WHEELS AND TIRES TROUBLESHOOTING

TM 9-2320-285-24-1

2-55. WHEELS AND TIRES TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

TIRE WEARING UNEVENLY

Step 1. Place wood blocks at each wheel to prevent tractor from moving.

Raise one axle and wheels off ground.

Release tractor parking brake.

Place jack stands under tractor at axle ends.

Rotate wheel by hand; there should be a slight drag on wheel.

Repeat above for remaining wheel and axle.

If there is excessive drag on wheels, adjust brakes (para 2-50a for front axle brakes; para 2-51d(2)

for rear axle brakes).

If there is only a slight drag on wheels, go to step 2 below.

Step 2. With wheel off ground (step 1 above), check wheel bearing adjustment

(use pry bar to check for noticeable end play).

If there is noticeable end play, adjust wheel bearing (para 2-43b for front axle; para 2-44b for rear

axle).

If there is no noticeable end play, go to step 3 below.

Step 3. Check that wheel bearing is properly lubricated.

If wheel bearing is not properly lubricated, lubricate (para 2-43b.for front axle; para 2-44b for rear

axle).

If wheel bearing is properly lubricated, go to step 4 below.

Step 4. Check wheel bearing for damage (pars 2-43b for front axle; para 2-44b for rear axle).

If wheel bearing is damaged, replace (para 2-43b for front axle; para 2-44b for rear axle).

If wheel bearing is not damaged, notify direct support maintenance.

NOISY OR BUMPING SOUND WHILE TRAVELING

Step 1. Check if wheel lug nuts are loose.

If lug nuts are loose, tighten to 500-550 pounds foot (para 2-57).

If lug nuts are tight, go to step 2 below.

2-644