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FRONT AXLE (4X4)
53
FRONT AXLE
(4X4)
8. Align boot marks on shaft. Install and tighten
small clamp.
CV JOINT TESTING PROCEDURE
GENERAL GUIDELINES FOR TESTING DRIVE
SHAFT NOISE:
1. Ensure that the DRIVER is alone in the vehicle
while conducting the test.
2. All the windows of the vehicle should be fully
rolled up to reduce the disturbances caused by
external noises.
3. Drive on a smooth stretch of road and pay par-
ticular attention to various noises emanating from
the front portion of the vehicle. Observe the
changes in noise levels through speeds between
10 and 60 kmph.
4. It should be noted here that the driver may en-
counter difficulty in distinguishing between similar
sounding noises resulting from either the drive
shaft or the under-body
(For example noise from
suspension, steering etc.).
5. Therefore, it is advised that the vehicle be driven
on uneven and bumpy surfaces as well, to ob-
serve the noises which may then be attributable
to the under-body.
6. Focus should be on the side of the vehicle which
is being considered for the drive shaft complaint.
7. Tests for CV
(Wheel side/ Outer side)
and In-
board
(FA/ Inner side)
joints are different and
need to be conducted separately.
TESTING FOR NOISE
CHECKING FORWHEEL SIDE/ OUTER SIDE (
CV)
JOINT NOISE
NOTE
This noise will appear to emanate closer to the
wheel, rather than the front axle side.
1. Shift to the 2nd gear and maintain a steady speed
between 20 and 30 kmph.
2.
Drive the vehicle to form a figure of “8” as shown
and
Identify an audible and persistent “Cluck” like
noise during either an extreme left or extreme
right turn
3. The “Cluck-ing” noise on a particular turn can be
confirmed by repeating the turn.
CHECKING FOR FA SIDE/ INNER SIDE JOINT
NOISE
NOTE
This noise will appear closer to the FA, than the
wheel.
1.
Shift to the 4th gear and maintain a steady speed
between 40 and 60 kmph.
2.
Lower the vehicle speed by gently applying the
brakes while ensuring that the tyres do not
screech and the vehicle does not dive forward
sharply.
3.
Identify an audible”Dug” sounding noise as the
vehicle decelerates. As the vehicle slows down, it
can be observed that the sound would become
louder and occur after longer intervals.