WÄRTSILÄ Vasa R22, Instruction Manual

Page: 193 / 297

5 Disengage the connection piece
from the fuel control
rack by removing the nut and pulling the screw aside. Put the
nut on its place at once to avoid loosing any part.
6 Turn the crankshaft so that the pump tappet roller rests
upon the base circle of the fuel cam.
7 Loosen the flange nuts (54) with the tool 806005 and lift
off the pump. Cover the oil supply inlet hole and the pump bore
in the engine block.
8 Clean the pump externally.
16.3.2 Mounting of injection pump
1 The pump is assumed to be assembled and cleaned
and the surface and bore of the engine block to be cleaned.
2 Check the O-ring of the pump body, grease and enter it
into the groove. Check that the fuel cam is not in the lifting
position.
3 Put the pump into place and tighten the flange nuts to
torque.
4 Connect the connection piece between the control
shaft and fuel control rack with the screw and nut.
Note! Center the joint by applying force between the fuel control
rack and connection piece, see chapter 22. Check that the
joint moves easily.
5 Remove the protecting tape or plugs and connect the
fuel feed pipes and leak fuel pipe.
6 Reinstall the injection pipe. Tighten the injection pipe
cap nuts to torque according to chapter 07. with the tool
806009.
7 Open the fuel supply to the engine and vent the fuel fil-
ter and injection pumps according to the instructions in chap-
ter 17. The injection pump is provided with a venting plug (42),
see Fig 16-1.
8 Check the fuel rack positions according to chapter 22,
section 22.3.1.
16.3.3 Control of fuel delivery commencement
For normal adjustment of injection timing the prelift can be
measured mechanically by a special tool but the beginning of the
effective pump stroke is determined by an indirect method, i.e. by
observing when the duct between the low pressure side and the
16 Injection System 22-9601
16-4 L’Orange