Page 731 - Workshop Manual - Aumark (BJ1051)

25-21
Rear axle- Differential assembly
3. Adjust the meshing marks of driving gear and driven gear

Meshing marks of the driven gear Causes Procedures of adjustment
1. Adjust the driven gear to keep
The driving gear is too far from it away from the driving gear.
the driven gear. 2. Adjust the driving gear to make
it close to the driven gear.
1. Adjust the driven gear to make
The driving gear is too close to it close to the driving gear.
the driven gear. 2. Adjust the driving gear to keep
it away from the driven gear.
1. Adjust the driven gear to keep
The driven gear is too close to the it away from the driving gear.
driving gear. 2. Adjust the driving gear to keep
it away from the driven gear.
1. Adjust the driven gear to make
The driven gear is too far from the it close to the driving gear.
driving gear. 2. Adjust the driving gear to make
it close to the driven gear.
Hint:
• Step 1, adjust the gear tooth meshing of the driving and driven gears. (Rotate the
differential bearing for the adjustment of nuts, refer to “chapter 25 rear axle-differential
assembly, overhaul”)
• Step 2, adjust the tooth surface clearance between the driving gear and the driven gear.
(Adjust the washer through the increase and decrease of driving gear bearing seat, refer to
“CHAPTER 25 REAR AXLE-DRIVING GEAR ASSEMBLY, OVERHAUL”)
• Check the meshing marks of the driving gear and the driven gear again after adjustment,
until getting the correct meshing marks of the driving gear and the driven gear.

4. Inspect the tooth surface clearance of driving 25
gear and driven gear
(a). Measure the tooth surface clearance between the
driving gear and the driven gear by a dial
indicator.
Hint:
• Measure respectively on the four positions that
uniformly distribute along the circumference of
the driven gear.
• Makesure that the head of the dial indicator must
be perpendicular to the surface of the point
being measured.
Tooth surface clearance:
Vehicle type Standard

1051 series 0.18 ～ 0.23 mm

1061 series 0.18 ～ 0.23 mm

1089 series 0.30 ～ 0.40 mm
If the tooth surface clearance of the driven gear is beyond
the standard value or the variation quantity is beyond the
limit value, adjust the washer through the increase or
decrease of the driving gear bearing seat. (refer to “chapter
25 rear axle-driving gear assembly, overhaul”)

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