11.22
L
Note:
Working from left side of engine, slide a plastic rod
into the water pipe and use it to remove the pump
shaft.
e
Attention:
Do not use a metal rod, as it would damage the wa-
ter pump gear!
•
Remove pump housing
e
Attention:
A damaged water-pump shaft can lead to leakage if
installed again!
•
Remove O-rings
•
Check contact zones of the two sealing rings on
the water pump shaft for tracking, damage and
wear
Wear data:
Housing internal Ø ................ 10.08 mm (0.3969 in)
•
Check water pump impeller for damage and de-
formation
Replacing shaft oil seals
•
Use a screwdriver to remove oil seals from hous-
ing
When installing:
L
Note:
Before installing, coat outside of shaft oil seals with
petroleum spirit; do not oil!
•
Coat shaft seal extruded edges with
MOLYKOTE 111
e
Attention:
Install shaft seals with flat surfaces facing each oth-
er!
•
Use drift punch,
BMW No. 11 7 611,
and shim to
install first shaft seal
•
Install shim (arrow)
•
Install second shaft seal without shim
L
Note:
Make sure that the water drain passage is not ob-
structed!
C1110321
11 7 611
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