TM 5-3805-261-23-1
BRAKE SYSTEM TROUBLESHOOTING PROCEDURES
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
Check the clearance adjustment on
Adjust clearance on parking brake control
1.
Parking Brake Is Not
parking brake control valve.
Engaging Correctly.
valve if clearance is not correct (WP 0158
2.
Check the parking brake control
Replace control valve if worn, damaged,
valve.
or defective (WP 0158 00). If the problem
still exists, go to Test 3
3.
Check the quick release valve.
Repair or replace quick release valve if
worn, damaged, or defective (WP 0312
00). If the problem still exists, go to Test 4.
4.
Check parking brake actuator.
Replace parking brake actuator if
damaged or defective (WP 0312 00). If
the problem still exists, go to Test 5.
5.
Check that adjustment of rod end on
Adjust parking brake actuator as
parking brake actuator does not
necessary (WP 0159 00). Repair parking
permit too much free movement of
brake after completing steps 1 through 4,
lever on transmission.
if necessary.
1.
Check for air pressure at supply port
If no air pressure at supply port,
2.
Parking Brake Is Not
of control valve.
Releasing Correctly.
troubleshoot air compressor assembly. If
the problem still exists, go to Test 2.
2.
Check clearance adjustment of
Adjust control valve as necessary (WP
control valve.
Test 3.
3.
Check for wear or damage to control
If control valve is worn or damaged,
valve.
replace (WP 0158 00). If the problem still
exists, go to Test 4.
4.
Check for wear or damage to quick
If quick release valve is worn or damaged,
release valve.
repair (WP 0312 00). If the problem still
exists, go to Test 5.
5.
Check for worn or damaged parking
If parking brake actuator is worn or
brake actuator.
damaged, repair (WP 0312 00). If the
problem still exists, go to Test 6.
6.
Check adjustment of rod end of
If no free travel is permitted, adjust rod
parking brake actuator to ensure that
end (WP 0159 00). Repair parking brake
with the brake off, a small amount of
after completing steps 1 through 6 as
free travel on lever on transmission is
necessary.
permitted.
1.
Check for restricted air intake. Check
Remove restrictions for air intake system
3.
Air Compressor Passes
engine air cleaner assembly and
Excessive Oil, Indicated by
as necessary (WP 0038 00). If the problem
compressor air inlet line for
Oil Seeping from Air
still exists, go to Test 2.
restrictions.
Strainer.
