Hamilton Jet HJ241, Manual

Page: 113 / 202

9.9
9 OVERHAUL
9.4 S
TEERING
A
SSEMBLY
R
EMOVAL AND
O
VERHAUL
HJ-241 / HSRX
9.4 STEERING ASSEMBLY
REMOVAL AND OVERHAUL
Refer to Drawing HJ-241-06-000 Steering Assembly
General Arrangment Sht1 & 2 .
The Steering System may use either a Manual
Cable operating System or a Seastar Hydraulic
Cylinder to operate the Steering Tiller.
If the Jet Unit is fitted with a Seastar Steering
Cylinder, refer to the Seastar Maintenance Manual
for any maintenance required on the Cylinder.
If the Jet Unit uses a Manual Cable System, refer
to the relevant Controls Manual supplied with the
Jet Unit.
9.4.1 Steering Cylinder Removal
NOTE: If this Jet Unit is fitted with the "Seastar"
Steering Cylinder as a steering option, refer
to the "Seastar Manual" supplied with the
Steering Cylinder for Overhaul information.
Also refer to
CT-SJK-02-005 Steering Cylin-
der, Seastar.
The Steering Cylinder need only be dismantled if
it is suspected that a seal has failed and hydraulic
oil is found leaking along the Piston Rod
Assembly from either end of the cylinder. This
indicates that the Piston Rod Seals are defective
and must be replaced. Refer to the Seastar
Manual for information on seal replacement
.
1. Disconnect any Sensors attached to the Tiller
[16] or the Steering Shaft [1]. Refer to the
Overhaul Section of the Controls Manual .
2. Disconnect the Steering Cylinder hose
connections from the Seastar Steering Cylinder,
ensuring that all connections are fitted with
blanking plugs to prevent the ingress of moisture
and dirt and the leaking of hydraulic oil.
3. Disconnect the Steering Cylinder Rod End from
the Tiller [16] or Steering Shaft [1]. (If Tiller for
Tie Rods fitted).
4. Remove the Steering Cylinder from the vessel.
5. Check all components for signs of corrosion,
wear and damage. Replace as required. Refer to
the Seastar Manual for information on Steering
Cylinder Seal replacement
.
9.4.2 Steering Shaft Removal
Drawings HJ-241-06-000 Steering Assembly Gener-
al Arrangment Sht1 & 2 refer.
1. Remove the Splash Guard [7] and the Reverse
Duct as shown in Section 9.2.1 Reverse Duct Re-
moval of this Manual.
2. If fitted with Steering Cable Option. Also refer to
Drawing CT-SJK-02-005 Steering Cylinder, Seas-
tar . Disconnect the Steering Cable from the
Steering Shaft Extension / Tiller [16].
OR
3. If fitted with Steering Cylinder and Tie Rod Option .
Also refer to Drawing CT-HLM-06-002 Helm
Wheel Options . Disconnect the Steering Tie Rods
and Steering Cylinder from the Steering Shaft
Extension / Tiller [16].
4. Remove Nut [7], Spring Washer [8] and Special
Washer [6]. Remove the Cotter Pin [5] securing
the Steering Crank [4] to the Steering Shaft [1].
5. Push the Steering Shaft [1] forwards and slide the
Steering Crank off the end of the Steering Shaft.
6. Remove the Steering Crank [4] from the Steering
Crank Bush [14].
7. If the Steering Shaft Bushes [3] or "O" Ring [2]
require replacement, remove the Steering Shaft
completely from the Jet Unit.
Refer to Drawing
HJ-241-06-000 Steering Assembly General Ar-
rangment Sht1
for Steering Shaft Bush [3]
replacement.
8. Check the following components for wear and
damage:-
a)
Steering Shaft Bushes [3]. Check for wear or
damaged. Replace if worn.
b) Centre Steering Shaft Bush Sleeve [26]. The
Steering Shaft Bush Sleeve should not require
replacement.
c) Forward & Aft Steering Shaft Bush Sleeves
[27].
The Steering Shaft Bush Sleeves should
not require replacement.
d) "O" Ring [2]. (Fitted to the centre Steering
Shaft Bush. Check for deformation, cuts, wear
or damaged. Replace if worn or damaged.
e) Cotter Pin [5]. Check that the tapered surface
has no indentations. Check for thread
damage. Replace if deformed or damaged.
f) Steering Shaft [1]. The Steering Shaft should
be checked for straightness, particularly at the
Crank end of the shaft. If the surface is pitted
or damaged replace the Steering Shaft.
g) Steering Crank [4]. Check that the Crank is
not bent or worn. Replace if damaged. The