Volvo MD5A, Workshop Manual

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33. Clean the pump housing carefully and replace worn
parts. Refit the manual pump arm. Press in the diaphragm
and connect the pump arm to the diaphragm centre pin.
Then push the spindle in and tighten it with the screw. Note!
Do not forget the washer under the screw.
Lay the gauze filter on the upper housing and screw the
cover and the gasket tight. Press in the pump arm 3,
assemble the two housing halves and fit the spring retainer 2
on the mechanical pump arm 3. Note that the spring retainer
can only be fitted one way. Replace the spring next and the
0-ring 4 which provides a seal for the engine.
Crankshaft
35.
Remove the circlip with circlip pliers. Then remove the
gear drive. Use a press or a gear puller. Clean the
crankshaft and carry out control measurements of all the
bearing surfaces. Grind the shaft where necessary. See
technical data.
Fuel filter
34.
When the filter insert is changed the centre screw 1 is
removed allowing the filter holder to be removed. Afterwards
remove the filter insert by lifting the plastic loop 4. Wash the
filter holder clean and fit a new filter. Fit a new packing
washer 5 and refit the holder to the cover with the centre
screw.
36. Place the key in the crankshaft’s key slot. Heat the
gearwheel to approximately 100
0
C (212
0
F) (no more) and
press it onto the crankshaft. Note! The marking on the
gearwheel shall face outwards. Refit the circlip on the
crankshaft.
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