Mazda 1990 323 Workshop Manual Supplement page 514

REAR DlFFERENTlAL
9. Check the backlash at the three other marked points, and
make sure the minimum backlash is above 0.05mm
(0.0020 in) and the difference between the maximum and
minimum is less than 0.07mm (0.0028 in).
u/
97UOMX- 10~
10. Tighten the adjusting screws equally until the distance be-
tween the pilot sections on the bearing caps is as specified.
Specified distance:
150.13-l 50.20mm (5.910-5.913 in)
Note
l
When adjusting the differential bearing preload, be
careful not to affect the backlash of the drive pin-
ion and ring gear.
GOOD CONTACT
03UOMX-882
RED LEAD
I
03UOMX-883
TOE CONTACT
FLANK CONTACT
1
I
63609X-385
HEEL CONTACT
FACE CONTACT
I
SMUOMX-061
M-30
Inspection and adjustment of teeth contact
1. Coat both surfaces of 6-8 teeth of the ring gear with a uni-
formly thin coat of red lead.
2. While moving the ring gear back and forth by hand, rotate
the drive pinion several times and check the tooth contact.
3. If the tooth contact is good, wipe off the red lead.
4. If it is not good, readjust the pinion height, and then read-
just the backlash.
(I) Toe and flank contact
Replace the spacer with a thinner one to move the drive
pinion outward.
(2) Heel and face contact
Replace the spacer with a thicker one to bring the drive
pinion inward.