K 2500 Truck 4WD V8-6.5L DSL Turbo VIN S (1998)
8. Remove the secondary piston from the master cylinder body.
Plug the rear port. Apply a small amount of air pressure to the front port.
9. Remove the seals.
10. Remove the spring retainer and the spring from the master cylinder body.
NOTICE: Use approved solvents only when cleaning or flushing the master cylinder and related components. The use of these liquids as cleaning
solvent will damage the rubber parts in the system if they have any trace of mineral oil or other contaminants.
11. Clean all the parts using the following procedure:
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Clean the metal parts in denatured alcohol.
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Clean the rubber parts in clean brake fluid.
12. Check the diaphragm for cuts, cracks, or swelling.
13. Inspect the cylinder bore for scoring or corrosion.
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Replace the master cylinder if corrosion is present.
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Do not attempt to hone the cylinder bore.
14. Check the reservoir for cracks.
ASSEMBLY PROCEDURE
1. Lubricate the grommets, seals, and the cylinder bore with clean brake fluid.
2. Use new seals when assembling the master cylinder.
3. Install the spring.
4. Install the spring retainer.
5. Install the primary seal on the secondary piston.
6. Install the secondary seal on the secondary piston.
