G 2500 3/4 Ton Van V8-6.5L DSL Turbo VIN F (1997)
-
Control valve assembly and the accumulator housing.
-
Position as shown on a clean surface.
-
Remove the valve trains and the accumulator pistons.
CAUTION: Some valves are under pressure and will spring out when the roll pins are removed. Cover the valve bores while removing
the roll pins to prevent personal injury.
-
Remove the blind hole roll pins with a modified drill bit.
-
Valves, springs, bushings, and pistons must be laid out on a clean surface in the exact sequence that they are removed.
Clean
-
All valves, springs, bushings, pistons, control valve body, and accumulator housing in a clean solvent.
-
Dry using compressed air.
Inspect
1. All valves, pistons, and bushings for:
-
Porosity.
-
Scoring.
-
Nicks.
-
Scratches.
2. Pistons for:
-
Seal damage.
3. Springs for:
-
Damaged or distorted coils.
4. Valve body casting and accumulator housing for:
-
Porosity.
-
Cracks.
-
Interconnected passages.
-
Damaged machined surfaces.
5. Solenoid, connectors, and switches.
6. PWM solenoid screen.
-
Inspect, clean, and replace if necessary.