CHECKS AND SERVICE
CHECK-TIGHTEN THE CYLINDER HEAD BOLTS
Authorized personal should check-tighten
the bolts with a torque wrench before
starting a new or newly reconditioned
engine for the first time and again after it
has been in operation for 20 hours.
Check the valve clearance after tightening
up the bolts. The bolt-tightening sequence
can be seen from the adjacent illustration.
Concerning the tightening torque, see
under “Technical Data”.
CHECK THE COOLING SYSTEM
The cooling system is functioning normally when the “Temp” lamp is out and the siren is
quiet. Excessive temperature (“Temp” goes on, the siren sounds) may be due to the
following: clogged water intake, defective impeller or flange in the sea-water pump,
faulty thermostat or temp. gauge sender. Look out for water penetration during all
work on the cooling system.
The impeller can be damaged due to,
Check and replace the impeller
e.g., shortage of water. Remove the cover
on the water pump. Pull out the shaft the
length required in order to screw out the
impeller lock bolt. Hold against the shaft
and pull off the impeller. If the impeller is
damaged, fit a new one. NOTE! If the
shaft has been removed entirely from the
pump housing, check when re-fitting it
that the D-ring between the sealing rings
in the housing gets onto the shaft.
Tighten up the impeller with the lock bolt.
If the impeller and shaft can be rotated
then the flange is defective. A new flange
can be fitted after the pump has been
removed. Fit the cover with its gasket.
15
| Categories | Volvo Penta Manuals |
|---|---|
| Tags | Volvo Penta MD5A |
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| Copyright | Attribution Non-commercial |
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