Hamilton Jet HJ241, Manual

Page: 92 / 202

8.6
8 MAINTENANCE
8.5 S
ERVICING
D
ETAILS
HJ-241 / HSRX
8.5 SERVICING DETAILS 8.5.1 Jet Unit Servicing Details
W
ARNING
Extreme care is required whenever
the Inspection Cover is removed as
water may enter the vessel
through this opening.
Never leave the Inspection Cover
removed without constant
monitoring of the water levels.
ITEM NO ITEM OPERATION
1 Intake Flow
Path Daily. Check for obstructions inside the Intake.
Remove the Inspection Cover and check around the Impeller and
Intake Screen for obstructions and debris. Remove any debris.
Refer to Section 2.9 Blockages (Debris in the Jet Unit).
2 Thrust Bearing. Every 30 Hours. (Or monthly if not run for 30 hours).
Grease with a good quality lithium based ball bearing grease every
30 hours running.Refer: Drawing
85018 Recommendations for Lubri-
cants and Oils
Normal operating temperature is 50 - 55 º C (120 - 130 º F) but the
Bearing can operate up to 120 ºC satisfactorily, noting that most of
the heat is generated by the Seals. A faulty Bearing will be indicated
by noise and vibration rather than temperature.
3 Marine Water
Bearing This is a water lubricated bearing and does not require attention.
Do not run the Water Jet out of the water as this will damage the
Bearing and Water Seal.
4 Water Seal Daily. Check for water leaks daily.
Visually check for water dripping from under the Bearing Housing.
If water is found, the Water Seal is defective and should be replaced.
The Water Seal should only be replaced if it is leaking, or there is
insufficient material left to last to the next complete Jet Unit inspection.
DO NOT OVER GREASE
Use only 20ml grease