SAAB WIS ONLINE

INSPECTION

INSPECTION

Repair or replace the differential gear in the following cases:


• The hypoid drive gear and drive pinion shaft tooth surface are damaged, excessively worn, or seized.

• The roller bearing on the drive pinion shaft has a worn or damaged roller path.

• There is damage, wear, or seizure of the differential bevel pinion, differential bevel gear, washer, pinion shaft, and straight pin.

• The differential case has worn or damaged sliding surfaces.



(A)

Drive pinion shaft

(B)

Hypoid driven gear

(C)

Pinion shaft

(D)

Straight pin

(E)

Washer

(F)

Differential bevel gear

(G)

Differential bevel pinion

(H)

Roller bearing

(I)

Differential case



BEVEL PINION GEAR BACKLASH

Measure the backlash between bevel gear and pinion. 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 32005094 MAGNET BASE

ST2 32005095 DIAL GAUGE

Standard backlash:

0.13 — 0.18 mm (0.0051 — 0.0071 in)


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 32005094 MAGNET BASE

ST2 32005095 DIAL GAUGE

ST3 32005096 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.


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 transmission main shaft until a definite contact pattern is developed on hypoid gear, and judge whether face contact is correct. If it is inaccurate, make adjustment.


• Tooth contact is correct.


(A)

Toe

(B)

Coast side

(C)

Heel

(D)

Drive side