Bluesbreaker
Active Member
Having removed all bolts from the coupling relatively quickly,am now having a devils job removing a pin that holds both the coupling/prop shaft together.Any Sensible advice greatly appreciated.Thinking about trying Heat?
Prop Shaft Removal
- Thread starter Bluesbreaker
- Start date
scottie
Well-Known Member
Is it tapered they usually are
rob2
Well-Known Member
Can't really be sure of giving helpful advice without a picture of the problem. Different brands of coupling use different methods of location - they may have a straight pin, a spirol; pin or a tapered pin. I'd suggest you visit Vyv Cox's site to have a look at various types - identifying the type might be sufficient to get help. Bear in mind though that in some installations the mechanic may have mad a modification to the standard!
http://coxengineering.sharepoint.com
Rob.
http://coxengineering.sharepoint.com
Rob.
Last edited:
john_morris_uk
Well-Known Member
A pin-punch is a good aid!
Having said that, that last one I removed I had to drill out as it was so stuck in place with corrosion etc.
Cobalt drills are helpful.
Having said that, that last one I removed I had to drill out as it was so stuck in place with corrosion etc.
Cobalt drills are helpful.
MoodySabre
Well-Known Member
If the hole is straight-sided then use a drift punch the same size to make sure sure you don't distort the pin you are trying to remove.
Bluesbreaker
Active Member
I wasn't aware of that ,however it is hard to judge,on one side of the coupling the pin is flush,whilst on the opposite side the pin is inside the coupling,ie the pin is shorter in the length than the thickness of the coupling/shaft, hope that makes sense.thanks for your suggestion,will check it out.
mtb
Well-Known Member
sounds like a taper pin, warm up the coupling use a decent quality drift with an end that is the right diameter it would be an idea to support the shaft on the underside to counter act bounce and or damage to the stern tube
but I bet it will be very difficult to remove
Bluesbreaker
Active Member
Thanks guys, have just looked at vyv cox's site and from the pictures shown there it looks similar to a Yanmar.
theoldsalt
Well-Known Member
I'm a little reluctant to say this but when I tried to remove the coupling from the shaft it would not budge even after the pin was removed. We ended up cutting the coupling off with an angle grinder and replacing it with a split coupling so that it will be easier to remove next time.
Maybe worth saving time on the pin and split the coupling with an angle grinder.
Good luck anyway.
Maybe worth saving time on the pin and split the coupling with an angle grinder.
Good luck anyway.
30boat
N/A
That's what I would do.There's no need for pins in couplings.My Aquadrive has a split coupling tightened by a single 10mm bolt on a 25mm shaft.For bigger engines the couplings have more bolts but no pins.
