32 AB Volvo Penta / Diesel Engine TAMD71B
7.11.2 Checking/tensioning drive
belts (when mounted)
Check the belt(s) for wear. Belts which work in
pairs should be replaced at the same time.
Tensioning drive belts
It should be possible to depress the belts 10 mm
(0.4") between the pulleys at the correct tension.
Tighten screws (A).
7.11.3 Checking valve clearance
This check should be left to authorized service
personnel.
NOTE! The clearance must never be checked
with the engine running – the engine must be
stopped – cold or at operating temperature.
7.11 Maintenance – Engine
7.11.1Replacing crankcase
ventilation filter
1. Remove the old filter by unscrewing it coun-
terclockwise.
2. Check the rubber gasket in the mounting, re-
place if necessary. Screw on the new filter by
hand.
3. Check the drain hose is not clogged.
Fig. 7.4 Filter for crankcase ventilation
1. Filter
2. Relief valve
Fig. 7.5 Drive belts
Fig. 7.6 Valve location
❍ = Inlet
● = Exhaust
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