Callesen Diesel Page 11 of 12 Sheet No. 7-94-2A
4. Too low charging pressure. Filter for turbocharger or the turbocharger itself should perhaps be
cleaned.
5. The fuel pumps are not equally adjusted (see adjustment under "Idling"), or they might be worn.
The delivery valve spring of the fuel pump may be broken.
6. Leaky valves.
7. Coked piston rings.
8. Worn out pistons and cylinders.
9. Worn or cracked bearings.
10. Defective fuel feed pump (the spring may be broken). Perhaps the piston is hanging because
the pump flanges are unevenly tightened. Whether the fuel pump is working can be checked by
loosening the handle of the hand pump; the handle should move up and down, when the
engine is working.
11. The clutch is slipping because the oil pressure is too low (too little oil), or the clutch is worn out.
If the oil pressure in the clutch and reversing mechanism fails, the cause may be a sticking
overflow valve, which must be cleaned and adjusted. The overflow valve is placed in the
portside under the cover on which the clutch oil cooler is mounted. As to adjustment - see sheet
7-67 under clutch. If the oil pressure failure is due to a defect in the hydraulic system, which
cannot be remedied at sea, you can manage this way:
Remove the cover on the starboard side of the clutch. Screw the six 3/4" screws with square
heads, which are supplied, into the aftermost clutch cone through the large openings in the
clutch case. Take care that they are tightened smoothly and exactly equally to avoid jamming of
the cones as in this case the clutch will slip. Loosen the propeller shaft flange coupling from the
engine and draw it so far backwards that the two half pipe sections can be laid around the pull
rod. In case they cannot be fitted because the propeller shaft cannot be pushed far enough
astern, the sections can be sawn into pieces and laid at two or more times. The flanges should
then be tightened together again. Take care that the flange couplings are completely together.
The propeller is then blocked at "Ahead".
12. The propeller shaft or the propeller may be damaged.
The faults must be remedied, and as far as possible it is recommended to have this done by a
skilled expert.
REGULATIONS FOR FUEL OIL AND LUBRICATING OIL
FUEL OIL.
The engine is tested on the factory's testbed with the fuel oil (gas oil) which is usually available on
the market. If the use of another type of fuel oil might be intended, the factory should be asked for
advice.
LUBRICATING OIL.
For lubricating of the engine a good grade diesel engine oil, which is highly self-purifying, a so-called
D3 oil
should be used. Such an oil can be supplied by all recognized oil companies. All the year
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