Specifications

Assembly and Installation
48 MAINTENANCE MANUAL
22. Install the washer and the nut the drive pin-
ion. Prevent the drive pinion assembly from
rotating by using of device or tool to hold
the teeth of the helical driven gear or place
wood blocks between the head of the pin-
ion and the differential case wall. Tighten
thenuttothespeciedtorque.SeeSection
8. Remove the holding tool or the wood
blocks.
23. Use an inch-pound torque wrench or a
spring scale to inspect the preload of the
bearings on the drive pinion.
Torque Wrench Method
1. Place an inch-pound (N.m) torque wrench
and the correct socket in the drive pinion nut.
Figure 5.16.
Dinamometry Scale Method
1. Wind a cord around the washer under the nut
of the drive pinion
2. Attach a dinamometry scale to the end of the
cord
3. Pull the dynamometry scale and cord in a
horizontal direction while looking at the read-
ing on the spring scale. Figure 5.17.
2. Use the torque wrench to rotate the drive pin-
ion assembly. Inspect and record the torque
level. Read while rotating the assembly. Re-
cord the dynamic or rotating torque not the
starting torque.
3. The preload of the drive pinion bearings must
be within the following limits.
• For new pinion bearings: 5-45 lb-in (0.56-
5.08 N.m) rotational torque
.
• Forusedpinionbearings:10-30 lb-in(1.13-
3.39 N.m ) rotational torque
.
• Ifthepreloadisnotwithinthespeciedlim-
its, remove and replace the spacer between
the outer bearing cone and the helical driven
gear. See the procedure below:
• To decrease the preload, install a thicker
spacer.
• Toincreasethepreload,installathinnerspacer.
Figure 5.17
Read rotating
torque a dina-
mometry
Figure 5.16
REAR SIDE GEAR
BEARING CUP
CARRIER INPUT
BORE