Spearhead Excel 606 Handbook page 38

Spearhead
Optional – Autopilot
Set-up: Correct position of micro switches
1. Place rear roller on the ground
2. Ensure the locking pins (fig.1) are installed into the Auto-pilot with the arm
fully lowered
3. Engine turned off, key removed and PTO disengaged.
4. Slacken bolt ("A" fig 2) and adjust cam plates until they are flush on the top.
5. Slacken screws ("B" fig 2) to adjust switches; the lever arm must rise on the
cam as shown sufficiently to make the circuit. The switch will give an audible
click, if necessary bend the lever arm towards the cam to ensure the switch
makes a circuit.
6. Remove the locking pin from the auto-pilot and raise the main arm and rear
roller off the ground 0.5 m, now check the opposite switch has risen up the
other cam and the switch has made a circuit.
7. Remove the fuse mounted in the control panel and start the machine, turn on
the rotor switch (the rotor should not spin) and turn on the autopilot. The arm
should rise if the arm head was fully lowered or drop if the rear roller is off the
ground, and the 2 switch arms should come to rest in the valley between each
cam peak.
8. The system can be checked for operation by depressing the red isolator
button on the top of the joystick handle, fully lowering the main arm, bring
joystick to neutral and releasing the red button. The autopilot should now
reset the arm up until the switches rest in the valley.
Summary
You must ensure that the micro switches make and break a circuit as the cams rotate
through their arc of travel. It is very important to correctly set the micro switches to
ensure the electrical circuit functions, the switch lever arm must follow it's own cam
and not be influenced by the opposite cam also the lever must be bent towards or
away from the cam to allow the electric circuit to open and close in accordance to the
cam position.
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Bolt "A"
Screw "B"
Fig 2
Excel 606, 686, 726 & 836