K 3500 Truck 4WD V8-6.6L DSL Turbo VIN 1 (2001)
Hydraulic Brake Booster: Service and Repair
Hydraulic Brake Booster Replacement
Notice: Hydraulic brake systems use two distinct and incompatible fluids. Power steering fluid is used in the hydraulic brake booster system. Brake
fluid is used in the master cylinder and brake pipes. Use extreme care when selecting brake system fluids, or seal damage can result.
Removal Procedure
1. Apply the parking brake.
2. Disconnect the inlet hose, the steering gear, and the return hoses from the booster assembly.
3. Remove the master cylinder.
4. Remove the stoplamp switch and the pushrod.
5. Remove the booster to bulkhead nuts.
6. Remove the booster assembly.
7. Remove the gasket.
Installation Procedure
1. Install the gasket.
2. Install the booster assembly.
Notice: Refer to Fastener Notice in Service Precautions.
3. Install the booster to bulkhead nuts.
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Tighten the nuts to 36 Nm (26 ft. lbs.).
4. Install the stoplamp switch and the pushrod.
5. Install the master cylinder.
6. Connect the return hose, the steering gear, and the inlet hoses.
7. Bleed the hydraulic booster system.
