5.	The pressure regulator spring

3. Install the pre-assembled parts into the pump bore.



4. Install the reverse boost valve bushing retainer ring while holding the reverse boost valve bushing in place. Ensure the retainer ring is in the groove.
5. Install the transmission oil pan and the transmission oil filter. Refer to Automatic Transmission Fluid and Filter Replacement
6. Remove the safety stands.
7. Lower the vehicle.
8. Connect the battery negative cable assembly to the battery negative terminal.

Tighten
Tighten the terminal bolt to 15 N·m (11 lb ft).