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Old 24-10-2014, 03:20   #1
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Raytheon type 1 troubleshoot

Hi there,

I have an old Raytheon type1 linear drive which I inherited with the boat. I have just wired up a new siimrad ac12 course computer and am experiencing an odd issue.

When setting up the pilot via the nmea display, the clutch on the drive engages (I can't move the wheel), but the drive doesn't move in either direction.

Clearly I'll have to take it off and have a look, but does anyone have any idea what the issue might be?

Cheers,

James
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Old 24-10-2014, 04:08   #2
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Re: Raytheon type 1 troubleshoot

Did the drive work earlier? Is the motor getting voltage? If I am understanding your situation correctly that is what I would check first.
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Old 24-10-2014, 04:26   #3
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Re: Raytheon type 1 troubleshoot

The drive was always an unknown... most of the electrics were shot when we got the boat...

The clutch definitely works though.

Will test the drive motor... I can hear it making an electric hum... but that may just be the clutch...

Will bring my multimeter down...

Cheers.
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Old 24-10-2014, 06:25   #4
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Re: Raytheon type 1 troubleshoot

The clutch doesn't hum. Did you go through the commissioning procedures with the AC12? One of the first things it does is go through a process where it figures out what type of drive you have and how to operate it. Without doing this, it may not be sending the correct polarity or voltage to the drive.

To test the drive, just disconnect it pull the arm out half way and touch the leads to a battery - it will move one way or the other if working. Don't let it drive past its stops.

Frankly, if the autopilot is important to you and your sailing, and you have a new computer, etc, I wouldn't be installing an unknown, at least 14yr old (Raymarine has owned Raytheon that long) drive unit that came with a boat with shot electronics.

Mark
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Old 24-10-2014, 08:26   #5
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Re: Raytheon type 1 troubleshoot

Fair point.

We've fixed the rest of the electrickery though... I was banking on the drive being a more simple beast... Thanks for the tip re: testing it sans brain...

The setup phase was where the drive made the humming noise... so could be an issue with old wiring to the drive I guess...

Thanks.
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Old 25-10-2014, 22:19   #6
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Re: Raytheon type 1 troubleshoot

Happy news...

Touched motor wires direct to battery... motor worked...

Re-connected to the pilot computer and re-did setup... drive works.

Thanks for the tips... I guess the motor just needed a bit of a wakeup!
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Old 29-10-2014, 05:21   #7
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Re: Raytheon type 1 troubleshoot

I bought an M81130 type 1 ram off ebay,couple yrs ago.It appeared to be un-used- no scratches or bolt marks.Motor wouldn't work,but clutch worked.Took motor cover off,found a stuck brush.Been working fine since.
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