Hamilton Jet HJ241, Manual

Page: 115 / 202

9.11
9 OVERHAUL
9.4 S
TEERING
A
SSEMBLY
R
EMOVAL AND
O
VERHAUL
HJ-241 / HSRX
7. Pivot Sleeve [12]. Check for wear and damage.
Check the condition of the threads. Replace if
worn or damaged.
8. Steering Pivot Bolts [11]. Check the condition of
the threads and bolt. Replace if worn or
damaged.
9. JT Steering Lip Seals [24]. Check the condition
and security of the Lip Seals. Replace if damaged
or worn.
10. Nozzle Anode [20]. Check the condition.
Replace if more than ½ corroded.
9.4.4 Nozzle Assembly Overhaul
Drawing HJ-241-06-000 Steering Assembly General
Arrangment Sht1 refers .
REPLACING THE JT STEERING LIP SEALS [24]:
NOTE: The JT Steering Lip Seals can be replaced
without separating the Nozzle from the
Nozzle Housing.
To replace the JT Steering Lip Seal [24], carry out
the following actions:-
1. With the JT Steering Nozzle [15] and the Nozzle
Housing [9] removed complete from the Jet Unit
Tailpipe and with the Nozzle and Nozzle
Housing placed face down on a work bench,
unscrew and remove the 4 Screws [25] at the rear
of the Nozzle securing the 2 JT Steering Lip Seals
[24] to the rear face of the Nozzle.
2. Carefully remove the 2 JT Steering Lip Seals [24]
from the rear of the Nozzle Housing and discard.
3. Replace with 2 new JT Steering Lip Seals,
ensuring that the JT Steering Lip Seals [24] are
fitted with the overhang of the Seal facing
outwards when the Seal is fitted to the JT Steering
Nozzle [15].
(Will be facing towards the front of
the Jet Unit when completely assembled to the
Nozzle Housing [9]).
4. Refit the 2 new JT Steering Lip Seals [24] in
position at the rear of the Nozzle.
5. Thoroughly clean the threads of the Screws [25]
and apply Loctite 222.
6. Secure the JT Steering Lip Seals [24] in position
hand tight only using Screws [25] to allow some
movement of the Lip Seals for adjustment.
NOTE: There is some movement in the Lip Seals [24]
when loosely secured with Screws [25], this
is to allow the Lip Seals to be adjusted to fit
the inside of the Nozzle Housing [9].
7. Adjust the Lip Seal [24] to give a 0.4mm to 0.6mm
clearance to the spherical inner surface of the
Nozzle Housing [9].
8. Tightened the Screws [25] to the recommended
torque to secure the Lip Seals to the rear of the
Nozzle.
9. Refit the JT Steering Nozzle [15] complete with
the Nozzle Housing [9] to the Tailpipe as shown
in
Section and Section 9.5.2 Re-Assemble the Noz-
zle / Nozzle Housing to the Tailpipe.
STEERING CRANK BUSH [14] REPLACEMENT:
Refer to Drawing
HJ-241-06-000 Steering Assembly
General Arrangment Sht1.
To replace the Steering Crank Bush [14], carry out
the following:-
1. With the Nozzle [15] removed from the Tailpipe
and placed on a workbench, use a hacksaw blade
to carefully cut out the old Steering Crank
Bush[14].
Take care that the Steering Crank
bore is not scored or damaged during removal
of the Steering Crank Bush [14].
2. Carefully drift out the pieces of the old Steering
Crank Bush.
3. Ensure that the bore in the Nozzle Boss is
cleaned of old loctite and any corrosion.
NOTE: Do Not paint the bore of the Nozzle Boss.
4. Apply a thin coating of Loctite Activator 7471 to
the outside surface of the Steering Crank Bush
[14] and allow to dry.
Do not apply Activator to
the bore of the Steering Arm.
NOTE: Loctite Activator 7471 must be used to refit
the Steering Crank Bush otherwise the Loctite
680 will not cure and retain the Bush in
position.
5. Apply Loctite 680 to the bore of the Steering Arm
Boss.
NOTE: There are to be NO dry areas between the
Steering Crank Bush and the bore of the
Steering Arm Boss once the Steering Crank
Bush is fitted.
6. Insert the replacement Steering Crank Bush [14]
from the underside of the Nozzle and outwards,
ensuring that the shoulder of the Steering Crank
Bush is hard against the underside of the Steering