Hamilton Jet HJ241, Manual

Page: 100 / 202

8.14
8 MAINTENANCE
8.5 S
ERVICING
D
ETAILS
HJ-241 / HSRX
4 Purging the HSRX
System Whenever maintenance activities have been carried out on
the HSRX Reverse System, air will be trapped within the
system, it is necessary to purge the system. It is important
that the following actions are carried out to prevent
running the HSRX Oil Pump dry:-
ON ENGINE START-UP:
With the engines set to idle and the vessel securely moored in
deep water.
1. Have someone monitoring the Reservoir and refill as
required.
2. Idle the Engine at the lowest possible RPM.
3. Run the Pump for 5 minutes approximately without
moving the Controls - this will purge air from the Oil
Cooler. Refill the Oil Reservoir.
4. Start the Engine, operate the controls to stroke each
cylinder at least 10 times. This should purge any
remaining air out of the system.
5. Top up the Pump Reservoir.
6. Check the System to ensure that it is not overheating. It
should be possible to hold your hand on any component
for at least 2-3 seconds.
5 HSRX Pump Drive
Belts Check the Belt tension monthly.
Refer to Drawing
CT-HPU-01001 Hydraulic Power Unit .
.
NOTE:
1. Belt adjustment should be carried out without the
Engines running.
2. If a new Belt has been fitted, the Belt Tension should be
checked and re-tensioned as required over a period of
24 to 48 hours "Running-In" period to allow for Belt
settling.
3. After the initial settling in period, the Belt should be
checked on a monthly basis and re-tensioned as
required.
5 (Cont.d) HSRX Pump Drive
Belts (Cont.d) T
O
C
HECK THE
V-B
ELT
T
ENSION
:
The Belt tension is correct when a 2.4 mm deflection is
achieved when a load of 580 to 870 gr (1.3 to 1.9 lbs) is
applied to the centre of the Belt.
ITEM NO ITEM OPERATION
C
AUTION
Over tensioned V-Belts will cause
reduced Pump and Jet Unit Bearing
life.