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TM-9-2330-380-14-P Semitrailer Van: Electronic Tactical 12-Ton 4-Wheel XM1063 (NSN 2330-01-224-9244) and M129A4 (NSN 2330-01-372-5642) Manual

WOBBLY WHEELS

TM 9-2330-380-14&P

Table 4-2. Unit Troubleshooting (cont'd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 3. Check for scored or deformed brake drum.

Replace scored or deformed brake drum (para. 4-52 (XM1063), 4-53 (M129A4)).

WHEELS AND HUBS

17. SEVERELY WORN, CHAFED, SCUFFED OR SHOW SUDDEN INCREASE IN

VISIBLE WEAR

Step 1. Check for proper tire pressure.

Inflate tires to correct pressure. M129A4 tire pressure is 70 psi (482.65 kPa).

XM1063: Highway ......................................................... 70 psi (482.65 kPa)

Cross country, sand, mud or snow .................................... 45 psi (310.28 kPa)

If tire pressure is correct, proceed to step 2.

Step 2. Check for loose wheel.

If wheel is loose, tighten wheel nuts. Torque to 450-500 lb-ft (610.2-678 Nm).

If wheel is not loose, proceed to step 3.

If wheel bearings are not loose, proceed to step 4.

Step 3. Check for loose wheel bearings.

If wheel bearings are loose, adjust bearings (para. 4-52 (XM1063), 4-53 (M129A4)).

Step 4. Check for deformed wheel or rim.

If wheel is defective, replace wheel (para. 3-4).

Step 5. Check for deformed brake drum.

Replace brake drum (para. 4-52 (XM1063), 4-53 (M129A4)).

If wheel is not defective, proceed to step 5.

18.

NOISYWHEELS

Step 1. Check adjustment of wheel bearings.

If wheel bearings are out-of-adjustment, adjust bearings (para. 4-52 (XM1063), 4-53 (M129A4)).