Lada Niva 4x4, Service Manual

Page: 43 / 81

state this ring should pass free through the spline opening in race
11, what allows to connect and to separate the joint and shaft 4.
The joint is protected by boot 6 from dirt and moisture, which
in its turn is protected from mechanical damages by shroud 5. On
the shaft 4 and on the joint case the shroud is fixed by clamps 9.
The use of straight grooves differs the design of the inner joint
from the outer one. The axial movement of components in the
case is limited by circlip 2.
The components of the inner joint and separate sets of the
outer joints are sorted according to their sizes into different
assembly groups, therefore do not replace only part of the joint
during repair. The joint should be replaced in assembly. Only
shroud 5 and boot 6, clips 9, clamp 3 and circlip 2 can be
replaced separately.
Fault diagnosis
Diagnosis Remedy
Noise, knock from the front axle at vehicle movement (especially
at cornering)
1. Worn components in outer or
inner joints
2. Deformed wheel drive shafts
Oil leak
1. Damaged or broken protective
cover of inner or outer joint
Removal and refitting
Removal. Place the vehicle on a lift or over an inspection pit,
set the handbrake and do the following from both sides of the
vehicle:
- raise the front part of the vehicle and put it on supports;
- disconnect the shock-absorber from the suspension lower
arm;
- remove the suspension spring, and disconnect the balljoint
from the lower arm;
- remove the wheel hub cap and undo the wheel hub bearing
nut, then unscrew the fastening nut of the inner joint housing
bearing cover;
- undo the fastening bolt of the front axle suspension right
arm;
- remove the outer and inner joints from the wheel hub and
from the front axle.
The refitting of the front wheel drive is carried out in
reverse sequence. When tightening the wheel hub bearing nuts,
adjust the bearing clearance as specified in subsection "Front
suspension".
Dismantle and reassembly
Dismantle is needed in case of damage on boot 6 and shroud
5 with the aim to check the joint components and the quality of
greasing.
The order of dismantle is the following:
- undo clip 9 (see fig. 3-82), remove it from boot 6 and move
the shroud with the boot on the shaft to provide access to joint
race 11;
- using a knock-out and a hammer, beat off race 11 from the
shaft;
ATTENTION. To exclude jamming circlip 12, pay atten-
tion not to skew the race, be careful in choosing the force
and direction of impact.
- remove thrust rings 7, boot 6 and shroud 5 from shaft 4;
- move on the shaft the inner joint shroud and boot and, after
taking out lock ring 2, take out from case 1 shaft 4 in assembly
with race, cage and balls;
98
Fig. 3-82. Front wheel drive:
1 - inner joint housing; 2 - circlip; 3 - boot clamp; 4 - wheel drive shaft; 5 - shroud; 6 - boot; 7 - race thrust ring; 8 - cage; 9 - clip; 10 - ball; 11 - outer joint holder; 12 - cir-
clip; 13 - outer joint casing
1. Replace damaged or worn joints
2. Straighten or replace shafts
1. Renew greasing in joint and boot.
In case of wear or damage, replace
joint assembly
Fig. 3-83. Front wheel drive, outer joint, exploded view:
1 - joint housing; 2 - cage; 3 - race; 4 - ball