Maintenance; Alternator; Engine; Preliminary Instructions - Whisper Power m-sq25 User Manual

4 MAINTENANCE

4.1

Alternator

The alternator does not require any maintenance. Periodic
inspection and cleaning is recommended, depending on
environmental conditions.
However when the alternator has been idle for a long
period attention to winding condition is recommended.
The condition of windings
measurement of insulation resistance to earth. (See 5.3.5
Meggering)
The alternator bearing is greased for life and is therefore
not regreasable
4.2

Engine

4.2.1

Preliminary instructions

All regular maintenance can be carried out when the
enclosure is open. When oil and dirt has gathered in the
enclosure measures have to be taken to avoid spilling oil
and polluting the environment.
The first service on the engine should be carried out after
50 hours of its life and after a major overhaul. In the first
50 hours the engine should receive special attention:
Long periods of light or no load running in the first 50
hours may lead to cylinder glazing and high oil
consumption.
For the same reason it is of the greatest
importance to use the right oil specification.
The first time starting up or after running out of fuel it could
be necessary to prime the fuel system.
4.2.2

Bleeding fuel lines

Ensure there is sufficient fuel. The Whispers are self
bleeding. To check the well functioning release the bleed
screw on the high pressure fuel pump. Turn loose the cap
of the fuel lift pump, and move the piston up and down to
prime the system. Retighten the bleed screw when no
further air bubbles are expelled. Retighten the cap when
ready.
EN / M-SQ20 / 25 / November 2010
can be assessed by
01 Injection pump air bleeding screw
02 Hand operated fuel lift pump
Fig. 18 Bleeding fuel lines.
4.2.3

Valve clearance

When the engine is in cold condition both valves (inlet and
outlet) should have a clearance of 0.25 mm. The
adjustment has to be done at TDC (see 5.4.2).
4.2.4

Replacing fuel filter

Filter change depends on contamination of the fuel, but
should be done however, at least every 300 running hours.
A clogged filter results in a lack of output of the generating
set.
01 Fuel filter
Fig. 19 Location fuel filter cartridge
MAINTENANCE
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