SL 30/35 Hull Sonar Operators Manual
974-25007001/2.0
Troubleshooting and Maintenance
Page 7.5
Kongsberg Simrad Mesotech Ltd.
Port Coquitlam, BC - Canada
7.4.3 Lower and Raise unit (SL 35 Only)
For the SL 35 only, once a month, check the lower and raise ram unit for oil leakage;
if a small amount of oil is present, clean and monitor on a regular basis. Check the
oil level and top up using Standard Automatic Transmission oil. Do not over-fill the
reservoir; re-install the vent cap.
7.4.4 Tank Flange shaft Bearing, Seals and Sonar Dome (SL 35 Only)
When the ship is dry-docked, remove the sonar dome assembly, clean and remove
marine growth from the dome with a fine scraper or a piece of wood.
•
Check the tank guide assembly; replace if damaged or worn-out
•
Remove the tank flange and disassemble the main shaft bearing and seals and
re-build using a special kit that contains all seals, shaft scraper and a new zinc
anode
•
Using the oil level gauge supplied in the installation kit, remove one of the oil
plugs located on the top of the sonar dome and insert the gage and insure that
the oil level is ok. If not, top up to the proper mark on the oil gage using Shell
Tellus 15.
Note:
Do not over fill the sonar dome, space must be allowed for expansion and
contraction
due to water temperature changes.
See Part 8
“Attachment and Drawings”
for detailed procedure.
7.4.5 SL 35 Shaft and SL30/35 Sonar Dome Damage
The sonar dome and shaft should be inspected for damage. If the sonar dome has
experienced an impact, this could bend the shaft and eventually allow water into the
soundome unit.
7.4.6
Corrosion
If, on examination, corrosion has occurred to the sonar dome, replace the damaged
parts. If corrosion has occurred on the flange assembly, clean the area and seal with
paint to prevent continuation of the corrosion in this area.
Summary of Contents for SL 30
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