SECTION 09: PROPELLER SHAFT
6
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
3.1 LUBRICATION
PROCEDURE
WARNING
Read “Spicer Life Series Driveshaft
Lubrication Warnings and Cautions” in
Spicer
Driveshaft’s Service Manual DSSM-0100.
1. Use recommended lubricant to purge
all
four seals of each universal joint. This
flushes abrasive contaminants from each
bearing assembly and assures proper filling
of
all
four bearings.
WARNING
Maximum grease gun pressure should not
exceed 60 psi. Excessive grease gun
pressures may cause seal damage.
2. Make sure fresh grease is evident at all u-
joint bearing seals.
FIGURE 3: BEARING LUBRICATION ZIRK
FIGURE 4: BEARING LUBRICATION
3. If any of the seals fail to purge, try to move
the propeller shaft from side-to-side while
applying grease gun pressure.
a) If all four bearing positions still do not
purge, releasing seal tension may be
necessary.
b) Remove the bearing retainer bolts and
bearing retainers and discard. Do NOT
reuse.
c) Once the bearing cups are free, allow
the propeller shaft to rest on the support
strap.
d) Apply a c-clamp around the inboard
bearings.
FIGURE 5: C-CLAMP
e)
Apply grease gun pressure. Completely
purge both bearings.
f) If bearings still do not purge, complete
the removal of the u-joint and inspect for
blockage.
g)
If the u-joint still do not purge at all four
positions after following the steps in this
procedure, replace the u-joint.
3.2 INSPECTION
RECOMMENDATIONS
U-joint inspections should be performed every
time a vehicle comes in for scheduled
maintenance.
Visually inspect for damaged bearing retainers,
loose bearing retainer bolts, loose companion
flange, bolts and nuts, loose or missing spring
tabs or spring tab bolts, damaged tangs on end
fittings, damaged or missing rotating bearing
cups. If any of these situations are evident,
replacement of the component is necessary.
Check all input and output end fittings for
looseness. Take hold of the end fitting with both
hands. Try to move it vertically and horizontally to
feel any looseness.
