For 1990-2009 cars

### Cleaning and Inspection Procedure

1. Inspect the front control valve body (306), for the following conditions:

• | Porosity

• | Cracks

• | Damaged machined surfaces

• | Chips or debris

2. Clean all the valves, springs, bushings, and the front control valve body (306) in solvent.
3. Dry all the parts using compressed air.

### Installation Procedure

1. Install the neutral relay valve (374) into the front control valve body (306).
2. Install the neutral relay valve spring (375).
3. Install the solenoid modulator valve bore plug (373) and the sleeve/bore plug retainer (372).
4. Install the solenoid B-1 modulator valve no. 2 (370).
5. Install the solenoid B-1 modulator valve no. 2 spring (371).
6. Install the solenoid modulator valve bore plug (373) and the sleeve/bore plug retainer (372).