11-20 FINAL DRIVE
Final Gear Case and Oil
Mount a dial gage [D] on a vise so that the tip of the gage
is against the splines of the ring gear hub.
To measure the backlash, turn the ring gear hub [B] back
and forth [C] while holding the pinion gear steady with the
pinion gear holder [A]. The difference between the highest
and the lowest gage reading is the amount of backlash.
Measure backlash at three locations equally spaced on
Final Bevel Gear Backlash:
0.20 mm (0.0039
(at ring gear hub splines)
If the backlash is out of the limit, replace the ring gear
shims. To increase backlash, increase the thickness of
the shim(s). To decrease backlash, decrease the thick-
ness of the shim(s).
Change the thickness a little at a time.
Recheck the backlash, and readjust as necessary.
Tooth Contact Adjustment
Clean any dirt and oil off the bevel gear teeth with a high
-flash point solvent.
Apply checking compound to 4 or 5 teeth of the pinion
Apply checking compound to the teeth in a thin, even
coat with a fairly stiff paint brush. If painted too thickly,
the exact tooth pattern may not appear.
The checking compound must be smooth and firm, with
the consistency of tooth paste.
Special compounds are available at automotive supply
stores for the purpose of checking differential gear tooth
patterns and contact.