UniCarriers FD25T4C - Page 135

BRAKE SYSTEM
Checking
item
Service Required Tools Daily
Monthly
(200 hrs)
Trimonthly
(600 hrs)
Semiannually
(1200 hrs)
Annually
(2400 hrs)
Brake pedal
Check for play. Scale
○ ○ ○ ○ ○
Check for pedal height and returning. Scale
○ ○ ○ ○ ○
Check for braking or uneven braking. Operate
○ ○ ○ ○ ○
Check for the entrance of air into braking piping. Operate
○ ○ ○ ○
Check booster for proper function and oil leaks
(trucks with power brake).
Operate
○ ○ ○ ○ ○
Parking
brake lever
Check for proper operation and allowance. Operate
○ ○ ○ ○ ○
Check for braking effect. Operate
○ ○ ○ ○ ○
Rod, cable
Check for proper operation. Operate
○ ○ ○ ○ ○
Check for loose linkage. Touch
○ ○ ○ ○
Hose and
pipe
Check for damage, leaks or interference. Visual
○ ○ ○ ○
Check for loose connections or clamp. Touch
○ ○ ○ ○
Wheel
brake
Check for uid leaks (oil leaks for trucks with
power brake).
Visual
○ ○ ○ ○ ○
Check uid level. Visual
○ ○ ○ ● ●
Check master cylinder and wheel cylinder for
proper operation. Check them for oil leaks or
damage.
Operate
○ ○ ○ ○ ○
Check master cylinder, piston cup and check
valve for wear or damage, and replace if
needed.
Disassembly
●
Brake drum
and brake
shoe
Check brake drum for loose installation.
Test
hammer
○ ○ ○ ○
Check lining for wear.
Vernier
calipers
○
Check brake shoe for operation. Operate
○
Check anchor pin for corrosion. Visual
○
Check return spring for deterioration. Scale
○
Check automatic clearance adjuster for
operation.
Operate
○
Check drum for wear or damage. Visual
○
Back plate
Check for deformation or cracks. Visual
○
Check loose installation.
Test
hammer
○
4-44
PERIODIC INSPECTION