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Join Date: Jun 2007
Location: Chesapeake Bay, South River
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Rep Power: 8
autohelm 4000 parts
I have a problem with my autohelm 4000 wheel drive unit. The plastic (perhaps nylon - don't know) 'pinion sprocket' that transfers the power from the eletrcial motor to the belt drive has broken. I have been seaching the internet for available parts and haven't had too much luck. As I read on other posts, the autohelm 4000 isn't supported anymore. I have some leads on used parts (one in california and one in cape town) but they don't sound promising.
So here are my 2 questions.
1. Any ideas on where I can look for spare parts for this unit or asked another way, where can i find a substitue 'pinion sprocket'.
2. I don't have much to lose so I am considering trying to put the sprocket back together with and adhesive or epoxy of some kind. Any suggestions on what to use?
Drive Unit external view
Pinion Sprocket in question (asembled but not glued)
The schematic of the part, circled in red:
As always, thanks in advance.
1986 Pearson 28-2