Westerbeke 50 - Page 46

LIFT PUMP
Remove and refit
Removing
I NA
19.45.09
2 Disconnect the two pipes from the lift
pump.
3 Plug the supply pipe from the fuel
tank.
4 Remove the securing nuts and
washers.
5 Remove the lift pump and gasket.
Refitting
6 Reverse
the proced ure in I to 5.
7 Bleed
the fuel system, se.e 19.50.07.
LIFT PUMP
Overhaul 19.45.16
DismantlinR
1 Remove the lift pump, see 19.45.09.
2 Scribe a reassembly mark across
the
body joint flanges.
3 Remove
the domed cover and sealing
ring.
4 Remove
the filter.
5 Remove
the securing screws and
separate the top and bottom halves of
the pump.
6 If the valves require renewing, lever
them out carefully.
7 Remove
the valve gaskets.
8
Press the diaphragm downwards,
rotate it through 90° and withdraw it.
9 Lift
out the diaphragm spring.
10 If the diaphragm rod seal is to be
renewed, carefully
withdraw the seal
retainer.
11 Lift out the seal.
12
If the rocker arm pin or linkage is to
be renewed, secure the rocker arm in a
vice
and tap the face of the pump
mounting flange to dislodge the rocker
arm pin and its components.
Reassembling
13 Renew
any components which are
worn
or damaged.
14 Reverse
the procedure in 1 to 12,
noting:
a
If the diaphragm spring is
renewed, ensure that the new
spring
is of the same colour as the
original.
17
3
8
3~
'ccCO~-=--""
_----0--'
4
7~<§>-7
~
~
b If the valves are renewed, enS\lre
that they are fitted to operate in
the correct directions and staked
in.
NOTE: The inlet port is indicated by
an arrow on the pump body.
~
CD