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Page Title:
Table 12. Braking System (Unit) Troubleshooting Procedures - Continued. |
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 TM 10-3930-660-24-1
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 12. Braking System (Unit) Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Check parking brake for
Inspect and adjust parking brake
5.
Engine Cannot Move Vehicle or Has
dragging condition.
Difficulty Moving Vehicle.
2. Check service brakes for
Inspect and, if necessary, replace
dragging condition.
service brake caliper(s). Refer to
Direct Support Maintenance.
3. Check for a broken propeller
Replace propeller and/or U-
shaft.
joints (WP 0124 00).
1. Check for air in brake
Bleed brake system to purge air
6.
Brakes Chatter or Are Noisy.
system.
from system (WP 0129 00).
2. Check for loose or worn
Replace service brake shoes if
service brake shoes.
required (WP 0130 00).
1. Check wheel adjustment.
Adjust tie rod as necessary (WP
7.
Unit Pulls to the Right or Left When Moving
Straight Ahead.
2. Inspect steering cylinder for
Replace steering cylinder (WP
hydraulic oil leaking past
cylinder piston.
3. Check for worn steering
Replace steering control valve
control valve.
4. Check for worn steering
Test steering select valve.
select valve.
Replace steering select valve if
defective (WP 0144 00).
5. Inspect service brake caliper
Repair or replace service brake
and rotor for damage.
caliper or rotor (WP 0247 00).
1. Check for defective priority
Replace priority valve if
8.
Vehicle Will Not Steer or is Hard to Steer.
valve.
required (WP 0177 00).
2. Inspect steering control
Replace steering control valve as
valve for leakage.
required (WP 0144 00).
3. Check for low tandem gear
Test large section of tandem gear
pump flow.
pump for output. Replace if
necessary (WP 0173 00).
1. Check for air in hydraulic
Check for leaks and loose
9.
Steering Wheel Kickback
system.
connections on pump inlet lines.
Purge air by operating hydraulic
system (WP 0172 00).
2. Check for leakage in steering
Replace steering control valve
control valve.
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