C 2500 Truck 2WD V8-5.7L VIN R (1997)
Brake Master Cylinder: Vehicle Damage Warnings
NOTICES:
- Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact part number for that application.
General Motors will call out those fasteners that require a replacement after removal General Motors will also call out the fasteners that require
thread lockers or thread sealant UNLESS OTHERWISE SPECIFIED, do not use supplemental coatings (paints, greases, or other corrosion
inhibitors) on threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener torque and joint clamping
force, and may damage the fastener. When you Install fasteners, use the correct tightening sequence and specifications. Following these
instructions can help you avoid damage to parts and systems.
- Do not hone the master cylinder bore. When the brake master cylinder is overhauled, it is recommended that the cylinder body be replaced
rather than "cleaned up" by honing the bore. The master cylinder has a hard, highly polished "bearingized" surface, which is produced by
diamond boring followed by ball or roller burnishing under heavy pressure. Honing will destroy this hard smooth surface and cause rapid wear
of the rubber cups.
- Use approved solvents only when 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.
