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Repair instructions
Cylinder head, renovationCondition test, engine
Compression test
Special tool 9998009
A compression test is done in order to assess the
condition of the engine in a simple and reliable man-
ner, this indicates the sealing ability of the piston
rings and valves.
l
Warm the engine up and stop it.
l
Remove all the injectors and test each of the cyl-
inders in turn.
WARNING! Observe the greatest possible
cleanliness, to avoid getting dirt into the fuel
system. Plug the connections where injectors
and fuel pipes have been disconnected.
The compression pressure should be read off att nor-
mal start motor speed. A deviation of 10% below the
data given on page 6 in the “Technical data” manual
can be approved.
Low compression pressure in all cylinders indicates
worn cylinder liners and piston rings. If you find one
cylinder whose values lie below the others, this could
be caused by either poorly sealing valves, broken cyl-
inder rings or a cylinder head gasket which does not
seal properly.
Cylinder head, removal
Special tool nos. 9996643, 9996847*
TAMD61/62/63, TAMD 71/72
1
Remove both battery cables
2
Close the sea cocks and drain the water in the fresh
water and sea water systems.
If the engine has a hull cooling system, close the
valves for this system and drain the engine.
Applies to TAMD61/62, TAMD 71/72
3
Remove the shield over the heat exchanger and after-
cooler. Remove the filter.
4
Remove the pipe between the sea water pump and the
heat exchanger, and between the aftercooler and re-
verse gear oil cooler.
5
Remove the lid on the heat exchanger (rear heat ex-
changer on the TAMD71 and TAMD72). Remove the
connecting pipe to the aftercooler (or to the front heat
exchanger on the TAMD71 and TAMD72).
Release the breather pipe (plastic) from the expansion
tank.
6
Remove the coolant pipes between the heat exchang-
er and the coolant pump, and between the heat ex-
changer and thermostat housing.
Remove the heat exchanger.
7
Remove the connection pipe between the aftercooler
and the induction manifold and between the aftercool-
er and the by-pass valve.
Remove the aftercooler.
8
Remove the connection pipe between the starting
heater and the induction manifold. Hang up the brack-
et with the starting element relay.
Insert adaptor no. 9998009 into the injector hole and
attach it with the fastening brace and nut for the injec-
tor.
Fit a compression gauge to the adaptor and do the
compression test.
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