Table of Contents
Advertisement
D
E
4
AILY
URO
Figure 53
Position the dial gauge 99395728 (1) with a magnetic base
and measure the clearance between the pinion and crown
wheel on four opposite teeth of the crown wheel (2).
The average of the measurements must equal the required
value.
If a different clearance is found, remove the caps (3) again and
swap over the assembly position of the adjustment rings (1
and 3, Figure 50).
Should this not be sufficient, replace adjusting rings by other
rings having different thickness, on condition that total
thickness must be equal to the total thickness of the adjusting
rings that were dismounted.
This is so as not to change the total rolling torque.
Using a brush, apply a thin layer of Prussian blue on ring gear
teeth.
Turn the pinion and measure the impression of the contact
of the pinion toothing on the crown wheel toothing.
Here we illustrate the possible contacts with the corrections
to obtain precise coupling of the crown wheel and pinion.
Figure 54
A = Coupling depth
B = Crest
C = Side
D = Play
Print 603.93.651
108427
44603
E = Greater base
F = Heel
G = Top land
H = Contact surface
I = Lateral surface
Figure 55
Correct contact.
Figure 56
Excessive contact on tooth
bottom or flank.
Move pinion away from ring
gear, then move ring gear
close to pinion in order to
adjust clearance.
Figure 57
Excessive contact on heel
of tooth.
Move the ring bevel gear
towards the pinion and
then move the pinion away
from the ring bevel gear to
adjust clearance.
31
REAR AXLE NDA RS
44604
44605
44606
Base - March 2006
Advertisement
Table of Contents
