freightliner Argosy COE 2011, Maintenance Manual

Page: 132 / 193

any evidence that balance weights are missing,
remove 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. 5 ,
Ref. 2. 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 assis-
tance in determining 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 flat surface, apply the park-
ing brakes, and chock the tires.
2. Wipe all old grease and dirt from each U-joint
grease fitting. See
Fig. 5 , Ref. 8.
3. Use a hand-type grease gun, or a high-pressure
gun with a low-pressure adapter, to lubricate
U-joints. If a low-pressure adapter is not used,
U-joints may not receive enough grease.
Using lithium 12-Hydroxy stearate grease (NLGI
Grade 1 or Grade 2, with EP additives), lubricate
until
new grease can be seen at all four U-joint
seals. Fresh grease must be seen escaping from
all four bearing-cap seals of each U-joint. On
yokes equipped with a yoke-bearing cap, if most
of the grease being added to a U-joint can be
seen escaping from just one of the U-joint seals,
check the torque on the capscrews at that seal.
4. Tighten the bearing-cap capscrews 43 lbf·ft (49
N·m). If the capscrews were already tight, or all
of the U-joint seals still do not purge, remove the
bearing cap at that seal, and examine the seal
for damage. If the seal is damaged, replace the
complete U-joint.
5. If grease does not appear at one seal, use a pry-
ing tool to pry the U-joint trunnion away from the
non-purging seal, or tap the driveshaft or yoke
with a plastic or rawhide mallet on the side oppo-
site the dry seal, while continuing to lubricate. If
grease still does not appear, loosen the cap-
screws at the bearing with the dry seal, to relieve
seal tension. Lubricate the U-joint until new
f410012a 10/06/2016
Attempt to move the sleeve-yoke and splined shaft back
and forth.
Fig. 4, 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. 5, Slip Joint and U-Joint Lubrication
Driveline
41
Century Class Trucks Maintenance Manual, January 2016
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