Subaru 1600 Service Manual page 269

MANUAL TRANSMISSION AND 01 FFERENTIAL
37) Backlash adjustment of hypoid
par and preload adjustment of roller
bearing.
a. Place the transmission with case
(L.H.) faclna downward and put
Weight (399780104) on bearing
cup.
b. Screw axle shaft 011 seal holder into
case (L.H.) from the bottom with
Wrench (399780111). Fit Handle
(499927000) on the transmission
main shaft. Shift gear into 4th or
5th and tum the shaft several times.
Screw in the holder while turning
Handle untU a sHaht resistance is
felt on Wrench.
This is the contact point of crown
aear and drive pinion. Repeat the
above sequence several times to
ensure the contact point.
FfI. 6·'64
c. Remove weitht and screw in holder
without Q.rina on the upper side
and stop at the point where siight
resistance is felt.
NOTE:
At ttlia point. ttl, backl'" bttwnn
til, crown IIIr and drive pinion is
nro.
Al:2.107
F/f.
6-166
d. Fit lock plate. Loosen the holder
on the lower alde by 1
\&
notches of
lock plate and tum in the holder on
the upper alde by the same amount
in
order to obtain the backluh.
No'rE:
The notch of the lock plate moves by
%
notch if ttle plata is turned upside
down.
e. Tum in the holder on the upper
side additionally by
*
to 1 notch in
order to apply preload on taper
roller bearing.
f. Tighten temp ora rOy both the upper
and lower lock plates and mark
both holder and lock plate for later
readjustment.
g. Turn transmission main shaft
dozens of turns while tapping
around axle shaft bearing holder
lightly with plastic hammer.
Fig. 6·166
h. Set Dial Gauge (498247100) and
Magnet Base (498247001). Insert
the needle through transmission oil
drain plug hole so that the needle
comes In contact with the tooth
surface at a right angle and check
the backlash.
1600
Backlash
1800
I .
~ ~------
FfI. 6·161
0.1- 0.18mm
(0.004 - 0.0071 in)
0.13 - 0.18 mm
(0.0051 - 0.0071 in)
8 ••
1<4882.70011
G.utI
<_2471001
A12 . . .
8-&2
38) Checking tooth contact of crown
gear.
Apply a uniform thin coat of red lead
on both tooth surfaces of 3 or 4 teeth
of the crown gear. Move the crown
gear back and forth by turning the
transmission main shaft until a definite
contact pattern is developed on crown
gear, and judge whether face contact is
correct. If it is incorrect, make the
following correction.
NOTE:
Gear should be shifted into 4th geaf,
a. Tooth contact is correct.
Toe
Ori\/!! side
Fig.
6·168
b. Backlash is excessive.
Coast side
A12·114
To reduce backlash, loosen holder
on the upper side (case R.H. side)
and turn in the holder on the lower
side (case L.H. side) by the same
amount.
Fig.
6·169
c. Backlash is insufficient.
To increase backlash, loosen holder
on the lower side (case L.H. side)
and tum in the holder on the upper
side (case R.H. side) by the same
amount.
Oriw,lde
Hel
A12·111