Section XV. MAINTENANCE OF THE WHEELS

Section XV. MAINTENANCE OF THE WHEELS

4-54. General

Warning: Block the truck before attempting

The truck is driven by the front wheels and utilizes the

to remove the wheels.

rear wheels for steering. The front wheels are driven by

a ring gear and pinion system which provides the final

(1) To raise the front end of the truck for

speed reduction at the wheels. All wheel hubs ride on

wheel and tire replacement, tilt the mast back as far as

tapered roller bearings which must be cleaned and

possible and install a wooden block under the mast

repacked with grease at the intervals indicated on the

assembly. Tilt the mast forward to raise the front of the

lubrication order. The tires are of the solid rubber

truck. To raise the rear wheels for wheel and tire

cushion type.

replacement, use a jack or hoist. Place blocking under

the frame.

(2) Remove the bolts (1, fig. 4-53),

4-55. Wheels and Tires

lockwashers (2) and hubcap (3). Remove the cotter pin

a. Removal

(4), washer (6), and retaining nut (5).

Bolt

Washer

Lockwasher

Outer wheel bearing

Hubcap

Wheel and tire assembly

Cotter pin

Inner wheel bearing

Retaining nut

10.

Spindle

Figure 4-53. Wheel removal

(3) Remove the outer wheel bearing (7) and

caused by oil, grease or chemicals, and other damage.

remove the wheel assembly (8).

Use a sharp knife to trim around cuts, removing the

b. Cleaning and Inspection.

edges which could catch and cause further enlargement

of the damaged area.

(1) Inspect the wheels for distortion, cracks,

(3) If either the wheel or tire is damaged,

elongated or worn mounting holes, and other damage.

replace the parts as an assembly.

(2) Inspect the tires for cuts, imbedded glass

or metal, and excessive wear. Inspect for deterioration

4-44