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Lubrication
Universal Joint
Lubricate the universal joints at the grease fi tting until grease fl ows
from the bearing cup seals on all four trunnions. Use a grease
that meets Meritor specifi cation O-634-B, NLGI Grade 2 with EP
additive. Figure 9.22.
• If grease does not purge from all four trunnion seals:
Follow the steps below.
Fig. 9.22
a. Move the assembly UP-AND-DOWN or SIDE-TO-SIDE while
you apply grease gun pressure.
b. Loosen the bearing cup capscrews. Add grease until grease
purges from the four seals.
c. Tighten the bearing cup capscrews after grease purges.
• If grease still does not purge from all four trunnion
seals: Remove and replace the universal joint.
Slip Yoke Splines
Add a grease that meets Meritor specifi cation O-634-B, NLGI
Grade 2 with EP additive, to the slip yoke grease fi ttings. Six to
eight pumps or approximately one oz (28 grams) is suffi cient to
lube the splines. Figure 9.23.
Fig. 9.23
(16579)
Printed in USA
New grease must
flow at all four seals.
Copyright Meritor, Inc., 2021
9
155R Series Slip Drive Shaft Assembly
MM-96147 / Revised 03-21
Page 59
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