User's Manual

Date of Origin – 02/01/08

Grease lubricated wheel ends should be changed whenever seals are replaced, brakes are

relined or at least every 12 months or 100,000 miles with NLGI Grade 1 or 2 grease.

To install semi-fluid grease

1. Pack both bearings with grease by forcing grease into the cavities between rollers

and cage from the large end of the cone.

2. Apply a light coat of grease to the spindle bearing journals.

3. Install the inner bearing, inner seal and hub.

4. Fill the cavity between the bearing races with grease up to the smallest diameter of the

bearing cups.

5. Install the outer bearing and adjust end-play as noted in the “Wheel Bearing Adjustment

Procedure” section.

6. Apply a light coat of grease to the interior of the hubcap and wheel retention hardware

to indicate what lubricant is installed as well as to help prevent corrosion of these parts.

BRAKES

Proper maintenance of the brakes is vitally important. This includes lining inspections and brake

adjustments. A schedule for periodic adjustment, cleaning, inspection and lubrication of the brake

equipment must be made according to duty cycle and type of operation.

Brakes must be adjusted as frequently as required for correct operation and safety. The adjustment

must give correct clearance between the lining and drum, correct push rod travel, and correct bal-

ance between the brakes. Improper or inadequate lubrication is the leading cause of dragging

brakes/premature brake wear.

Brakes must be cleaned, inspected, lubricated and adjusted every time the wheel hubs are re-

moved.

During a major overhaul, the following parts must be carefully checked and replaced with genuine

replacement parts if required.

1. Backing plates or spiders for distortion and loose bolts.

2. Anchor pins for wear and correct alignment.

3. Brake shoes for wear at anchor pins or roller slots.

4. Camshaft and camshaft bushings for wear.

5. Shoe return springs for wear and loss of strength.

6. Brake linings for grease on the lining, wear, chips, and loose rivets or bolts.

7. Drums for cracks, deep scratches, heat checking or other damage.

Wheel bearings must be correctly adjusted before brake

adjustments are made.

NOTICE:

Brake linings must not be permitted to wear to the point

that the rivets or bolts touch the drum.

NOTICE:

See the manufacturer’s maintenance manual for more information and details on brake main-

tenance, repair and trouble shooting.