Volvo Penta TAMD162C, Instruction Book

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Maintenance – Fuel system
Fuel pre-filter. Checking/draining
Check the fuel filter and drain off any water and contam-
inants through the drain plugs (5).
The engine should be off and allowed to stand for a few
hours before carrying out this check. Install plugs.
Fuel pre-filter. Installing new insert
As a rule, the filter inserts should be replaced when the
pressure gauge indicates a vacuum of 6–10 in. Hg* (at
engine idle) or 16–20 in. Hg (wide open throttle (WOT),
loaded engine). Otherwise replacement as recommend-
ed in the maintenance schedule.
Close the fuel cocks at the tank before dismantling if the
inserts are to be replaced with the engine stopped.
If inserts are to be replaced when the engine is running,
shut off the filter unit with the insert to be replaced by
turning the valve handle (1) to the horizontal position.
* Note: In. Hg = Inches of mercury.
Double pre-filters
1. Valve knob (both filters 3. Retaining screw
on-line in this position) 4. Cover
2. Pressure gauge 5. Drain plug
The inserts can be replaced while the engine is
running
Replacing the fine fuel filters
Fine fuel filters – Replace
1. Clean the filter mounting carefully.
2. Unsrew the old fuel filters and discard. Use special
tool to remove filter if necessary.
3. Check that the new filters are absolutely clean and
that the gaskets are undamaged. Lightly moisten
the gaskets with oil.
4. Screw on the new filters by hand until the gaskets
come into contact with the filter mounting. Then
tighten a further half turn by hand.
5 . Vent the fuel system according to the instructions
on the next page. Start the engine and check for
leakage around the filters.
Positions of the valve knob
Up: Normal operating position. Both filters on-
line.
Right: Left side filter insert can be replaced.
Left: Right side filter insert can be replaced.
Down: Both filters are off line.
1. Place a container beneath the fuel filters. Remove
the cover (4) and lift out the insert by rotating it.
2. Drain off any water or contaminants through the
drain plug (2).
3. Install new filter insert and fill container with clean
diesel oil. Fit the cover with a new gasket and
tighten it by hand.
Note. Moisten the gasket with diesel oil before
installation. Cleanliness! The fuel in the system
must not become contaminated.
4. Replace the other filter insert in the same way.
5. Both filter units on-line (turn the knob (1) up to the
vertical position).
6. Open the fuel line taps and check that there are no
leaks.