Mudden Posted July 29, 2021 Share Posted July 29, 2021 Hi. So I have a factory mounted Mayflower Automotive MK-III P.T.O. drum winch on my Land Rover 109 Series III 1977.I tried to use the winch a while back but it didn’t move, I checked the PTO under the lid in the center seat and noticed that the shear pin was replaced by a broken off thin steel nail. I put in a M6 bolt instead of a shear pin (steel grade 8.8) and tried to turn the winch.At first, the bolt snapped immediately, so I replaced it with a new bolt, this time i was very gently releasing the clutch, tried to go first gear, then reverse, then first, then reverse and soon the drum started to unroll the winch cable. I then went in to first gear again and the drum started to take up the winch.I went out of the car with the winch turning, checked the drive shaft and it was spinning nice without any strange sounds. I tried to disengage the winch clutch (big lever), then engaged the winch clutch, just to test the functions. It worked properly for a couple of seconds, the drum stopped and started as it should, no strange sounds or vibrations but suddenly the shear pin (M6 bolt) snapped once more.I replaced it, and went for another try, snapped again. And again, and again…The winch seems to be completely stuck, I can’t move the drive shaft nor the worm gear at all. Whats my options here? Disassemble? Go for a M6 12.9 steel grade quality to try to force it loose?When replacing the oil in the gear housing it first ran out like 2-3 dl of water… It’s now rinsed with diesel and filled with gear oil. Could the water have destroyed some bearing?Any thoughts?Short video showing the movement of the drumhttps://youtu.be/afEco3V4bh4 Quote Link to comment Share on other sites More sharing options...
JohnnoK Posted July 29, 2021 Share Posted July 29, 2021 Forcing it loose will break whatever is sticking at the moment. If a lot of water came out with the oil, I'd open it up and check the innards for corroded bearings before using it again. Fairey_PTO_Drum_Winch_user_manual-1.pdf 1 Quote Link to comment Share on other sites More sharing options...
steve b Posted July 29, 2021 Share Posted July 29, 2021 Another thing to note is the worm gear is phosphor bronze and does not like GL4 gear oil , EP90 only . As above remove and strip to check everything . Welcome to the forum too Steve Quote Link to comment Share on other sites More sharing options...
Gazzar Posted July 29, 2021 Share Posted July 29, 2021 As above. The sheer pin is to prevent expensive and probably NLA parts from breaking. Disassemble, replace bearings, re gasket, reassemble. Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted July 30, 2021 Share Posted July 30, 2021 Do you not have the over-ride clutch fitted? like two discs, with dimples inforced together by an adjustable spring and ball bearings in the dimples Quote Link to comment Share on other sites More sharing options...
steve b Posted July 30, 2021 Share Posted July 30, 2021 I think that system is LT230 type pto drop box only Steve Quote Link to comment Share on other sites More sharing options...
Nonimouse Posted August 18, 2021 Share Posted August 18, 2021 On 7/30/2021 at 12:28 PM, steve b said: I think that system is LT230 type pto drop box only Steve It's winch age dependant Quote Link to comment Share on other sites More sharing options...
western Posted August 18, 2021 Share Posted August 18, 2021 Saw this Superwinch LT230 PTO unit on Facebook marketplace last night https://www.facebook.com/marketplace/item/232612504961968/?ref=facebook_story_share Not my sale just posted for interest. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.