screw. If the bearing will not take grease, re-
place the U-joint assembly; see Group 41 of the
School Bus Chassis Workshop Manual
.
4. Check the old grease. If it appears rusty, gritty, or
burned, replace the U-joint assembly. See Group
41 of the
School Bus Chassis Workshop Manual
.
5. Wipe any excess grease from the seals and
grease fittings.
Slip-Joint Spline Lubricating
1. Wipe all old grease and dirt from the slip-joint
grease fitting. See Fig. 4, Ref. 1.
2. Use a hand-type grease gun or a high-pressure
gun with a low-pressure adapter, to lubricate the
slip-joint. Using lithium 12 hydroxy stearate
grease (NLGI grade 1 or 2, with EP additives),
lubricate until fresh grease appears at the
pressure-relief hole in the yoke plug. Then cover
the relief hole with your finger, while continuing
to lubricate until fresh grease appears at the slip-
joint seal. See Fig. 4, Ref. 6. This ensures com-
plete lubrication of the splines.
3. Wipe any excess grease from the pressure-relief
hole, slip-joint seal, and grease fitting.
Driveline41
School Bus Chassis Maintenance Manual, April 199841/4
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