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Section 12
PROPULSION SYSTEM
Subsection 02
(JET PUMP)
12-02-36
SMR2002-088_12_02A.FM
PUMP PRESSURIZATION
Whenever doing any type of repair on jet pump, a
pressure test should be done to check for leakage.
Proceed as follows:
– Remove impeller cover
no. 13.
Install pressure
cap (P/N 529 035 843) on pump housing.
– Connect pump gauge tester (P/N 529 021 800)
to fitting.
– Pressurize pump to a maximum of 70 kPa (10 PSI).
– Pump must maintain this pressure for at least 5
minutes.
CAUTION:
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 wa-
ter around cover. If there are no bubbles, impeller
shaft, impeller shaft seal, or jet pump housing is
leaking through porosity and has to be replaced.
Jet pump unit has to be disassembled. There may
be 2 or 3 bubbles coming out from sleeve
no. 30
/
seal area. This small leak is acceptable. Leaks from
other areas must be repaired.
– Disconnect pump gauge tester and remove pres-
sure cap.
– Reinstall impeller cover
no. 13
with 3 new self-
locking screws.
INSTALLATION
Jet Pump Housing
Make sure that black rubber covered reducer
no. 44
is installed as shown.
CAUTION:
Misinstallation can cause overheating
and damage to exhaust system.
1. Black rubber covered reducer
Generously apply synthetic grease on drive shaft
splines.
Make sure rubber damper is on drive shaft PTO
end.
Install jet pump. If necessary, wiggle jet pump to
engage drive shaft splines in impeller.
CAUTION:
Some watercraft require a shim be-
tween hull and pump; if shim has been re-
moved at pump removal, be sure to reinstall it,
otherwise engine alignment will be altered.
Apply Loctite 243 (blue) on stud threads of jet
pump housing.
Install flat washers
no. 40
, lock washers
no. 41
and nuts
no. 25
. Tighten nuts of jet pump housing
in a criss-cross sequence and torque to 31 N•m
(23 lbf•ft).
NOTE:
Slightly lubricate wear ring with BOMBARDIER
LUBE lubricant to minimize friction during initial
start.
529 035 843
F18J19A
1
F18J0IA
www.SeaDooManuals.net
Содержание GTX 4-TEC 5573 2002
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