Hamilton Jet HJ241, Manual

Page: 64 / 202

5.4
5 INSTALLATION
5.4 M
OUNTING THE
J
ET
U
NIT
HJ-241 / HSRX
5.3.3 Removal of Other Parts
The Jet Unit is shipped with the Controls System
fitted. Should it be necessary to remove the Controls
System, refer to the Controls Manual supplied, for
details on the fitting and removal procedures.
5.4 MOUNTING THE JET UNIT
Refer to the appropriate Hull Installation
Drawings at the rear of this section.
G.R.P Hulls; HJ-241-08-001 Installation Details
GRP Hull.
Aluminium Hulls; HJ-241-08-002 Installation De-
tails Aluminium Hull.
Steel Hulls; HJ-241-08-003 Installation Details Steel
Hull Sht1 & 2
PREPARATION:— After mounting the Intake Block
and making the Transom hole in the hull:-
1. Ensure that the Reverse Duct and Transom Plate
have been removed from the Jet Unit as shown in
Section 9.2.1 Reverse Duct Removal and Section
9.8 Transom Plate Assembly Overhaul . The
Reverse Duct needs to be removed because the
Jet Unit is installed from inside the hull, and the
Reverse Duct cannot fit through the Transom
hole.
2. To fit the Jet Unit complete with the Intake Screen
attached, using approved lifting equipment, lift
the Jet Unit with the Intake Screen attached, into
the hull and position the Jet Unit so that the rear
of the Jet Unit passes out through the Transom
opening and the Intake Screen fits centrally in the
Intake Block hole. Should the Intake Screen
require removal during installation, refer to
Section 9.10.4 Screen Removal .
3. Check that the Jet Unit is correctly located in
relation to the Transom hole and that the Intake
Block fits neatly with the Intake casting. Correct
the hull preparation as necessary.
4. Check that the contours between the hull and the
Jet Unit Intake, at the front and rear are smooth
to within 1mm (
1
/
32
”). There should be no steps.
IF SATISFACTORY, PROCEED AS FOLLOWS.—
C
AUTION
In Multi Jet Unit installations,
each Jet Unit may have been
configured for Port, Starboard or
Centre mounting. Care should be
taken to ensure that each Jet is
fitted in its correct position.