J&M 500ST - Manual (Page 20)

20
2.0 Service
Bearing Lubrication
- The axles are equipped with oil lubricated hubs. The lubrication procedure is to periodically fill the hub with
a high quality hypoid gear oil to the level indicated on the clear plastic oil cap. The oil can be filled through the
rubber plug hole in the cap.
Recommended Oil- SAE 90 Hypoid Gear (Hypoid Rear Axle Oil)
Seal Inspection and Replacement
-Whenever the hub is removed, it’s recommended to replace the seals to assure that the seal properly seals the
bearing cavity. To replace the seal:
1. Pry the seal out of the hub with a screwdriver. Never drive the seal out with the inner bearing as you may cause
damage to the bearing.
2. Apply Permatex sealant to the outside of the new seal.
3. Tap the new seal into place using a clean wood block.
Bearing Adjustment and Hub Replacement
If the hub has been removed or bearing adjustment is required, the following adjustment procedure must be fol-
lowed:
1. Install the bearing and washer into the hub. Thread on the inner nut, rotate the hub and tighten the nut to 100
Ft-Lbs. of torque.
2. Then loosen the spindle nut to remove the torque. Do not rotate the hub.
3. Finger tighten the spindle nut until snug.
4. Back the spindle nut off slightly 1/4 to 3/8 turn.
5. Place the tang washer on the spindle and bend two tangs inward over the nut. This will keep the inner nut from
turning while torque is applied to the outer nut
6. Install the outer nut and torque it to 100—175 Ft-Lbs. Insure that the inner nut does not turn. Bend two tangs
from the tang washer over the outer nut flats to secure.
7. Install cap with the O-ring and plug installed. Rotate the hub and check the bearing adjustment. The allowable
end play is .001” - .010”.
Inspection and Replacement
All the components of your suspension system should be visually inspected at least every 6,000 miles for signs
of excess ware, elongation of bolt holes, and loosening of fasteners. Whenever loose or replaced, the fasteners in
your suspension system should be torqued as in the chart below.
Torque (Ft-Lbs.)
Item Min. Max.
U-Bolt 110 150
Drum Mounting 90 110
Spring Eye Bolt 200 250
Equalizer 325 375
Plastic Oil Cap 20 30