Cub Cadet 5000 Series - Manual (Page 55)

Domestic Series 5000 MFD
51
9.31. Install the pinion assembly: gear, washers, bear-
ings, spacer, o-ring. See Figure 9.31.
9.32. Drive new outer races into place if the pinion
bearings have been replaced.
9.33. Install the inner pinion bearing on the pinion
shaft, and install the shaft from the inside of the
right axle housing.
9.34. Slip the outer pinion bearing onto the pinion
shaft.
9.35. Lubricate the new o-ring, and slide it into posi-
tion on the pinion shaft.
9.36. Twist and push the spacer over the o-ring. The
o-ring forms the seal between the O.D. of the
pinion shaft and the I.D. of the spacer.
9.37. Install the washers and pinion nut onto the pin-
ion gear.
NOTE: In some applications, a variety of wash-
ers are available to adjust the depth of the pinion
gear in the case. On the Cub Cadet Series 5000
MFD, all of the backlash adjustment is done by
shimming the differential from side to side. No
adjustment is intended to be done on the pinion.
NOTE: If no major components have been
replaced, simply replacing the original shim
washers in their original positions is likely to
result in the correct ring and pinion gear back-
lash setting. Otherwise, some adjustment may
be necessary.
Figure 9.31
Tapered roller bearings
(pinion bearings)
Spacer
O-ring
Pinion gear (input shaft)
groove
for O-ring
Washers
stake nut
9.38. Tighten the pinion nut until the pinion gear is
subject to 25-30 in-lbs (2.825-3.40) of drag. To
measure pinion drag: See Figure 9.38.
• Slip a shop towel over the splines on the pinion
shaft.
• Use a 19 mm 12 point socket, on a torque
wrench to turn the pinion shaft.
• Read the pinion drag on the scale of the torque
wrench.
• Tighten the nut to increase drag, loosen the nut
to decrease drag.
• Mark the position of the nut in relation to the
shaft once the correct drag is achieved. This
can be done with a paint marker or marker pen.
NOTE: For the purpose of setting the back lash,
the cross-shaft, miter gears, and pinion gears
may be left out of the differential. This will make
alignment and fitting much easier, but will not
effect the measurement.
9.39. Install the ring gear to the differential housing, if
it has been removed. Apply a small amount of
thread locking compound such as Loctite 242
(blue), and tighten the bolts to a torque of 160-
220 in-lbs(18-25 N-m).
9.40. Suspend the right axle housing so that it hangs
in a vertical position, with 18” (46 cm) of clear
access beneath it.
NOTE: Any number of means can be improvised
to suspend the axle housing by the pivot journal,
with the drop axle housing on the ground for sta-
bility.
Figure 9.38
Checking pinion
drag