Hamilton Jet HJ241, Manual

Page: 93 / 202

8.7
8 MAINTENANCE
8.5 S
ERVICING
D
ETAILS
HJ-241 / HSRX
5 Anodes Check the condition of the Anodes every 3 months. Refer to
Drawing
HJ-241-13-002 Anode Locations .
a) All External Anodes. Replace any Anode which is less than half its
original size. Refer to the various sub-sections in Section 9 Overhaul
for information on Anode replacement.
b) Tailpipe Internal Anodes. Also change the Tailpipe internal anodes.
c) Ensure all fasteners are correctly tightened when fitting new
Anodes. Refer to Section 9.7.7 Tailpipe Overhaul f or information
on Anode replacement.
6 Steering System Check integrity daily. A thorough check of the whole Steering
System is recommended every 30 hours of operation.
Check the whole Steering System for freedom and range of movement.
NOTE: The HJ-241 Steerable Nozzle System has been designed with minimum clearances between the
Nozzle and Nozzle Housing. This allows optimum steering thrust at any lock with the minimum
of loss. It is important to keep the Pivot Pins and Bushes in good condition to maintain
clearances. Heavy impacts on the Nozzle Housing may deform it and cause the steering to jam.
6
(Contd)
Steering System
(Contd) If a severe jam-up or impact has occurred, all parts of the Steering
System should be examined for damage. This should include the
following items on the Jet Unit.
1. Steering Shaft:- The Steering Shaft should be removed and
checked for straightness, particularly at the Crank end of the
Steering Shaft.
2. Tiller:- Check that the Tiller is not bent and that the Steering Shaft
to Tiller attachment bolts are secure.
3. Steering Crank and Crank Ball:- Check that the Crank is not bent
or worn. Replace if damaged. The Crank Ball should be checked for
excessive wear.
The maximum clearance between the Crank ball and
the Nozzle Bush is 1.2 mm (0.047ins).
4. Steering Crank Cotter:- Check that the tapered surface has no
indentations. Check for thread damage. Replace if deformed or
damaged. Check for security of attachment.
5. Steering Nozzle:- Check that the Steering Arm on the top of the
Nozzle is not bent. If any cracks are visible on the underside of the
Steering Arm, or in the web adjacent to the Pivot Boss,
the Nozzle
must not be used and should be replaced. If no faults are found, the
underside of the Steering Arm should be crack tested using a dye
penetrant technique to prove the integrity of the Steering Arm
before re-use.
Carry out a check of the “ Nozzle Vertical End Float
Adjustment”, refer to Item 12 below.
7 Steering Cable
(If Fitted).
Daily - Check the Cable attachment points, and the Cable outer mount
points. (This check is of particular importance as failures have occurred
with these items coming loose) .
Monthly - Check the Steering Cable for freedom of movement. If
necessary disconnect to check and grease the cable.
ITEM NO ITEM OPERATION