Hino 600, Руководство по ремонту, Страница: 363 / 451

SERVICE BRAKE (FULL AIR BRAKE) BR02–85
NOTICE
If you remove cotter pins from a slack adjuster during maintenance
and service procedures, Meritor recommends that you install clevis
pin retainer clips at assembly.
(3) Inspect clevis pin retainer clips or cotter pins for wear or damage.
Replace worn or damaged retainer clips or cotter pins. Do not reuse
clevis pin retainer clips. Always replace used retainer clips with new
ones. Discard used clips.
! WARNING
Do not operate the vehicle with the brake drum worn or machined
beyond the discard dimension indicated on the drum. The brake sys-
tem may not operate correctly and damage to components and seri-
ous personal injury can result.
(4) Use the following procedure to inspect the brake drums.
a.
Check the brake drums for cracks, severe heat checking, heat
spotting, scoring, pitting and distortion. Replace drums as
required. Do not turn or rebore brake drums, which decreases the
strength and heat capacity of the drum.
b. Measure the inside diameter of the drum in several locations with
a drum caliper or internal micrometer. Replace the drum if the
diameter exceeds the specifications supplied by the drum manu-
facturer.
(5) Check dust shields for wear and damage. Repair or replace worn or
damaged parts as necessary.
3. RELINE THE BRAKES
! CAUTION
Reline the brakes when the lining thickness is 0.25-inch (6.3 mm) at
the thinnest point. The rivets or bolts must not touch the drum. Dam-
age to components will result.
Meritor recommends that you replace springs, rollers, camshaft bush-
ings and anchor pins at each reline.
Reline the brake when the lining thickness is 0.25-inch (6.3 mm) at
the thinnest point.
Replace shoe retainer springs, check the drum, and perform a major
inspection when you reline the brakes.
SHTS068020200087