3
4
Removing and installing engine water pump
42
Installing engine water pump
Fig. 3
Renew O-ring.
Fit water pump with new seal.
Tighten the securing bolts with the prescribed tor-
que.
Fig. 4
Refit V-belt pulley and coolant neck.
Insert thermostat insert, see page 40.
Fit and tension the V-belt see Page 126.
Fill coolant, see page 39
Note:
Exchange or repair water pump only if it has been found to be leaky.
The design of the coolant pump mechanical cassette seal permits small amounts of coolant to
pass through it. This coolant passing through results in a trace of drained coolant below the drain
bore. The water pump need not be exchanged or repaired because of this trace of permeating
coolant.
For this reason, before replacing or repairing a coolant pump, ascertain
D whether the cooling circuit shows visible and recurring signs of coolant loss; if yes
D whether the coolant loss is caused by spillage from the expansion tank (e.g. too full) or by
other leakages from hoses, radiator etc.
Water pumps must be exchanged only if water drips visibly while the engine is in operation or af-
ter the engine has been switched off.
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