frame mounts. Make sure those mounts are tight and all the bushings are in good shape. An
improvement to this stabilizer bar is to replace it with a much stronger version such
as the IPD 1 5/8” version and use polyurethane bushings. The 1 5/8” bars available
are 10 to 12 times stronger than the stock 1 1/4” sway bar.
The front wheel bearings require lube every 12,000 miles with high-temperature grease –
really. Check the bearings by raising the motorhome and supporting it at the front lower
control arm on each side. Now you can spin the wheel and check for noise or roughness. To
check for tight or loose bearings, grip the tire at the top and bottom and move the wheel
assembly in and out on the spindle. If hub assembly movement is less than .001 inch (too
tight) or more than .005 inch (too loose), adjustment is needed.
The adjustments steps are:
1. Remove the hub cap or wheel disc from the wheel.
2. Remove the dust cap from the hub.
3. Remove the cotter pin from the spindle and spindle nut.
4. Tighten the spindle nut to 12 ft. lbs. while turning the wheel assembly forward by hand to
fully seat the bearings. This will remove any grease which could cause excessive wheel
bearing play later.
5. Back off the nut to the “just loose” position.
6. Hand tighten the spindle nut. Loosen the spindle nut until either hole in the spindle lines
up with a slot in the nut (not more than ½ flat).
7. Install the new cotter pin. Bend the ends of the cotter pin against the nut. Cut off the
extra length to ensure that the ends will not interfere with the dust cap.
8. Measure the looseness in the hub assembly. There will be from .001 to .005 inch end play
when properly adjusted.
9. Install the dust cap on the hub.
10.Replace the wheel cover & hub cap.
Main Body Page 5 of 38 Total Pages
