Iran Tractor ITM 470, Operators Instruction Book

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4
Maintenance and adjustment
87
Steering stop adjustment
1. Place the jack under the engine sump
and raise the tractor enough to allow
the axle to swing from one stop to the
other.
2. Turn the front wheels to full lock and
check that the inside edge of the tyre
does not foul the tractor.
3. Carry out the same check on the other
lock.
4. If necessary, adjust the steering stops
(1 Fig. 51) on both sides so that a foul
condition will not occur. Tighten the
lock-nuts (2) after adjustment.
Fig. 51:
1
2
REAR TRACK ADJUSTMENT
Pressed steel wheels
WARNING
When changing, repairing or transfer-
ring wheels observe the following pre-
cautions:
• Use a jack that has adequate capac -
ity to lift your tractor and is in good
repair.
• Ensure that both the tractor and
jack are on firm level ground.
• Use axle stands or other suitable
blocking to support the tractor at
all times when changing wheels and
tyres.
• Never use concrete blocks, bricks
or old rotted timbers for support.
They can collapse - even under light
loads.
• DO NOT put any part of your body
under the tractor or start the engine
while the tractor is on the jack.
• Tractor wheels are heavy, handle
with care and ensure, when stored,
that they cannot topple and cause
injury.
• Where tyres with liquid ballast are
used, a crane may be required to
manoeuvre the wheels, due to their
considerable weight.
The different track widths are obtained
by altering the position of the rim in rela-
tion to the disc, or by reversing the wheels
and transferring them from one side of the
tractor to the other.
Adjustment is as follows:
1. Select the required track settings. See
Table 3.
2. Slightly slacken either the wheel to
axle, or the rim to disc nuts, or both
according to requirements.
3. Using a jack capable of lifting 1500 kg
(3300 lb) raise the rear wheels just
clear of the ground.
4. Remove the rim from the disc or the
complete wheel, or both and assem-
ble them with the rim and disc in their
new positions.
NOTE
If the wheels are reversed, they must
be transferred to the opposite side of
the tractor so as to maintain the correct
tyre tread direction.