Wykeham Martin top swivel service?

[MINESAPINT2]

Hi,

My Wykeham Martin 3B top swivel is not performing and I am looking for advice on how to service it. When I have it to hand it is very free but obviously the problem is when it is under load, the sail does not furl or unfurl freely always leaving a section wrapped around the luff wire.

Firstly I need to dismantle it. I removed a grub screw which allowed me to start unscrewing a 5mm section. I guess as I unscrew the jaw should also be released and as I continue to unscrew the unit will come apart and everything will fall into the bilges! Problem is the jaw seems to be stuck. Perhaps it just needs pulling out as the screw unscrews.

Look forward to replies

Thanks

Mike

 

[Plum]

Hi,

My Wykeham Martin 3B top swivel is not performing and I am looking for advice on how to service it. When I have it to hand it is very free but obviously the problem is when it is under load, the sail does not furl or unfurl freely always leaving a section wrapped around the luff wire.

Firstly I need to dismantle it. I removed a grub screw which allowed me to start unscrewing a 5mm section. I guess as I unscrew the jaw should also be released and as I continue to unscrew the unit will come apart and everything will fall into the bilges! Problem is the jaw seems to be stuck. Perhaps it just needs pulling out as the screw unscrews.

Look forward to replies

Thanks

Mike

It's a long time since I serviced mine but yes, as I recall, just unscrew the ring after removing the grubscrew and it just pulls appart and all the loose balls fall out........

Www.solocoastalsailing.co.uk

 

[MINESAPINT2]

Thanks however it looks like I am beat. I brought the swivel home thinking I had more equipment in mi shed. Removed the grub screw and unscrewed the ring/collar a couple of turns then gave the jaws a good tug, no luck. I do not have any proper engineering gear, hydraulic pullers etc but I do have a small Jockey winch that boasts a 1 tonne pull so I yoked it up. Took it to the limit but still no luck, left it under tension and sprayed WD40 into the grub screw hole, will see what it says in the morning. Any advice most appreciated.

Mike

 

[Plum]

Thanks however it looks like I am beat. I brought the swivel home thinking I had more equipment in mi shed. Removed the grub screw and unscrewed the ring/collar a couple of turns then gave the jaws a good tug, no luck. I do not have any proper engineering gear, hydraulic pullers etc but I do have a small Jockey winch that boasts a 1 tonne pull so I yoked it up. Took it to the limit but still no luck, left it under tension and sprayed WD40 into the grub screw hole, will see what it says in the morning. Any advice most appreciated.

Mike

see the instructions near the bottom of this page Using Wykeham-Martin furling gears.

www.solocoastalsailing.co.uk