Unit Mechanical Troubleshooting - continued

TM 9-2320-386-24-1-1

0010 00

Unit Mechanical Troubleshooting (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 2. Inspect wheel bearings for proper adjustment and damage. Raise wheels off ground.

Use prybar to lift up on bottom of tire. Excessive play indicates improperly adjusted or

damaged bearings.

a. Adjust wheel bearings (TM 9-2320-361-20).

b. Replace damaged bearings (TM 9-2320-361-20).

c. Check tie rod ends for wear. Replace if worn (TM 9-2320-361-20).

END OF TESTING!

STEERING

39. HARD STEERING

Step 1. Inspect all air lines and hoses for leaks.

Tighten loose fittings and replace leaking lines (WP 0186 00).

Step 2. Ensure arrow on regulator points toward front of vehicle.

a. Remove from vehicle, if not on correct (WP 0184 00).

b. Install regulator on vehicle (WP 0184 00).

Step 3. Check air pressure from regulator. Pressure should be between 35-45 psi (241-310 kPa).

Adjust regulator to correct pressure setting.

Step 4. Check steering assist cylinder and drag link for leaks and damage.

Replace drag link or steering assist cylinder if leaking or damaged (WP 0181 00).

Step 5. Inspect steering linkage for binding, damage, and improper lubrication.

a. Repair or replace binding or damaged linkage (TM 9-2320-361-20).

b. Lubricate linkage (WP 0023 00).

Step 6. Inspect steering knuckles for binding. Raise front wheels off ground. Disconnect drag link

at steering arm. Turn wheels from side to side to determine binding.

If wheels bind, notify direct support maintenance.

Step 7. Check spring U-bolts for tightness.

Tighten U-bolts 350-400 lb-ft (475-542 Nm).

Step 8. Check front wheel alignment.

a. Check front tires for underinflation and uneven tire pressure. Inflate tires to proper

pressure.

b. Adjust toe-in to specifications (WP 0179 00).

Step 9. Check drag link for internal leakage.

a. Ensure wheels are straight ahead.

b. Build up air pressure to 120 psi (827 kPa). Shut down engine.

c. Slowly disconnect exhaust hose from drag link. If air leaks from exhaust port with

wheels straight ahead, replace drag link.

d. Disconnect two air lines from drag link leading to steering assist cylinder. Install two

pipe plugs in drag link.

e. Turn steering wheel and extend torque valve. Minimal or no air should escape torque

valve exhaust ports. If air constantly leaks, replace drag link (WP 0181 00).