W250 3/4 Ton Pickup 4WD V8-318 5.2L VIN R 4-bbl (1982)
Brake Caliper: Testing and Inspection
With Caliper On Vehicle
Bendix Disc System 8 Lug Wheels
NOTE: The brake linings should be inspected any time the wheels and tires are removed.
1. Raise and support vehicle on a hoist or jack- stand.
2. Remove the tire and wheel, and visually inspect the outboard shoe linings at each end.
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Normally the highest rate of wear occurs here.
3. Inspect lining thickness on inboard shoe by looking down through caliper inspection hole.
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If the lining thickness at the thinnest point appears to be 0.030 (0.762mm) inch or less above the rivet heads, remove the shoes and linings.
4. Visually inspect the caliper for fluid leakage or other defects.
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If there is leakage, the caliper assembly should be overhauled.
Chrysler Disc System -- Type 2
Fig 8 Caliper Assembly
Check for piston seal leaks (evident by brake fluid in and around boot area and inboard lining) and for any ruptures of piston dust boot.
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If boot is damaged, or fluid is evident, it will be necessary to disassemble caliper assembly and install a new seal, boot, (and piston if damaged
or corroded).
Check the mating surfaces of the abutments on the caliper and adaptor.
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If corroded or rusty, clean surfaces with wire brush. Inspect braking surfaces of disc.
