freightliner Argosy COE - 41-02 Driveline Lubrication

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
grease is seen at the seal, then tighten the cap-
screws to the correct torque specifications. If the
bearing will not take grease, replace the U-joint.
See Group 41 of the
Century Class Trucks
Workshop Manual
for replacement instructions.
6. Check the purged grease. If it appears rusty,
gritty, or burned, replace the U-joint.
7. Wipe the purged grease from the seals, and any
excess grease from the grease fitting.
f410012a
05/27/93
Attempt to move the sleeve-yoke and splined shaft back
and forth.
Fig. 4, Slip Joint Spline Wear Checking
f410050a
10/20/93
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, July 1999 41/3