The sealing rings are synthetic resin with chamfered ends. Check the condition of the sealing rings, and replace them only if they are worn, distorted, or damaged.
For a better fit, squeeze sealing rings together slightly before installing them.

Apply ATF to the new sealing rings, then install them on the secondary shaft.

After installing the sealing rings, verify the following:
The rings are fully seated in the groove.
The rings are not twisted.
The chamfered ends of the rings are properly joined.
M/T Differential Backlash Inspection (M/T)
Place the differential assembly on V-blocks (A), and install the right
driveshaft (B) and the left driveshaft (C).
Measure the backlash of both pinion gears (D) with a dial in ...
Tire Service Life
The life of your tires is dependent on many factors, including driving
habits, road
conditions, vehicle loading, inflation pressure, maintenance history, speed, and
environmental conditions (even ...
Lift and Support Points
NOTE: If you are going to remove heavy components such as suspension or the fuel
tank from the rear of the vehicle, first support the front of the vehicle with tall
safety stands. When substantial ...