Subaru 2002 IMPREZA Service Manual page 1824

MANUAL TRANSMISSION AND DIFFERENTIAL
1. BEVEL PINION GEAR BACKLASH
Measure the backlash between bevel gear and pin-
ion. If it is not within specifications, install a suitable
washer to adjust it.
NOTE:
Be sure the pinion gear tooth contacts adjacent
gear teeth during measurement.
ST1 498247001 MAGNET BASE
ST2 498247100 DIAL GAUGE
Standard backlash:
0.13 — 0.18 mm (0.0051 — 0.0071 in)
2. HYPOID GEAR BACKLASH
Set the ST1, ST2 and ST3. 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.
ST1 498247001 MAGNET BASE
ST2 498247100 DIAL GAUGE
ST3 498255400 PLATE
Backlash:
0.13 — 0.18 mm (0.0051 — 0.0071 in)
NOTE:
If the backlash is outside specified range, adjust it
by turning the holder in right side case.
FRONT DIFFERENTIAL ASSEMBLY
G3M0670
B3M1363A
MT-100
3. TOOTH CONTACT OF HYPOID GEAR
Check the tooth contact of hypoid gear as follows:
Apply a uniform thin coat of red lead on both tooth
surfaces of 3 or 4 teeth of the hypoid gear. Move
the hypoid gear back and forth by turning the trans-
mission main shaft until a definite contact pattern is
developed on hypoid gear, and judge whether face
contact is correct. If it is inaccurate, make adjust-
ment. <Ref. to MT-100, ADJUSTMENT, Front Dif-
ferential Assembly.>
• Tooth contact is correct.
(A) Toe
(B) Coast side
(C) Heel
(D) Drive side
F: ADJUSTMENT
1. BEVEL PINION GEAR BACKLASH
1) Disassemble the front differential. <Ref. to MT-
95, REMOVAL, Front Differential Assembly.>
2) Select a different washer from the table and in-
stall.
Washer
Part No.
803038021
803038022
803038023
3) Adjust until the specified value is obtained.
Standard backlash:
0.13 — 0.18 mm (0.0051 — 0.0071 in)
B3M0070D
Thickness mm (in)
0.925 — 0.950
(0.0364 — 0.0374)
0.975 — 1.000
(0.0384 — 0.0394)
1.025 — 1.050
(0.0404 — 0.0413)