Western Star 47X 2020, Maintenance Manual

Page: 115 / 166

rial. Remove any foreign material. If there is any
evidence that balance weights are missing, re-
move the driveshaft and have it balanced.
9. For driveshafts with slip joints, check to be sure
the yoke plug is not loose or missing. See
Fig. 6 .
Repair or replace the yoke plug as needed. If the
yoke plug is missing, the splined shaft may be
hitting the plug and knocking it out; contact your
Regional Service Office for assistance in deter-
mining the correct driveshaft length.
41–02 Driveline Lubrication
Universal Joint Lubrication
NOTE: Vehicles equipped with Meritor RPL Se-
ries drivelines do not require periodic lubrication.
1. Park the vehicle on a level surface, apply the
parking brakes, and chock the tires.
2. Wipe all old grease and dirt from each U-joint
grease fitting. See
Fig. 6 .
3. Use a hand-type grease gun, or a high-pressure
gun with a low-pressure adapter, to lubricate
f410534 06/02/2016
1
2
3
4
5
1. Yoke
2. Input Flange
3. Bolt
4. Washer
5. Nut
Fig. 4, Meritor RPL35 Series U-Joint
f410012a 10/06/2016
Attempt to move the sleeve-yoke and splined shaft back
and forth.
Fig. 5, Slip Joint Spline Wear Checking
f410050a 10/07/2016
1
1
2
3
3
3
4
5
6
7
8
A
A. After grease appears, cover the pressure-relief hole
while continuing to lubricate.
1. Slip Joint Grease Fitting (with grease gun attached)
2. Yoke Plug
3. Grease
4. Half-Round Yoke
5. Yoke Plug Pressure-Relief Hole
6. Slip Joint Seal
7. Full-Round Yoke
8. U-Joint Grease Fitting
Fig. 6, Slip Joint and U-Joint Lubrication
Driveline
41
47X and 49X Maintenance Manual, August 2020
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