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post #1 of 5 Old 08-14-2008 Thread Starter
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Autohelm ... Help

Greetings,
I've got a Autohelm 4000 that works fine but.....
I can see a - what looks like a steel wire- protruding from the edge. Like I said the unit works fine but I know what is coming.
I assume this might be part of the belt? (like a steel belted tire when it comes appart)
I had notice lately it would be hard to free when not used for a day or so, I would turn on autopilot and engage clutch move several degrees disengage and all would be fine.
1. are there replacement belts for these and where?

2. would the MKII wheel drive work as replacement ?

And yes I've googled ....
I only found operation manual but nothing that would show parts or inside unit.
Thank you
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post #2 of 5 Old 08-14-2008
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According to my installation manual, the 4000 and Mk II wheel drives are different. It doesn't say to what extent, only that the Mk II can be used with the new S1 unit, but that the 4000 isn't compatible.

John
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post #3 of 5 Old 08-14-2008
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A recent thread posted a new source for decent belts for the ST4000 IIRC. You'll probably need to do a google search for it.

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post #4 of 5 Old 08-14-2008
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Quote:
Originally Posted by MiVelero View Post
And yes I've googled ....
I only found operation manual but nothing that would show parts or inside unit.
Thank you
Somewhere on the web I found a .pdf version of the ST4000+ Autopilot Service Manual. It has assembly/disassembly drawings for the wheel drive unit. I forget where I got it but if you PM me, I'll email it to you.

~Jim
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post #5 of 5 Old 12-06-2008
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Probably the wire protruding from your wheeldrive is a part of the belt wich indicates a broken belt,if it is a black autohelm 4000 for mounting on the wheel, the belt is a polyurethane
timing belt with steel core AT5-750 width 10mm

jean
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