Callesen Diesel Page 4 of 12 Sheet No. 7-94-2A
Never alter the blocking of the governor and the toothed rods of the fuel pumps. In case the lead
seals are broken, the factory's guarantee will cease to be valid. The adjustment has been made so
by the factory that the output of the engine can be about 5% above normal full load.
When the engine is working at full load, and the governor rod is free, as described above, the ex-
haust should be nearly smokeless. It is important to check this, as too much development of smoke
means that the engine is not in order, and that it should not be operated before the defects have
been repaired. At full load the exhaust temperature should be about 450 - 500ºC, for turbocharged
engines up to 525ºC.
Smoky exhaust after the first start may be due to defects or faults arising during installation, for in-
stance:
1. The engine does not get sufficient air for combustion because the engine room is too tightly
closed and the necessary ventilation is lacking; there should always be one or several ventilating
ducts having a total area at least equalling the size of the suction pipe of the engine.
2. The suction filter on the suction manifold (turbocharger) of the engine may be clogged.
3. Air in the fuel system.
4. Dirt in the fuel system (filter clogged).
5. The exhaust piping partly clogged or a too small dimension is used. Use always the same pipe
dimensions as the exhaust manifold.
6. Loading pressure too low.
Remedies:
1. Check whether the ventilation is in order.
2. Check the filter and remove all impurities from the engine room.
3. Vent the fuel system.
4. Check fuel filters: The oil should be able to pass through in full jet when pumping with the hand-
pump.
5. Check the exhaust piping.
6. See turbocharger instruction book "Cause of working troubles".
During the first running of the engine under loaded condition, see to it that the cooling water tem-
perature (thermometer on the foremost cylinder head) in the freshwater system is rising to about
70ºC. If not, something is wrong with the thermostat which is built into the by-pass piping of the
freshwater system.
Should the engine get too hot, it may be because of air in the system or incorrect fitting of the ex-
pansion container. The cooling water (seawater) which passes through the cooler and from there
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