LEFT HAND NON-RATCHETING
Page 6B-40 90-883728 JULY 2001
5. Measure distance (a) and increase that distance by 1 in. (25.4 mm) by turning bottom
nut away from top nut.
1 in. (25.4 mm)
a
b
51870
a
b
c
a
a-Distance
b-Adaptor
c-Ledge
6. Turn driveshaft clockwise 2 or more turns to seat driveshaft bearings.
7. Insert Pinion Gear Locating Tool* (91-74776) into gear housing until it bottoms out on
bearing carrier Shoulder.
*Pinion Gear Locating Tool (91-12349A2) can be used. Use flat #7 and disc #2. Follow
instructions supplied with tool.
8. Determine pinion gear depth by inserting a feeler gauge thru access slot in pinion gear
shimming tool.
9. Clearance between shimming tool and pinion gear should be 0.025 in. (0.64 mm).
10. If clearance is correct, leave Bearing Preload Tool on driveshaft for “Determining
Forward Gear Backlash,” following.
11. If clearance is not correct, add (or subtract) shims at location shown to raise (or lower)
pinion gear.
When reinstalling pinion nut, apply Loctite 271 on threads of nut and retorque pinion
nut.
c
a
d
c
a
b
24643
a
b
a
c
c
d
a-Pinion Gear Shimming Tool (91-74776 or 91-12349A2)
b-Feeler Gauge
c-Obtain 0.025
in. (0.64 mm) Clearance between Shimming Tool and Pinion
Gear
d-Add or Subtract Shim(s) Here
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