MAINTENANCE
EN / W-SQ25 for mobile applications / January 2009
23
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 can be assessed by
measurement of insulation resistance to earth (see section
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
1
Ensure there is sufficient fuel in the fueltank.
2
Loosen the air bleeding screw (1) 1,5 turns . See Fig
20.
3
Unlock liftpump plunger (2) (See fig 20) by turning it to
the left.
4
Operate the liftpump by hand moving the liftpump
plunger up and down, till fuel flows out free of air
bubbles.
5
Lock liftpump plunger (2) (See fig 16) by pushing it full
down and turning it to the right.
6
Tighten the air bleeding screw (1)
Fig. 20: Bleeding fuel lines 1 = Air bleeding screw
2 = Liftpump plunger
4.2.3
Valve clearance
When the engine is in cold condition both valves (inlet and
outlet) should have a clearance between 0.25 mm. The
adjustment has to be done at TDC (refer to § 5.4.2).
