TIRES MOUNTING AND DISMOUNTING
Tire fitting shall be performed in a tire fitting section or premises meant for these operations
using special equipment, accessories and tools.
During tire fitting it is strictly forbidden:
–to start dismounting the tire from the rim without making sure it is completely deflated;
–to dismount the tire from the automobile without taking measures for preventing rolling of the
automobile;
– to use hammers, crow-bars and other heavy things that can deform wheel parts;
– to mount the tire on non-corresponding wheel rim;
– to use tires having edge fins, cuts and other damages and wheels having geometry violation of nicks,
cracks, burs, rust markings on the landing surface; damages preventing the mounting process;
– to start up tires pumping without assurance that it is in the right position on the rim
– to pump tire out of special barrier and in road conditions without safety regulations
compliance
- Dismounting of one from coupled wheels without use of jack, with collision of second wheel
on lugs;
– Pump the tire up to pressure, which exceeds set standards
Pump the tire, without taking off from the truck at decompression in tire more than 40 percent
from nominal.
It is necessary to remember that wheels (metallic part) related to the category of nonrepairable,
that is why in crack detection the wheel is rejected i.e. it should be changed.
Fastening of spare wheel
Fastening of spare wheel of MAZ-631236, 534035 trucks is indicated on the Figure28.
For a wheel descending
-unscrew nuts 4 mounting holder 6 to the bracket 1
- lower a wheel, revolving by fixed driver in clamping 10 (handle of pump of cab lifting is
used) anticlockwise
- set free holder from wheel disk
Wheel lifting and its fastening are made in reverse order. If during the wheel lifting, the
resistance of shaft revolution is absent or it is insignificant, so it is necessary to draw up nut 7,
regulating effort of spring disk pack 8.
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