5-7
1
2
3
4
2
5
Overhauling the water pump
– Remove the washer 1 from the water pump shaft and pry the shaft
sealing ring
2 out of the case.
NOTE: if the water pump wheel cannot be removed because it is being
held by residual thread adhesive, the water pump shaft and the water
pump wheel can be pressed out from the inside after the lock ring
4 is
removed.
– Remove the outer lock ring
3 from the water pump shaft using
suitable pliers.
– Press the water pump shaft out of the bearing from the outside to
the inside. The inner lock ring
4 does not need to be removed.
– Heat the case evenly in an oven at 150° C; the old bearing will fall
out of the bearing seat by itself and the new bearing can easily be
pressed into the bearing seat by hand. The bearing should fit flush
and tightly after it cools down. If not, press in with the pressing tool
600.29.043.060.
– Insert the water pump shaft in the new bearing from the inside to
the outside.
NOTE: the recess in the water pump shaft should point towards the
inside.
– Mount the lock ring
3.
– Place the protective sleeve
5 585.29.005.000 on the pump shaft
and press in a new shaft sealing ring
2 until flush using the
pressing tool 600.29.043.040. Mount the washer
1.
NOTE: To replace the water pump seal ring see Technical Information,
Chapter 1.
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