WÄRTSILÄ VASA 6L32, Instruction Manual

Page: 272 / 394

5 The pressurized fuel having a step pressure wave
is en-
tering to fuel injection valve. Now with a bigger volume than
with the standard hand test device, the nozzle reaches full
needle lift. After the test the pressure in high pressure line will
be reduced by opening the draining valve (3).
16.4.6 Mounting of injection valve
1 Check that the bottom surface
of the bore in the cylin-
der head is clean. If necessary, clean or lap the surface by the
tool 800075. If lapping is necessary, the cylinder head must be
lifted off. For lapping, a steel washer and fine lapping com-
pound is used. Note! The injection valve seals directly to
the bottom of the cylinder head bore without seal ring.
2 Put new O-rings on the injection valve.
Lubricate the
O-rings with lubricating oil or grease.
3 Fit the injection valve
into the cylinder head bore and
tighten the nuts by hand. Note the guiding pin position.
4 Put new O-rings on the connection piece
and on the
protecting sleeve if it has been removed.
5 Mount the protecting sleeve on the connection piece
if it has been removed. Screw in the connection piece by hand.
Tighten to correct torque. Tighten the protecting sleeve screws.
Friction ring design, see step 6.
6 Mount the connection piece
into the cylinder head.
Screw in the connection piece by hand. Tighten to correct
torque.(Friction ring design only, see Fig 16-4.)
7 Tighten the fastening screws (16)
of the flange (18) to
correct torque, see section 07.1. (Friction ring design only.)
8 Tighten the fastening nuts
of the injection valve to correct
torque, see section 07.1, in steps of 10 - 20 Nm.
9 Mount the injection pipe
and tighten the cap nuts to
torque.
10 Close the covers.
16 Injection System 32-200627-01
16 - 18 WÄRTSILÄ 32