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WHEELS AND TYRES
477
SUSPENSION
WHEEL ASSEMBLY REPLACEMENT
Typical defects that require Wheel assembly
replacement :
(a) Cracks in the wheel disc face, in particular the
bolt hole area and the ventilation holes can be
concerned.
(b) Deformations or abnormal imprints in the seats of
the bolts / studs fixings.
(c) Leaks in tubeless tyres derived by micro-cracks
in the rim or by wear and tear marks on the rim-
tyre matching surface.
(d) Bent rim flanges (generally due to impacts against
obstacles)
(e) Wheels with greater run - out may cause vibrations
which may ultimately lead us to replace the wheel
assembly. (Refer wheel run - out procedure to
check wheel run out)
NOTE :
1. Newwheel must be equivalent to the original wheel
in terms of load capacity, diameter and rim with
offset and mounting configuration.
2. Any repairs to wheels which involves welding or
heating are not approved. All damaged wheels
should be replaced.
3. It is not allowed to perform any technical
modification on wheel assembly.
REPAIRING ATUBELESS TYRE PUNCTURE
NOTE :
Following procedure is only for reference. Please
follow manufacturer’s instructions provided with
puncture repair kit.
Following steps to be followed while repairing
a puncture of a tubeless tyre :
STEP 1:
Carefully inspect (visual inspection) for any
offending nails or sharp objects. If object doesn’t get
visualized, apply soap solution on tyre tread and look
for air bubbles which can indicate the air leakage
through punctured area.
NOTE :
If tyre pressure is too low, inflate it to the correct
pressure and proceed with
STEP 1
STEP 2:
Once the nail or foreign object is found, pull
the object out with plier and mark the punctured area
(e.g. by chalk).
STEP 3:
Insert a rubber sealant in T-shaped tool.
Deflate the tyre completely and push the tool in to
marked area such that rubber sealant gets inserted
in to the tyre until about 25 percent of its length
remains above the tread surface. Make sure that
rubber sealant is right through the punctured area.
STEP 4:
Pull out the T-shaped tool. Let rubber sealant
to set and seal for about five minutes and then inflate
the tyre to specified pressure.
STEP 5:
Once the tyre is inflated, cut off the visible
portion of rubber sealant (if present) by scissor. In
case the puncture is big and rubber sealant has not
completely sealed it, insert a second rubber sealant
at the point of leakage. This will only be needed if the
puncture is large.
STEP 6:
Inspect the tyre for more leaks and proceed
with
STEP 2
if another leakage is found.