TROUBLE SHOOTING
EN / W-SQ16 for mobile applications / January 2009
33
The T.D.C. of compression stroke can be found by
aligning the T.D.C. mark (-0-) on the crankshaft pulley with
the mark on the gear case (ref. to fig. 25).
First align the T.D.C. mark for the No. 1 cylinder. Confirm
that the valves do not move up or down when the
crankshaft is turned about 20 degrees in normal and
reverse direction of rotation.
Fig. 25 Finding TDC
If the rocker arms move piston no.1 is on the T.D.C. of the
intake or exhaust stroke. In such case turn the crankshaft
360° in the direction of engine rotation again. No. 1 piston
is now at T.D.C. of the compression stroke.
After adjusting the valves of cylinder 1 adjust the valve
clearance of the remaining cylinders in firing order 1 – 3 –
4 – 2. Turn the crankshaft 180 degrees clockwise from the
T.D.C of cylinder 1 to the T.D.C of cylinder 3. and turn the
crackshaft 180 degrees further clockwise to the TDC of
cylinder 4 and adjust the valves. And again 180 degrees to
adjust cylinder 2.
5.4.3
Disassembling instructions
It could be necessary to disassemble the generating set
for repair or checks. Following instructions will help:
1 The design of the W-SQ16 makes it possible to do
most repairs on the spot. The connections of the
alternator are very accessible. The same is true for
the diode of the rotor
2 The sound shield can be disassembled according to
exploded view below (figure 28)
3 To take the generating set out of the soundshield all
hose and cable connections have to be taken off. The
set is fixed to its base by four rubber mountings and
can be loosened by removing the four nuts from the
bolts of these mountings and by removing the
safeguards. The easiest way to get the generator out
of its capsule is by lifting the set using the lifting eyes
4 One can take off the complete alternator housing.
Before the alternator can be taken off all cables and
wiring have to be loosened first.
5 The rotor can be taken off by removing the bolt which
goes through the shaft (normal clockwise threaded).
The end of the shaft is specially threaded to push off
the rotor from the conic stub shaft, which is on the
flywheel, using a 10mm rod of 270mm length and a
M24x2 bolt.
6 Reassembling the generating set one should take
care of alignment, cleaning the surfaces between
engine and alternator and tighten the bolts crosswise
and gradually.
7 Use Loctite 577 to seal the fittings, which should first
be cleaned and made free of oil and grease.
8 Test the generating set first outside its soundshield
and check very carefully for leakages before putting it
back in its enclosure.
