Operator`s manual

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I. Checks and adjustments
maintain it correctly.
IMPORTANT: The safety filter inside the main filter must
not be cleaned but must always be changed according to
the maintenance schedule. The purpose of the safety filter
is to prevent damage to the engine if the main filter should
fail.
I 1.2.1. Maintenance of main filter
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The air filter must not be cleaned more than five times,
after which time it must be replaced. Check when cleaning
that the filter and its seals are undamaged. A damaged
filter must always be replaced.
IMPORTANT: Never clean or remove the air filter unless it
is absolutely necessary. When removing the air filter there
is always the possibility that dirt can enter the induction
system of the engine.
Cleaning the main filter
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Use clean and dry compressed air with a max. pressure of
500 kPa (5 bar).
1. Direct the air flow against the inside of the filter along
thefolds.Donotholdthenozzlecloserthan3 --- 5 c m .
2. Then direct the air flow against the outside of the filter
along the folds and after this against the inside of the
filter again.
3. Check the filter and its sealing surfaces by means of a
torch. Replace the filter if any holes or other defects are
discovered.
IMPORTANT: See service instructions on page 69 and
replace safety filter in the air cleaner (maintenance every
1000 hours or yearly page 82).
I1.3. Maintenance---cooling system
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The following action should be taken to make sure that
the cooling system functions correctly:
--- Check the coolant level (see maintenance program daily
checks).
--- Check the fan belt tension (see maintenance program
weekly checks).
--- Clean the radiator honeycomb externally by means of
compressed air or by flushing through with water.
I 1.3.1. Coolant
The cooling system is filled with a mixture of water and
a n t i --- f r e e z e a g e n t o n d e l i v e r y. T h e a nt i --- f re e z e a g e n t a l s o
has the property of preventing rust from forming in the
cooling system. However, the anti---rust properties of the
agent diminish with time so that it is important to change
the coolant at regular intervals. A suitable mixture is half
anti---freeze agent and half water but the manufacturer’s
directions should always be followed (see cleaning of
cooling system, Service at 2000 hrs intervals on page 85).