Maintenance
5556−1/A1
Winterthur Gas & Diesel Ltd.
7/ 18
3.4 Pump Cylinder - Removal
Note: The pump cylinder (7, Fig. 8) and
pump plunger are not
interchangeable and must stay
together as a unit.
1) Turn the fuel pump until the pump
cover (2) points up.
2) Remove the screws (1) symmetrically.
3) Attach the lifting tool 94552 to the
pump cover (2).
D Take care of the contact surfaces and put
all parts in a safe storage area.
4) Remove the pump cover (2).
5) Remove the O-Ring (8)
6) Remove valve block (4) with clamping
ring 94550, see Fig. 9.
7) Remove the retaining screw and fluted
sealing ring (5).
8) Carefully remove the pump cylinder (7,
16kg) from the housing (6). Make sure
no surface gets damaged.
3.5 Non-Return Valve −
Disassemble
1) Remove the two screws (6, Fig. 10).
2) Remove intermediate piece (1) and the
spring (5).
3) Remove the valve body (3) from valve
block (2).
4) Remove the two O-rings (4).
Fuel Pump: Disassemble, Assemble
2015
Fig. 8
Fig. 9
5
1
2
3
4
6
7
1
6
5
4
2
3
WCH03052WCH03053
WCH03053
8
94550
Fig. 10
WCH03102