B150 1/2 Ton Van L6-225 3.7L VIN E 1-bbl (1982)
Brake Caliper: Testing and Inspection
With Caliper On Vehicle
Fig 9 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.
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
Check the mating surfaces of the abutments on the caliper and adaptor.
If corroded or rusty, clean surfaces with wire brush. Inspect braking surfaces of disc.