Lada Niva 4x4, Руководство по обслуживанию

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graphite greasing or ãëñ-15. After refitting, check the operation
of axle shafts during an actual road test.
Inspection
Inspect the parts composing a complete set, and make sure
that:
- bearing is not worn and is not damaged; if the axial gap
exceeds 0.7 mm, renew the bearing;
- stop ring and bearing are not shifted in relation to the initial
position; if the bearing inner ring turns against the axle shaft land-
ing shoulder, renew the stop ring;
- bearing fastening plate and oil screen have no damages;
- axle shaft is not deformed and the landing surfaces are not
damaged; the axle shafts runout measured in centers, on the seal
journal does not exceed 0.08 mm. Before fitting in the centers,
carefully clean the centering apertures on the axle shaft from dirt
and rust.
In case of wear or damage of parts fitted on the axle shaft,
renew them following the below guidelines and using special
tools. An insignificant bending of the axle shaft core can be cor-
rected by straightening. After straightening the runout of the
flange end face measured in the centers, should not exceed 0.05
mm, if the runout is above the specified value, but no more than
0.08 mm, it can be lathed to eliminate runout. The reduction of
flange thickness due to turning should be no more than 0.2 mm.
Stop ring removal
The axle shaft bearing stop ring is removed and installed on
a hydraulic press.
First, bend out bolt retainers 39 (see fig. 3-54) that are fas-
tening plate 38 with the oil screen and the brake plate, and take
out the bolts.
Straddle the bearing with tool 67.7823.9529 and place the
axle shaft vertically so that the half-rings are rested on the thrust
ring.
Place the axle shaft under the press (fig. 3-61) and apply
gradually increasing force to the spline end of the axle shaft until
the bearing stop ring will be removed. The bearing stop ring
should be renewed.
Ensure that the landing surface of the axle shaft has no
marks or damages; renew if necessary.
Axle shaft reassembly
Place the axle shaft vertically and rest the flange on ring 7
(fig. 3-62) of tool 67.7823.9530.
Bolt together the axle shaft bearing oil screen and the bear-
ing fastening plate with a seal, and refit the assembly on the axle
shaft; fit the axle shaft ball bearing.
Fit a new stop ring into special retainer 3, place into heater
and warm the ring up to approximately 300 °ë, so that at the
moment of press-fitting its temperature will be 220-240 °ë.
The stop ring is press-fitted on the axle shaft with tool 1 on a
press with force of 58.8 kN (6000 kgf) so that the bearing inner
ring is fixed between the stop ring and the axle shaft collar.
87
Fig. 3-59. Checking for horizontal deformations of the rear axle beam
using a try-square on the outside surface of flange A.70172
Fig. 3-60. Rear axle beam straightening:
1 - hydraulic cylinder; 2 - clamping bar; 3 - flange A.70172; 4 - try-square;
5 - press table; 6 - rest; 7 - indicator post
Fig. 3-61. Pressing out the axle shaft bearing stop ring:
1 - fixture; 2 - axle shaft