Table 6. Fifth Wheel Troubleshooting Procedures.

TM 9-2320-312-10

TROUBLESHOOTING PROCEDURES - CONTINUED

0010 00

Table 6. Fifth Wheel Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Fifth Wheel Jaws Will Not Open When Fifth 1. Check

whether

manual Disengage manual secondary lock

Wheel Lock Control is Placed in Unlock

secondary lock handle is handle.

Position.

engaged.

2. Check air pressure gauge for If gauge or LOW AIR warning

proper air pressure.

light and buzzer indicate low air

pressure, notify Unit Mainten-

ance.

3. Check air system at fifth wheel If air lines or air cylinder are

for leaks or damage.

leaking or damaged, notify Unit

Maintenance.

4. Check for damage to fifth wheel If damaged, notify Unit Maint-

jaws and locking components. enance.

2. Fifth Wheel Will Not Respond to UP or DN 1. Check hydraulic fluid level in Add hydraulic fluid as necessary

Position of Fifth Wheel Lift Control.

reservoir.

(WP 0011 00 and WP 0012 00).

2. Check for damage and oil leaks If damage or leaks are found,

in hoses and hydraulic notify Unit Maintenance.

cylinders.

Table 7. Steering Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

1. Hard Steering, Shimmy or Wandering.

Check tire pressure when tires are cold.

1. Check that tires are inflated to

Inflate tires to proper pressure.

120 psi (827 kPa).

2. Check for loose wheel nuts.

Tighten loose wheel nuts and

notify Unit Maintenance to apply

proper torque.

2. Vehicle Steering Slow or Intermittent to

1. Check fluid level in hydraulic

If fluid level is low, fill to correct

Respond.

reservoir.

level (WP 0011 00 and WP 0012

00).

2. Check for leaks.

If leaks are found, notify Unit

Maintenance.

0010 00-6