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Ho to Remove motor-gearbox of Port sheet winch
eric freedman <kimberlite@...>
Danny, I had a different problem with my winch. However I had to remove it to repair it. If you reach to the top of the gearbox you will feel a number of socket head screws at the top of the gearbox assembly.. You cannot see them. If you loosen these the whole assembly will drop down.
In my case the screws sheared off and caused the whole assembly to bang back and forth until the motor came apart. I made new screws to hold the motor together and replaced the socket head screws with grade 10 (black) screws and installed them with locktite.
The real problem is to put the motor back. You have to align the assembly and then put in a few screws to get the mounting process started. You will be doing this blind with the heavy assembly over your head. I found that impossible.
I finally cut the heads off of a couple of slightly longer bolts and ground the cut off end to be slightly rounded. This allowed me to install the motor and while holding it up have someone else start a couple of socket head screws. Works like a charm. There is also a thin plastic washer (isolation shim) at the top of the gearbox assembly that should be replaced.
I would suggest anyone reading this to have someone operate the winch for a second or two. If the gearbox-motor assembly moves. It’s time to change the bolts and make sure they are very tight. I found my other winch to also be loose.
Fair Winds Eric Amel Super Maramu #376
From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Danny and Yvonne SIMMS
Sent: Monday, November 30, 2020 2:59 PM To: main@AmelYachtOwners.groups.io Subject: Re: [AmelYachtOwners] Port sheet winch
Thanks Adam, I am expecting to be able to refurbish/repair my winch but I will keep your advice re replacement in reserve. Danny SM 299 Ocean Pearl
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Re: Port sheet winch
Thanks, Mark! Timing is perfect. Winch maintenance is on my winter to-do list.
-- Dave Kurtz SM2 #380 S/V Celtic Cross Detroit, Michigan |
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Re: ONAN replacement or not?
Karen Smith
This year we decided to bite the bullet and replace our Onan. Not because of intrinsic reliability issues, but because of a lack of spare parts availability from Onan. We had several major routine maintenance issues coming up, and it was clear that parts just were not going to be available.
We looked at deck mounted, "walk-on" solar panels, but at a cost of about $10 a watt (!) the cost was very unattractive for a solution that still wasn't sufficient to meet all our needs. You can find a detailed description of our logic and design process here: https://fetchinketch.net/boat-projects/power-to-the-people/ The short form answer: We analyzed how we use our boat, and our electrical needs, and came up with what has seems to be a very good solution for us. A DC generator from Whisper-Power. It is smaller, lighter, and much more efficient than the Onan (Light enough that the permanent list to port is GONE!). It is the last piece of a long, steady modernization of our boat's electrical system. With the addition of this generator, and a Victron Cerbo GX monitoring system, we finally see our systems set for comfortable, simple, extended off dock cruising for the foreseeable future. Maybe the next time we need batteries (in 8 to 10 years), we will jump to a Li system, but for now we are staying with our Firefly Batteries that seem to give us 90% of the benefit for 50% of the cost. Bill Kinney SM160, Harmonie Fort Lauderdale, FL, USA. |
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Re: ONAN replacement or not?
You can also consider buying a smaller genset. We have the 11kVA Onan and my biggest problem running it is creating enough load for the beast to keep it happy. If your interest is just to charge the battteries and run the watermaker a 4kVA should be sufficient. That saves money as well.
Overhauling the alternator alone does not make much sense. The engine @ 8000 hrs is likely to become a cost liability as well, even if the expected lifespan is 12k hrs. Don’t forget the age of the system also causes risks, not just the running hours. Things like exahaust elbow, heat exchanger, seal-rings, etc. age not just by running hours. My guess is that a full overhaul is not economical viable unless you have access to cheap parts and labour. Regards, Arno Luijten SV Luna |
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Re: engine exhaust high temp alarm Sea Chest Clog Alarm
I have a vetas one installed. You can use the sensor from a car thermo fan switch. I have it located at the water injection point in the exhaust system.
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It will activate before the engine alarm.
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Re: engine exhaust high temp alarm Sea Chest Clog Alarm
Miles
Hi Eric,
I am sold on this and I am getting one. Where did you take the power from? Is yours 12V or 24 V (I guess that these questions have one answer). Did you need a longer wire?
As always, thanks.
Regards,
Miles
s/y Ladybug, sm 216, in Le Marin, Martinique |
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Re: ONAN replacement or not?
And maybe without the genset the mast would be vertical! ; ) Which brings up the question of the weight of a full bank of lithium batteries? Mike ALETES SM#240 Rock Hall, MD
From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Germain Jean-Pierre
Sent: Monday, November 30, 2020 3:34 PM To: main@amelyachtowners.groups.io Subject: Re: [AmelYachtOwners] ONAN replacement or not?
FWIW, I would proceed exactly as suggested on Aquarius
A top tier lithium setup should not cost you as much as a new genset
Good luck
Jean-Pierre Germain, Eleuthera, SM007, NZ
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Re: ONAN replacement or not?
Germain Jean-Pierre
FWIW, I would proceed exactly as suggested on Aquarius
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A top tier lithium setup should not cost you as much as a new genset Good luck Jean-Pierre Germain, Eleuthera, SM007, NZ On 1/12/2020, at 9:00 AM, Ken Powers SV Aquarius <ken@...> wrote:
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Re: ONAN replacement or not?
Ken Powers SV Aquarius <ken@...>
You asked for opinions.....
With new solar, and lithium batteries the future of gensets has almost come to an end. You can put 2KW of solar on deck with 900AH of LiFePO4 batteries (at 24V). This would life better than getting a new GenSet. Keep the genset though, you might use it about 50 hours per year, max, with the set up above. And you might even get another 10 years of life out of that Onan. Onan's are very good gensets! Ken Aquarius SM2K#262 |
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Re: Port sheet winch
Danny and Yvonne SIMMS
Thanks Adam, I am expecting to be able to refurbish/repair my winch but I will keep your advice re replacement in reserve. Danny SM 299 Ocean Pearl On 01 December 2020 at 08:14 Adam Body <adamgcbody@...> wrote: |
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Re: Port sheet winch
Adam Body
I have just replaced the same motor and gear box. I sourced the replacement from Mauripro, at a good price and with excellent service. The unit is heavy so be careful pulling it off.
-- Adam Body "Flora" SM128 Annee 1994 |
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Re: Port sheet winch
Danny and Yvonne SIMMS
Thanks for your input Nick. Mark has now posted the Lewmar manual which answers all my questions Danny SM 299 Ocean Pearl On 30 November 2020 at 22:36 "ngtnewington Newington via groups.io" <ngtnewington@...> wrote:
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Re: Port sheet winch
Danny and Yvonne SIMMS
Thank you Mark, invaluable. Danny SM 299 Ocean Pearl On 01 December 2020 at 03:32 Mark & Debbie Mueller <brass.ring@...> wrote: |
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ONAN replacement or not?
Dear Amelians,
my MDKAW is on ca 8000 hrs and I'm thinking about a replacement before sailing to the Pacific. The new 9 kW model (Marine QD space safer) MDKDL was offered to me for USD 12'195 - no discount. So here are my 2 questions: 1. Does anyone know a source that sells ONAN at a discounted price? If necessary please use private e-mail (alexramseyer@...) 2. I understand that the diesel part of the generator should be good to be used up to 12000 hrs if maintained well. The electricity generating part however seems to be pretty much end of life at around 8000hrs. Does anyone have experience with renewing the electrical part? Does it makes sense to do that considering part and labor cost, assuming the revised gen-set will run at least another 4000h? Thanks for sharing your experience, Alex s/v NO STRESS currently in Carriacou |
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Re: Port sheet winch
Mark & Debbie Mueller
Attached is the Parts and Installation Manual for the Lewmar electric winches on our Amel. Hope it will cover your winch also.
-- Mark Mueller Brass Ring A54 |
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Re: Port sheet winch
Sorry did not mean to send that.
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Bottom line is that I am sure you have found the problem. Carbon dust with oil leak to make it extra messy. Nick
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Re: Port sheet winch
Danny if I remember correctly the motor and gear box are fitted to the vertical shaft that goes up to the winch with a keyway on the shaft and the gear box is bolted up to the deck/winch. I do not know if the bolts holding the gearbox up are threaded into a plate or if you need to remove the winch to access the nuts. On the windlass it was quite easy to lift off the capstan and access the
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Re: Port sheet winch
Danny and Yvonne SIMMS
Thanks again Nick. You have answered my question about the gearbox being oil filled. Did you replace the seals. When you say you dropped the motor off were you able do remove the motor alone,or the motor and gearbox together leaving the winch in place. Or did you start drom the top and remove the winch first? Thanks again Danny SM 299 Ocean Pearl On 30 November 2020 at 21:32 "ngtnewington Newington via groups.io" <ngtnewington@...> wrote:
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Re: Port sheet winch
Danny and Yvonne SIMMS
Thanks Nick. I took the cover off the brush mechanism. It is an oily mess in there with a gunge of catbon dust mixed in I dont know yet if the gearbox has oil in it. If so I suspect the seal between the motor and the gearbox has failed and allowed oil to penetrate the motor. Brushes dont respond well to being covered in oil,it leads to short circuits. So far I am working with the motor in place. I have yet to learn if it can be removed from the winch without dismatling the whole mecanism. I live in hope. Thanks for your input. Danny SM 299 Ocean Pearl
On 30 November 2020 at 21:29 "ngtnewington Newington via groups.io" <ngtnewington@...> wrote:
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Re: Port sheet winch
Danny,
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If you drop the motor and gear box be careful to keep it level as oil from the gear box can leak into the motor and then out and make a mess....been there!! Nick S/Y Amelia 54-019 On 30 Nov 2020, at 08:29, ngtnewington Newington via groups.io <ngtnewington@...> wrote:
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