|Topic Review (Newest First)|
|07-02-2011 08:09 PM|
Replacement Belts for Autohelm 4000
For those of you with the older Autohelm 4000 in need of replacement belts, I found the identical belt for far cheaper than what was charged for the, now discontinued, replacement belts.
The belt that is identical to the original is a metric belt of urethane composition. The part number is JAS T5/750-10 metric timing belt. You should be able to find these at any industrial belt supplier. They cost about 90% less than the belts that were marketed by Autohelm. If you have difficulties finding these, contact me and I will supply the contact information for a supplier in California.
|07-02-2011 12:15 PM|
Originally Posted by wdtracy View Post
Hope it works to get a few more years out of our Autohelm 4000!
|11-25-2010 10:50 AM|
|neophytecruiser||I've tracked down, what I believe to be the same drive belts Raymarine use in their ST4000 autopilots. They're metric belts and are made from urathane. Due to a bone-head act by myself (see: Sailing the Dream for the details), I've had to upgrade to the SPX-5 autopilot. As a consequence, I have three spare belts (I've already sold two) for the ST4000 Plus unit. If you're interested in purchasing one of these spares, contact me and I'll provide details. By the way, they're far less expensive than the mark-up made by Raymarine (at $52 a piece!).|
|12-06-2008 10:11 AM|
First check if the belt is slipping ,if it is you can adjust the belt on the rear of the unit ,there is a small round plastic cover symetric to the clutch lever,under the cover is the adjustment screw ,you need an adjustment tool with 2 pins to loose the nut and an allen wrench to adjust the center,then lock the nut to keep the adjustment.Do not tension the belt to much as it will not completely disengage. The belt tension have influence on retaining the clutch lever disengaged.
|09-15-2008 02:20 PM|
I have an ST 4000 that had gotten "grabby". Sporadically it wouldn't allow the wheel to turn, even though the clutch always remained fully disengaged. This is no fun when you are getting ready to make the turn into your slip. Turns out the steel inside the belts rusts, causing bubbles under the belt, which then grab at the housing.
One of my old spare belts was labeled Synchroflex AT5/750. Ebay was indeed my friend. Found an exact match from Polytech's Polybelt eBay store - as I see has been mentioned in previous posts. Their AT5-750 was a perfect fit. At $12.99 + S&H, a way better deal than the old Ray/Autohelm replacement kit, which was over $50.
Also, at one point years back one of the internal wheels broke off at its stand base. Drilling and throughbolting made it as good (better?) than new.
|07-22-2008 12:56 PM|
They are available on Ebay. Do a search in boat parts for Autohelm.
|07-22-2008 11:10 AM|
Originally Posted by beej67 View Post
|07-22-2008 09:41 AM|
Might not be as much of a hijack as you think, Dog.
Originally Posted by rwberman View Post
Also, if the handle won't stay engaged, but your existing unit still works fine as long as the handle is held in place, then just tie a piece of shock cord around the drive and use that to hold the handle down. I know of quite a few people who've done that with their ST4000s, as did I for a couple years before I bought new belts as per above. Yeah, it's kinda ghetto, but what works, works.
If you haven't ever replaced a belt before, it's pretty easy. The front and back halves of the unit snap together, so you can snap them apart (gently) with a long screwdriver. You'll need to remove some screws on a housing to get at the belt, but it's a piece of cake.
|07-21-2008 10:43 PM|
Really shouldn't hijack a thread... you'll get better results posting your own thread. Would also suggest you read the post in my signature.
|07-21-2008 10:27 PM|
Where can I get a used wheeldrive unit?
My Autohelm ST4000 drive unit seems to have failed. I can't get the belt tension adjusted well enough to hold the clutch in the engaged position. Anybody know someone who wants to sell a working unit without the electronics?
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