Venting - Volvo Penta TAMD60A Instruction Book

Both elements of the double filter and the lower element of
the single filter should be changed after 200 hours of ope-
ration or at least once every season, preferably at the be-
ginning. Close the fuel cocks at the tank and loosen the fil-
ter housing by screwing out the centre screw. Clean the
filter housings carefully.
The upper element of the single filter should be changed
once a year.
Use new gaskets when reassembling.
Vent the filters before starting through the plug 1 or the
cock 3.
13. Replacing fine filters
Replace both fuel fine filters after every 200 hours of ope-
ration. Under favourable conditions, i.e. if the fuel is of a
very high quality and free from impurities, the interval bet-
ween replacing the filters can be extended to 400-500
hours of operation.
However, the filters should be replaced at least once a
year, preferably at the beginning of the season.
At the same time replace the elements in the extra fuel filt-
ers. See point 12.
When working with the fuel system the highest possible
degree of cleanliness should be exercised in order to
prevent impurities entering the fuel system.
Replacing
1. Wash the filter head carefully, especially at the lower
edge, then screw off both filters and discard them.
2. Check that the new filters are absolutely clean and that
the gaskets are undamaged.
3. Screw on the filters by hand until the gaskets touches
the filter head. Then tighten them one further half turn
but not more.
4. Vent the fuel system according to the following
paragraph and pump up the fuel feed pressure. Check
for leakages.
14. Fuel system, venting
1. Open the venting screw (1) on the filter head of the fine
filters and pump up the fuel with the hand primer (2)
until the fuel is free from air bubbles. Tighten the screw.
(The handle on the pump is released by screwing
anti-clockwise.)
2. Open the venting screw (3) on the fuel injection pump
and pump up fuel until all air bubbles in the fuel
disappear. Then tighten the venting screw. (Applies
only to AQD70, TAMD70. The pump on
TAMD60-engines is vented directly through the fine filt-
ers.) Pump further to ensure that proper feed pressure
is obtained.
3. Start the engine. If the engine does not start almost at
once, slacken the delivery pipes at the injectors a
couple of turns. Then run the starter motor until fuel
runs out. Tighten the delivery pipes and then start the
engine.
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Replacing the fine filters