Klein Marine Systems, Inc. HYDROCHART 3500, Operation And Maintenance Manual

Page: 51 / 86

Removing and Installing the Optional Compass
4-13
4.5 Removing and
Installing the
Optional Compass
Should it be required to replace
or to recalibrate the optional
compass, it can be accessed by
removing the forward and aft
fairings.
The following tools are
recommended:
• 3-mm hex key
• 4-mm hex key
• Phillips screw driver
4.5.1 Removing the
Compass
To remove the compass:
1. Perform Steps 1 through 5 in
“Disassembling the Sonar
Head Unit” on page 4-2 to
remove the forward and aft
fairings.
2.
Place the Sonar Head Unit
on its skid plate and locate
the compass as shown in
Figure 4-20.
3.
Disconnect the compass
cable from the jumper cable
inside the frame.
4.
Using the 4-mm hex key, remove the two socket head cap screws and lock
washers securing the compass to the frame and remove the compass with its
attached cable.
4.5.2 Installing the Compass
To install the compass, reverse the removal procedure above.
Figure 4-19:
Sound Velocity Sensor and
Adapter Sleeve Flush with Opening in Frame
Figure 4-20:
Compass Mounted to Frame
Compass
Socket head
cap screws