– When the engine is at a standstill and has
cooled down, the coolant level must be visible
between the tank’s
MIN
and
MAX
marks; if the
engine is warm, the level may be slightly
above the
MAX
mark (Fig. 31).
Loss of coolant
Work on the cooling system must not
be effected while the engine is warm –
risk of scalding !
The cooling system is pressurized.
In most cases, loss of coolant is due to leakage
in the cooling system.
– In this case, check the cooling system for leak-
age and eliminate the reason immediately – in
case of doubt, consult the
HATZ Service
.
In case of leaky hose connections, re-tighten
the hose clamps.
Note:
If the cooling system is perfectly tight, loss only
occurs if the coolant is boiling and thus is
pressed out of the cooling system via the cap on
the expansion tank.
This may be due to contamination in the radiator
fin area (Chapter 5.2.4) or to engine overload.
Add coolant
– refer to Chapter 4.1.2.
5.3.
Maintenance every
250
operating hours
5.3.1. Change engine oil
The engine must be standing level and be
switched off.
Only change the oil when the engine is warm.
Danger of scalding from hot oil !
Trap the old oil and dispose of it in
accordance with local legislation.
32
– Take out oil drain plug
1
and allow the oil to
drain completely. Possible draining positions,
refer to Chapter 2.
– Clean the oil drain plug
1
, fit a new washer
2
,
insert and tighten.
– Add engine oil, Chapter 4.1.1.
5.3.2. Check water trap
The water trap inspection interval depends
exclusively on the water contained in the fuel
and on the care applied in refuelling. It may be
admissible to extend the intervals, or it may be
necessary to considerably shorten the intervals.
26
