Page 963 - Workshop Manual - Aumark (BJ1051)

31B-43
Transmission 6g 120- Secondary axle assembly

(b). Measure the diameter of the secondary-axle
main-bearing
Diameter
Position of bearing journal
Standard
Sixth-shifting gear 31 mm
Fourth-shifting gear 60 mm
Third-shifting gear 57 mm
Second-shifting gear 75 mm
Reverse gear 68 mm

If the diameter of the secondary-axle main-bearing journal
is less than the minimum valve, replace with a new
secondary axle.

20. Detect the internal diameters of all the
secondary-shifting gears
(a). Measure the internal diameters of all the
secondary-shifting gears.

Internal diameter
Gear position
Limit
Sixth-shifting gear 50 mm
Fourth-shifting gear 68 mm
Third-shifting gear 83 mm
Second-shifting gear 83 mm

Reverse gear 76 mm

If the value of the internal diameter is beyond the limit
value, replace the gears.

21. Detect the synchronizer ring
(a). Inspect whether there is wear and damage.
(b). Press the copper ring of synchronizer towards the
gear and turn towards the same direction, inspect its
locking effect. If the locking is not enough, apply a
layer of high-quality grinding paster on the contact
surfaces of the synchronizer ring and the gear and
polish slightly.

Notice: 31B
Make sure to clean the grinding paster after polishing.

(c). Inspect the locking effect of the synchronizer ring
again.
(d). If the locking effect is still not ideal, detect the
clearance between the gear and the synchronizer
ring.

Page 963