Thomas PROTOUGH 900 - Brake Maintenance

4. MAINTENANCE
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4.7 AS REQUIRED SERVICE
4.7C Wheel Bearing and Seal
Maintenance
Visually inspect the oil seal for leaks
and fill to the full oil level line (T90085).
Wheel Bearing Adjustment
1. Lubricate the wheel bearing with
clean lubricant of the same type used in the
axle sump or hub assembly.
2. Tighten the adjusting nut to a torque
of 200 ft. lbs., while rotating the wheel.
3. Back the adjusting nut off one full
turn.
4. Tighten the adjusting nut to a final
torque of 50 ft. lbs., while rotating the
wheel.
5. Final back off of adjustment nut-1/4
turn and install lock washer to nearest hole.
6. Torque jam nut to 200-300 ft. lbs. (if
nut size less than 2 5/8") or 300-400 ft. lbs.
(if nut size greater than 2 5/8").
7. Measure end play with a dial indica-
tor, ensure it is .001" - .005".
4.7D Brake Maintenance
Lubricate camshaft slack adjusters every
5,000 miles. The following service is rec-
ommended every 10,000 to 25,000 miles.
T90085
Inner Wheel
Bearing
Minimum
Oil Level
Outer Wheel
Bearing
Oil Seal
Axle Ring
T90086
T90087
Grease Zert
Grease Zert