Iran Tractor ITM 470, Инструкция для оператора

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4
Maintenance and adjustment
77
a given concentration of anti-freeze/water
solution. See ‘Capacities’ page 109 for the
capacity of your cooling system.
DO NOT use more than 50 per cent
anti-freeze solution in the cooling system
unless the ambient air temperature will be
less than -35°C. More than 50 per cent
decreases heat transfer and will cause the
engine surface temperature to be more
than normal.
Anti—freeze Concentration
Anti
freeze
concentrati
on
Specifi
c
gravi
ty
Fi
rst crystal
formati
on
°C
Dry i
ce point
°C
10
15
20
25
33
50
1.016
1.025
1.034
1.042
1.059
1.086
-2.2
-4
-7
-11
-17
-36
-6
-11
-18
-26
-36
-51
Table 1:
It should be remembered that an anti-
freeze solution not only prevents freezing,
it also contains an anti-corrosion additive
that protects the cooling system. The
mixing of different makes of anti-freeze
can lead to the loss of corrosion protection
and is therefore not recommended.
IMPORTANT
If an anti-freeze solution is not used
during frosty weather, the coolant must
be drained after work to prevent damage
from freezing. Use the procedure under
draining the cooling system.
Radiator
Check the radiator fins for block-
age —Flexible maintenance.
The radiator fins must be checked for
blockage, they can be cleaned by blowing
with compressed air or a high-pressure
washer not exceeding 7 bar (100 Ibf/in2).
Clean from the rear of the radiator and
remove the side panels to allow debris to
escape.
Fins blocked with oily substances may
be cleaned with a detergent solution, pref-
erably applied with a high-pressure washer.
CLUTCH
Main clutch adjustment
Check the clutch adjustment every
100 hours.
When the tractor enters service, or has
new clutch linings fitted, the clutch must
be carefully bedded in (See Running-in Op-
eration Section page 37). The clutch pedal
linkage must be checked frequently during
the first 50 hours and necessary adjust-
ments made immediately. Subsequent
checks must be made at 100 hour intervals.
Fig. 30:
2
1