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Harken winches - do they have nuts?

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seanthijsse View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote seanthijsse Quote  Post ReplyReply Direct Link To This Post Topic: Harken winches - do they have nuts?
    Posted: 16 February 2023 at 16:48
Hi all, 

Another newbie question... I am currently servicing my winches on my 301. The two primary winches are Harken Classic 32.2ST two speed and the two coachroof winches are Harken Classic 8 plain-tops one speed. All four are the 2004 to present versions. 

I have taken them completely off the deck as they desperately needed a deep clean and service. 

Question: Does anyone know if the flathead machine screws require nuts and washers? The holes going through the deck are tapped so I suspect they are not needed.

I have looked at the service and installation manual for both and there is no mention there. I have looked behind the lining on the starboard coachroof winch (Harken classic 8) and there is no sign of any nuts or washers. That doesn't necessarily mean that they are not meant to be there!

Looking forward to the new season that is fast approaching!

All the best, 

Sean

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Wayne's World View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wayne's World Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 17:16
Sean,

I think you will find the mounting bolts screw into aluminium plates in the fibreglass layup. There are no nuts. I always leave our winches in place when servicing them. 
Wayne W
Cruising, currently in the Caribbean and will head across the Pacific early 2024
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seanthijsse View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote seanthijsse Quote  Post ReplyReply Direct Link To This Post Posted: 16 February 2023 at 17:21
Thanks Wayne. The coach roof ones go straight through and stick out in the gap between the roof and the lining so no aluminium plates there. I am unsure of the primary winches as I haven’t removed the lining to check. Unfortunately with the Harken Classic 32.2ST you need to remove them entirely to get to the inner mechanism (held together by an allen screw at the bottom of the winch). Not the best design!


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seanthijsse View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote seanthijsse Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2023 at 10:28
Response received from Harken:

"The screws that secure the base to the deck do need nuts and washers, unless there is a plate underneath that some OEM puts in place. This is not done by Harken and so we can’t advise a solution to that. The official Harken way of securing the winch is to bolt or screw down with washers and nuts"

Pretty clear response. 

Best, 

Sean 

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Martin&Rene View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Martin&Rene Quote  Post ReplyReply Direct Link To This Post Posted: 17 February 2023 at 15:37
On my 341, which will be just slightly younger than your yacht.  there are integral aluminium plates built into the deck where the winches, clutches and deck organisers and other items are.  So, I would be surprised if yours is not the same. 

This old post refers to aluminium deck plates on a similar yacht to yours.

https://www.myhanse.com/friction-in-running-rigging_topic1411_post13533.html?KW=deck+aluminium#13533

Do not forget to put something like TufGel on the machine screws before you put them back.



 
Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout, normally based in Scotland
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seanthijsse View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote seanthijsse Quote  Post ReplyReply Direct Link To This Post Posted: 18 February 2023 at 07:42
Would the aluminium plates be visible at all from below or not and would the machine screws go straight through them and stick out the other end? Is there a way of knowing for sure that there is an aluminium plate?
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Kox View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Kox Quote  Post ReplyReply Direct Link To This Post Posted: 18 February 2023 at 11:02
On my 315 the plates are not visible from below. 
But I threaded a new M8 (if I recall correct) for some extra clutches on the coach roof, so I know for sure they're there:-) I would be surprised if the design on your 301 is not similar.


Edited by Kox - 18 February 2023 at 11:02
Hanse 315, Ella, Hull# 640
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pb1006 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote pb1006 Quote  Post ReplyReply Direct Link To This Post Posted: 18 February 2023 at 11:54
Does anyone tried a metal detector to check where are renforcement plates?
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Arcadia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 18 February 2023 at 15:05
The plates are often buried in the laminate and so they may not be visible from below. When Hanse drills and taps the holes, the mounting bolts always stick through the plate and show underneath. This insures full threading of the bolts. I can’t imagine that your winches which have carried considerable load were mounted without them !!
Leon / ARCADIA
2018 Hanse 588
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Arcadia View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Arcadia Quote  Post ReplyReply Direct Link To This Post Posted: 18 February 2023 at 15:14
Also, I agree 100 percent with Martin. You absolutely must use an anti-sieze compound on the threads when you install.  Aluminum and stainless will weld together if left alone in the marine environment. Sadly, Hanse did not always use one and I’ve had a few frozen bolts on my boat that needed drilling.
Leon / ARCADIA
2018 Hanse 588
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