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Source – Volvo AB, Göteborg, Sweden page 20(35)
Reprint 2001 Karl Eric Målberg
reason it must be changed at regular intervals, after about every 6,000 miles
(10,000km). This operation should preferably be carried out by a Volvo workshop.
If the oil cleaner is changed without the engine oil being changed, 0.5 litres should be
added to the engine.
12 Valve clearance
Let your Volvo workshop check the engine valve clearance after every 3,000 miles
(5,000 km). Excessively small valve clearance can easily cause burned valves.
13 Clean the fuel filter
In order to avoid dirty fuel from being
pumped into the carburettors, the fuel
filter should also be serviced. Due to the
accessible location of the filter, it is very
easy to clean.
The fuel filter should be cleaned after
every 3,000 miles (5,000 km). Loosen
the nut and move the bail to one side.
Remove the glass bowl and strainer and
clean these parts. When the filter is being
re-fitted, male sure that the gasket seals
properly
14 Change the air cleaners
The air cleaners on the SU carburettors
should be replaced with new units after
every 12,500 miles (20,000 km). The old
unit should be thrown away since the
cleaner and the filter are built together in
one unit. When driving on dusty roads, it
may be advisable to change the air
cleaners more often, for example every
6,000 miles (10,000km)
NOTE. The ventilation air to the lower
part of the carburettor suction chambers,
passes the air cleaner through the two
upper holes in the cleaner so it is
important to see that the gasket and
the air cleaner are fitted correctly in each case, since otherwise theses holes will be
blocked
15 Check the fan belt tension
After about every 6,000 miles (10,000km) you should let your Volvo Workshop check
that the fan belt tension is correct. Due to wear or dirt, this belt can start slipping and
the result will be poor cooling and poor generator output. You can easily check the
tension by pulling the tips of the fan in their correct direction of rotation. There should
be a definite resistance to movement (at a pulling power of 12-14 lb= 5.5-6.5 kg).
before the belt starts slipping. A simple but not so reliable way of testing belt tension
is to press the fan belt with your thumb at a point midway between the generator and
the fan. It should be possible to press down the belt about 1/6” = 3-4 mm with normal
thumb pressure.