Section 06 STEERING AND PROPULSION
Subsection 03 (JET PUMP)
smr2009-006-008_a
TYPICAL — MEASURING IMPELLER SHAFT RADIAL PLAY
1. Dial gauge
2. Measure close to impeller hub end
RADIAL PLAY
0mm(0in)
Excessive play can come either from worn bearing
or damaged jet pump housing bearing surface.
LEAK TEST
Whenever performing any type of repair on the jet
pump, a leak test should be carry out.
Proceed a
s follows:
1. Remove impeller cover. Refer to
IMPELLER
COVER
in this subsection.
2. Install the
PRESSURE CAP (P/N 529 036 172) on
pump housing.
529036172
3. Connect the VACUUM/PRESSURE PUMP (P/N 529
021 800)
to the pressure cap fitting.
5290218002
smr2008-029-005
TYPICAL
4. Pressurize pump.
LEAK TES
T PRESSURE
Maximum 70 kPa (10 PSI)
5. Pump mu
st maintain this pressure for at least
5 minut
es.
NOTICE
Repair any leak. Failure to correct a
leak will lead to premature wear of pump com-
ponents.
NOTE: If there is a pressure drop, spray soapy
water around cover. If there are no bubbles, im-
peller shaft, impeller shaft seal, or jet pump hous-
ing is leaking through porosity and has to be re-
placed. Jet pump unit has to be disassembled.
NOTE: There may be 2 or 3 bubbles coming out
from the seal on the impeller side. This small leak
is acceptable. Leaks from other areas must be re-
paired.
410 smr2009-039
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