Technical data

62
Repair instructions
Timing gear, disassembly
Special tools: 9992655, 9992
6
58, 9992697
Timing gear
1 Crankshaft gear 5 Injection pump drive gear
2 Idler gear 6 Coolant pump drive gear*
3 Oil pump drive gear 7 Timing gear
4 Idler gear 8 Sea water pump drive gear
* Not installed on TAMD63.
Preparatory work
TAMD61, TAMD62, TAMD71, TAMD72
Free the oil filter and bracket, and hang it up.
Alternatively, the pipes between the engine and
oil filter can be removed. Remove the filter and
bracket. Avoid spilling oil.
Remove the oil filling pipe at the front of the en-
gine. Remove the connection pipe to the coolant
pump.
Remove the sea water pump and connection
pipes.
Remove the alternator and drive belts. Remove
the alternator brackets, the expansion tank and
the connection pipe to the thermostat housing.
Remove the electrical junction box from the ex-
pansion tank and hang it up.
Remove the shield plates above the heat ex-
changer and remove the aftercooler. Remove the
two plastic pipes from the expansion tank.
Remove the lid at the front of the thermostat
housing and the connection pipe to the coolant
pump.
Remove the coolant pump.
Turn the engine round in its normal direction of ro-
tation until the no. 1 piston is at TDC after the
compression stroke (0° on the flywheel).
TAMD63
Remove the belt tensioner, free the alternator and
hang it up.
Remove the alternator bracket.
Remove the circulation pump drive gear (4
screws).
NOTE. The work noted under preparatory work does
not need to be done if a complete renovation is going
to be done (removal of all shafts and gears), it only
needs to be done if work is only going to be done on
part of the timing gear.
IMPORTANT! Never turn the crankshaft or cam-
shaft when the timing gears have been removed
and the cylinder head is still in place. The pis-
tons and valves can come into contact with
each other and be damaged.
1
Remove the crankcase pulley, if one is fitted, plus the
torsional damper, which is screwed to the polygon
hub.
IMPORTANT! The torsional damper must not be
subjected to impacts. The damper characteris-
tics can be completely changed if the shape of
the fluid chamber is changed by dents.