Subaru 2009 IMPREZA Service Manual page 2143

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3. TOOTH CONTACT OF HYPOID GEAR

Check tooth contact of hypoid gear as follows: Ap-

ply a thin uniform coat of red lead on both teeth sur-

faces on 3 or 4 teeth of the hypoid gear. Move the

hypoid gear back and forth by turning the transmis-

sion main shaft until a definite contact pattern is de-

veloped on the hypoid gear, and judge whether

face contact is correct. When the contact pattern is

not correct, adjust. <Ref. to 5MT-71, ADJUST-

MENT, Front Differential Assembly.>

• Tooth contact is correct.

(B) Coast side

(D) Drive side

Front Differential Assembly

MANUAL TRANSMISSION AND DIFFERENTIAL

F: ADJUSTMENT

1. BEVEL PINION GEAR BACKLASH

1) Disassemble the front differential assembly.

<Ref. to 5MT-67, DISASSEMBLY, Front Differen-

tial Assembly.>

2) Select a different washer from the table and in-

3) Adjust until the standard value is obtained.

0.13 — 0.18 mm (0.0051 — 0.0071 in)

2. HYPOID GEAR BACKLASH

Adjust the backlash by turning the side retainer in

the RH side case.

ST 18630AA010 WRENCH COMPL RETAINER

Each time side retainer rotates one tooth, backlash

changes by 0.05 mm (0.020 in).

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)

0.05mm(0.0020 in)