K 1500 Truck 4WD V8-4.8L VIN V (1999)
Hydraulic Fluid Accumulator: Service and Repair
REMOVAL PROCEDURE
CAUTION: The accumulator contains compressed gas. Always use the proper tools and follow the recommended procedures or personal injury may
result. Do not apply heat to accumulator. Do not attempt to repair an inoperative accumulator. Always replace an inoperative accumulator with a new
one. Dispose of an inoperative accumulator by drilling a 1.5 mm (1/16 inch) diameter hole through the end of the accumulator can, opposite the
O-ring.
CAUTION: Push rod removal is not recommended. Improper staking of the push rod to the Hydroboost reaction piston can result in a loss of brakes.
If the rod or seals require service, the entire unit must be replaced.
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Tools Required
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J 26889 Accumulator Piston Compressor.
1. Depress brake pedal at least 10 time in order to relieve pressure in the accumulator.
2. Remove the master cylinder from the hydraulic booster.
3. Place the J 26889 over the end of the accumulator.
4. Install the nut on the stud.
5. Depress the accumulator with a C-clamp. If the accumulator does not move with moderate pressure, remove the C-clamp and depress the brake
pedal ten times in order to relieve pressure in the accumulator.
6. Rotate the retaining ring (2) until either end of the ring is under the access hole (1).
7. Depress and hold the retaining ring (2) with a small tool inserted into the access hole (1).