10) Water Pump Housing Reassembly - Rotax 912 Series Maintenance Manual

13.3.10) Water pump housing reassembly

Effectivity: 912 Series
AIRCRAFT ENGINES
MAINTENANCE MANUAL II
See fig. 085
Place gasket Q and attach water pump housing W with 2 Allen screws E
M6x90 and 3 Allen screws R M6x35 with lock washers to the ignition
housing, tightening to 10 Nm (90 in.lb).
The Allen screw T M6x35 at the lowest position reaches
CAUTION:
into the water chamber, therefore it is of stainless steel
and fitted with a sealing ring Y 6x10. This gasket ring
has to be fitted and mustn't be replaced by any other part.
Visually check whether the impeller scuffs in the pump housing. This can
be recognized by scuffing traces in the pump housing or on the impeller.
If necessary, the axial position of the impeller can be corrected to achieve
an optimum gap (see para 13.3.8).
Insert O-ring U into water pump housing and fit the water inlet elbow I in
the position marked before disassembly with 2 Allen screws O M6x20 and
tighten to 10 Nm (90 in.lb).
NOTE: The water inlet elbow is symmetrical and can be fitted
turned by 180° if required.
Fit coolant hoses and fix them with genuine hose clamps.
CAUTION: Do not tighten hose clamps, excessively in order not to
damage the hose!
00392
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fig. 085
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Initial issue, Jan. 01/2002
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