MK II Wheel Drive
19
Securing the sensor to the boat
Location
Mount the rudder position sensor on a suitable base alongside the rudder stock and tiller arm.
Note:
If necessary, you can install the sensor upside down. If you mount the sensor in this way, you
must swap the red and green cable connections at the course computer.
Securing the rudder position sensor
1. Hold the sensor in place, mark the mounting holes, then remove the sensor (if required,
use the template supplied).
2. Drill the pilot holes using a 3 mm (
1
/
8
in) drill bit.
3. Attach the sensor to the mounting base using the three self-tapping screws supplied
(pan-head No 8 x
3
/
4
inch).
Note:
To make
minor
adjustments to the sensor alignment, loosen the screws, rotate the sensor body,
then re-tighten the screws.
Attaching the sensor to the tiller arm
Attaching the tiller pin to the tiller arm
1. For optimum performance, mount the tiller pin on the tiller arm 140 mm (5.5 in) from the
rudder stock center line.
Note:
If necessary, you can fit the tiller pin anywhere between 101 mm (4 in) and 190 mm (7.5 in) from
the rudder stock. This will not affect autopilot performance, but will slightly alter the scaling of the rud-
der angle display shown on the control unit.
2. Hold the tiller pin in place (either along or across the tiller arm), mark the mounting holes
then remove the tiller pin.
3. Drill pilot holes using a 3 mm (
1
/
8
in) drill bit.
4. Attach the tiller pin to the tiller arm using the two self-tapping screws supplied (counter-
sunk No 8 x
3
/
4
inch) or suitable bolts, nuts and lock washers.
Attaching the connector rod
1. Use a hacksaw to cut the threaded connector rod to length.
2. Screw the lock nuts onto the road and then the ball-pin sockets.
3. Press the sockets onto the pins on the sensor arm and tiller pin.
Note:
To give the precise rudder position, the rudder sensor has a built-in spring to remove any free
play in the linkage to the tiller.
87063_1.book Page 19 Monday, December 19, 2005 3:22 PM
