17
– Check that connecting hose „3“ and hose clips
„4“ are in good condition and not leaking
(fig. 17).
18
– Run the engine up to maximum speed briefly
and check that indicator lamp „1“ (depending
on version) comes on briefly or that the red
zone is visible in maintenance indicator „3“.
5.2.3. Check the cooling air system
Heavy contamination is an indication that in-
creased dust accumulation necessitates acorre-
spondingly shorter maintenance interval.
19
1
– Inspect air inlets and outlets for coarse soiling
such as leaves, dust accumulation etc., clean
if necessary (fig. 19, chap. 5.3.4.).
The temperature indicator „1“ – if installed – will
light up as soon as the engine becomes
too hot.
Shut down the engine immediately !
5.3.
Maintenance work every
250
operating hours
5.3.1. Maintenance work on oilbath
air cleaner
20
– Take off oil tank „1“ and clean it.
– Take off rain cap „2“ or cyclone-type dust trap
„3“, and clean.
– Clean right through intake pipe „4“
– Check condition of sealing ring „5“ and renew
if necessary.
– Add engine oil to the oil tank up to mark „6“
and re-assemble the oilbath air cleaner
(fig. 20, chap. 4.1.2.).
If the filter packing is severely contaminated
with dust and dirt, the upper part of the air
cleaner must also be cleaned as follows:
