Hamilton Jet HJ241, Manual

Page: 124 / 202

9.20
9 OVERHAUL
9.6 B
EARING
H
OUSING
A
SSEMBLY
O
VERHAUL
HJ-241 / HSRX
Housing and Water Seal is complete within
this time.
5. Wipe away all traces of the water and detergent
mixture from the Mainshaft and Water Seal. This
prevents corrosion of the Mainshaft if the Jet Unit
is put into storage. Do not allow grease or oil
near the Water Seal face.
6. Lubricate the Seal Face Holder [12] and the
Stationary Face Rubber Boot with a 20:1 water
and household detergent or liquid soap mix.
7. Fit a new Rubber Boot [1] and Ceramic Face [2]
(Refer to Figure 30: HJ-241 Jet Water Seal ) to the
rear of the Seal Face Holder [12] and ensure that
it is pushed fully home into the recess in the rear
of the Seal Face Holder.
8. Fit the Seal Face Holder over the Mainshaft and
push into place against the Intake Face.
9. The Bearing Housing can now be re-fitted.
9.6.3 Re-Assembly of the Bearing
Housing
Refer to Drawing HJ-241-01-000 Basic Jet Assem-
blies Standard and Dry Run Sht 1.
NOTE:
1. The Main Bearing Seals [6] are oriented as
shown to ensure that the grease pumped in
through the Grease Nipple (Item [18] of
Drawing
HJ-241-01-000 Basic Jet Assemblies
Standard and Dry Run Sht 1. ) passes through
the Bearing and excess grease can escape out
past the front Main Bearing Seal [6] of the
Bearing Housing where it can be seen.
2. If the Inner Seal [6] is fitted incorrectly, grease
may not get into the Bearing, and will escape
into the Water Seal cavity. Grease on the
Water Seal will attract grit and will form a
grinding paste which will destroy the Water
Seal.
10.Fit a new "O"-Ring [35] to the recess in the
Intake.
11.Lightly smear the outer surface of the inner Oil
Seal [6] with grease and press the inner Oil Seal
[6] into the Seal Face Holder [12].
Ensure that the
lip of the seal faces towards the Coupling Flange
when the Seal Face Holder is fitted in position. Refer
to
Figure 29: Bearing Housing & Waterseal Com-
ponents .
12.Apply marine grease to the ‘O’ Ring [37] fitted to
the Intake recess and around the Seal Face
Holder contact area with the Intake.
13.Lightly grease the inner Seal Sleeve [5] and fit
over the Mainshaft [1]. Push the Seal Sleeve
through the inner Oil Seal [6] until the Seal Sleeve
rests against the shoulder on the Mainshaft.
14.Lightly smear the outer surface of the outer Oil
Seal [6] with grease. Press the outer Oil Seal [6]
into the recess in the Bearing Housing [8] until
the Outer Oil Seal is firmly against the shoulder
in the Bearing Housing.
Ensure that the lip of the
seal faces the Coupling Flange when the Bearing
Housing is fitted in position. Refer to
Figure 29:
Bearing Housing & Waterseal Components .
15.Pre-pack the Main Bearing [7] with an approved
bearing grease, then press the Bearing into the
Bearing Housing [8].
16.Fit the Bearing Housing [8] complete with
Bearing [7] over front part of the Mainshaft and
locate into Studs [43] fitted to the forward face of
the Intake [19].
17.Fit Spring Washers [16] and Nuts [17] to Studs
[43] and secure the Bearing Housing to the
Intake. Torque load to the recommended torque.
18.Smear the Bearing Carrier [3] with grease and
carefully slide the Bearing Carrier onto the
Mainshaft and into the Bearing Housing through
the centre of the Bearing [7].
19.Using a soft hammer, gently tap the Bearing
Carrier [3] until it is level with the outside face of
the Bearing [7].
20.Apply grease to the outer face of the Outer Seal
Sleeve [5] and slide the Outer Seal Sleeve along
the Mainshaft towards the Bearing Housing.
21.Carefully push the Outer Seal Sleeve through the
Outer Oil Seal [6] fitted in the Bearing Housing,
until the Seal Sleeve rests firmly against the
Bearing [7].
22.Lightly grease the bore and keyway of the
Coupling Flange, the keyway of the Mainshaft
and the contact face of the Coupling Nut [10].
23.Fit the Coupling Key [11] to the Mainshaft and
tap into position with a soft hammer.
24.Fit the Coupling to the Mainshaft, ensuring that
the keyway in the Coupling aligns with the
Coupling Key [11] fitted to the Mainshaft.
25.Ensure that the Coupling Key [11] has not been
dislodged whilst fitting the Coupling to the
Mainshaft.