4-49. FOUNDATION BRAKESHOE AND BRAKEHEAD (cont)
CLEANING, INSPECTION, AND REPAIR
Drycleaning solvent P-D-680 is toxic and flammable.
Wear protective goggles and gloves and use only in
a well-ventilated area. Avoid contact with skin,
eyes, and clothes and don't breathe vapors. Do not
use near open flame or excessive heat. The flash
point is 100 - 138°F (38 - 59°C). If you become dizzy,
get fresh air and medical aid immediately. If contact
with eyes is made, wash your eyes and get medical
Compressed air used for cleaning purposes will not
exceed 30 psi (207 kPa). Do not direct compressed
air against skin. Use goggles or full face shield.
Clean parts in drycleaning solvent. Dry with compressed air.
Inspect spring, spacer, and screw for cracks, breaks, and damage.
Repair consists of replacement of damaged parts.
ASSEMBLY AND INSTALLATION
Position brakehead (10) on brake lever (11) and install screw (9), spacer (8), spring (7), washer (6), nut (5), and
cotter pin (4).
Tilt brakehead (10) up and slide brakeshoe (3) down from top of wheel and into brakehead.
Aline keyway in brakehead (10) and brakeshoe (3) and insert brakeshoe retaining key (2).
Apply air brakes and check brake piston travel. Adjust brake piston travel for a measurement of 3 inches by
turning slack adjuster head (1).