Re: Stus-List removing prop shaft coupling - how?
Excellent! And good catch! From: Nate Flesness Sent: Sunday, May 18, 2014 12:31 PM To: Peter Fell ; cnc-list@cnc-list.com Subject: Re: Stus-List removing prop shaft coupling - how? Thanks to all - a small wheel puller plate with the right bolts let us get the coupler off the shaft, much like several helpful suggesions. REALLY GLAD I did this, pulled off the 34 yr old aging stiff packing gland hose and found it just barely covered a small hole in the boat - unusually poor fiberglass work around the stern tube plus (I'd guess) the edge of an old clamp chipped through a small spot at the forward end of the stern tube - hard to see, but a hole in the boat. Epoxy and glass work fixed it. Reassembly delayed to let it cure, but whew Nate Sarah Jean 1980 30-1 Siskiwit Bay, Lake Superior with very little ice left floating around... On Fri, May 16, 2014 at 6:36 PM, Peter Fell via CnC-List cnc-list@cnc-list.com wrote: I’m getting set up to do the same thing and from my investigations and discussions with local marine mechanics, I’ve determined: 1) The coupling would be a tolerance fit. 2) Cutting the old coupling off is the quickest method and you should do that at the keyway to minimize the potential for scoring the shaft itself. Otherwise a plate made-up with the same bolt pattern as the coupling and a rachet socket placed between the plate and the coupling + bolts through the plate and coupling can be used to press the coupling off. 3) Regardless of how you take it off, replace the coupling and take the shaft and new coupling it to a machinist to have a fit-and-face done on it and the shaft checked for straightness. 4) Might as well plan on doing the cutlass bearing at the same time. An old coupling would not have a tight fit on the shaft and the shaft torque would be taken up only by the shaft key shear that and the shaft backs out of the stuffing box and then you’d get to test out how good your bilge pump is. Peter Fell Sidney, BC CC 27 MkIII From: Dennis C. via CnC-List Sent: Friday, May 16, 2014 2:01 PM To: Graham Collins ; cnc-list@cnc-list.com Subject: Re: Stus-List removing prop shaft coupling - how? If all else fails, cut it in half and buy a new one. :) Dennis C. Touché 35-1 #83 Mandeville, LA Sent from my iPhone On May 16, 2014, at 3:36 PM, Graham Collins via CnC-List cnc-list@cnc-list.com wrote: I used a 3 arm puller, PB blaster, a blowtorch, and the largest wrench I could fit on the puller, with a pipe on that as an extension. I had a 12 adjustable wrench wedged in to keep the shaft from turning (the puller would have turned with it). The adjustable wrench now has a very impressive bend to it, and it took a fair bit of heat and force to get off. Hopefully yours isn't that difficult. And as Mainsail says in his blog, easiest way is to cut it off... if time is money, go that route. Graham Collins Secret Plans CC 35-III #11On 2014-05-16 11:52 AM, Nate Flesness via CnC-List wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
Thanks to all - a small wheel puller plate with the right bolts let us get the coupler off the shaft, much like several helpful suggesions. REALLY GLAD I did this, pulled off the 34 yr old aging stiff packing gland hose and found it just barely covered a small hole in the boat - unusually poor fiberglass work around the stern tube plus (I'd guess) the edge of an old clamp chipped through a small spot at the forward end of the stern tube - hard to see, but a hole in the boat. Epoxy and glass work fixed it. Reassembly delayed to let it cure, but whew Nate Sarah Jean 1980 30-1 Siskiwit Bay, Lake Superior with very little ice left floating around... On Fri, May 16, 2014 at 6:36 PM, Peter Fell via CnC-List cnc-list@cnc-list.com wrote: I’m getting set up to do the same thing and from my investigations and discussions with local marine mechanics, I’ve determined: 1) The coupling would be a tolerance fit. 2) Cutting the old coupling off is the quickest method and you should do that at the keyway to minimize the potential for scoring the shaft itself. Otherwise a plate made-up with the same bolt pattern as the coupling and a rachet socket placed between the plate and the coupling + bolts through the plate and coupling can be used to press the coupling off. 3) Regardless of how you take it off, replace the coupling and take the shaft and new coupling it to a machinist to have a fit-and-face done on it and the shaft checked for straightness. 4) Might as well plan on doing the cutlass bearing at the same time. An old coupling would not have a tight fit on the shaft and the shaft torque would be taken up only by the shaft key shear that and the shaft backs out of the stuffing box and then you’d get to test out how good your bilge pump is. Peter Fell Sidney, BC CC 27 MkIII *From:* Dennis C. via CnC-List cnc-list@cnc-list.com *Sent:* Friday, May 16, 2014 2:01 PM *To:* Graham Collins cnclistforw...@hotmail.com ; cnc-list@cnc-list.com *Subject:* Re: Stus-List removing prop shaft coupling - how? If all else fails, cut it in half and buy a new one. :) Dennis C. Touché 35-1 #83 Mandeville, LA Sent from my iPhone On May 16, 2014, at 3:36 PM, Graham Collins via CnC-List cnc-list@cnc-list.com wrote: I used a 3 arm puller, PB blaster, a blowtorch, and the largest wrench I could fit on the puller, with a pipe on that as an extension. I had a 12 adjustable wrench wedged in to keep the shaft from turning (the puller would have turned with it). The adjustable wrench now has a very impressive bend to it, and it took a fair bit of heat and force to get off. Hopefully yours isn't that difficult. And as Mainsail says in his blog, easiest way is to cut it off... if time is money, go that route. Graham Collins Secret Plans CC 35-III #11 On 2014-05-16 11:52 AM, Nate Flesness via CnC-List wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address:CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at:http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Stus-List removing prop shaft coupling - how?
I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
Some people have had success by positioning a nut that is smaller than the prop shaft, in between the coupling and then using the coupling bolts to force the prop shaft out. A suitable piece of sheet metal on the transmission side will ensure that the right shaft gets dislodged. Steve Thomas CC27 MKIII Date: Fri, 16 May 2014 09:52:13 -0500 To: cnc-list@cnc-list.com Subject: Stus-List removing prop shaft coupling - how? From: cnc-list@cnc-list.com I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? NateSarah Jean1980 30-1Siskiwit Bay MarineLake Superior(with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
Then to save the trouble next time, get a split coupling for the shaft. On May 16, 2014 11:10 AM, via CnC-List cnc-list@cnc-list.com wrote: Some people have had success by positioning a nut that is smaller than the prop shaft, in between the coupling and then using the coupling bolts to force the prop shaft out. A suitable piece of sheet metal on the transmission side will ensure that the right shaft gets dislodged. Steve Thomas CC27 MKIII -- Date: Fri, 16 May 2014 09:52:13 -0500 To: cnc-list@cnc-list.com Subject: Stus-List removing prop shaft coupling - how? From: cnc-list@cnc-list.com I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
Nate, This has come up before. I think the best advice (not mine) was to put a socket slightly smaller than the shaft against the end of the shaft and tighten the bolts on the coupling to force out the shaft. Joel. On Fri, May 16, 2014 at 10:52 AM, Nate Flesness via CnC-List cnc-list@cnc-list.com wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- Joel 301 541 8551 ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
Can be a tough job. On Windburn I pulled the shaft a couple of years ago ensure it could be removed in the water if it every was required. On my CC 30-1 the dimensions are: Shaft - 7/8 diameter Coupling - 3 1/2 outside diameter, three bolt holes Coupling - 1 5/8 inside machined cavity - 5/8 deep I had to use the bolts on the coupling to break the shaft free. I made up a spacer with 5 heavy washers, 1 7/16 outside diameter and 1/2 hole. I put a 1 1/2 long bolt through it and a nut just flush with the bolt end. Outside diameter of the bolt head and nut was just under 7/8. The assembly mated squarely with both the shaft and back of the engine and the washers held everything in position. The shaft was noticeably frozen in place. I had cleaned and oiled the coupling bolts and they still required significant torque to get the shaft moving. I think the use of a socket is fine as long as you can be 100% sure it is in place and the forces are not too high. I believe the problem I was having may have been caused by the set screw forcing a lip of metal up that was binding all the way out. I drilled a small depression into the shaft after it was out and made a matching round on the front of the set screw. I did a trial fit with the set screw tightened. When I took it apart by hand a firm pull and taps from a plastic mallet was enough. Two years later ( last winter ) I pulled the shaft and replaced the stuffing. Shaft came out without any requirement of special language this time. I am impressed by the Johnson Duramax stuffing. Previously the slightest tightening of the stuffing box stopped all water flow, and the most minute loosening that I could do would drip constantly even at rest. The new stuffing allows a range of drip rates to be adjusted. Michael Brown Windburn CC 30-1 Date: Fri, 16 May 2014 11:16:39 -0400 From: Joel Aronson via CnC-List cnc-list@cnc-list.com To: Nate Flesness nateflesn...@gmail.com, cnc-list@cnc-list.com cnc-list@cnc-list.com Subject: Re: Stus-List removing prop shaft coupling - how? Message-ID: CAEL16P_Y-sXjpmoJk9GwLmfu_Pi3=Yxjuzouz=1yvpjvnul...@mail.gmail.com Content-Type: text/plain; charset=utf-8 Nate, This has come up before. I think the best advice (not mine) was to put a socket slightly smaller than the shaft against the end of the shaft and tighten the bolts on the coupling to force out the shaft. Joel. On Fri, May 16, 2014 at 10:52 AM, Nate Flesness via CnC-List cnc-list@cnc-list.com wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- Joel 301 541 8551 * ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
a word of caution – be very careful with how you tighten the nuts. It never happened to me, but I read of people who managed to deform the coupling (on the transmission) in the process. Marek From: Joel Aronson via CnC-List Sent: Friday, May 16, 2014 11:16 AM To: Nate Flesness ; cnc-list@cnc-list.com Subject: Re: Stus-List removing prop shaft coupling - how? Nate, This has come up before. I think the best advice (not mine) was to put a socket slightly smaller than the shaft against the end of the shaft and tighten the bolts on the coupling to force out the shaft. Joel. On Fri, May 16, 2014 at 10:52 AM, Nate Flesness via CnC-List cnc-list@cnc-list.com wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com -- Joel 301 541 8551 ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
Maine Sail has written about this: http://www.pbase.com/mainecruising/new_shaft Ken H. On 16 May 2014 12:16, Josh Muckley via CnC-List cnc-list@cnc-list.comwrote: Then to save the trouble next time, get a split coupling for the shaft. On May 16, 2014 11:10 AM, via CnC-List cnc-list@cnc-list.com wrote: Some people have had success by positioning a nut that is smaller than the prop shaft, in between the coupling and then using the coupling bolts to force the prop shaft out. A suitable piece of sheet metal on the transmission side will ensure that the right shaft gets dislodged. Steve Thomas CC27 MKIII -- Date: Fri, 16 May 2014 09:52:13 -0500 To: cnc-list@cnc-list.com Subject: Stus-List removing prop shaft coupling - how? From: cnc-list@cnc-list.com I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
I used a 3 arm puller, PB blaster, a blowtorch, and the largest wrench I could fit on the puller, with a pipe on that as an extension. I had a 12 adjustable wrench wedged in to keep the shaft from turning (the puller would have turned with it). The adjustable wrench now has a very impressive bend to it, and it took a fair bit of heat and force to get off. Hopefully yours isn't that difficult. And as Mainsail says in his blog, easiest way is to cut it off... if time is money, go that route. Graham Collins Secret Plans CC 35-III #11 On 2014-05-16 11:52 AM, Nate Flesness via CnC-List wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
If all else fails, cut it in half and buy a new one. :) Dennis C. Touché 35-1 #83 Mandeville, LA Sent from my iPhone On May 16, 2014, at 3:36 PM, Graham Collins via CnC-List cnc-list@cnc-list.com wrote: I used a 3 arm puller, PB blaster, a blowtorch, and the largest wrench I could fit on the puller, with a pipe on that as an extension. I had a 12 adjustable wrench wedged in to keep the shaft from turning (the puller would have turned with it). The adjustable wrench now has a very impressive bend to it, and it took a fair bit of heat and force to get off. Hopefully yours isn't that difficult. And as Mainsail says in his blog, easiest way is to cut it off... if time is money, go that route. Graham Collins Secret Plans CC 35-III #11 On 2014-05-16 11:52 AM, Nate Flesness via CnC-List wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
Re: Stus-List removing prop shaft coupling - how?
I’m getting set up to do the same thing and from my investigations and discussions with local marine mechanics, I’ve determined: 1) The coupling would be a tolerance fit. 2) Cutting the old coupling off is the quickest method and you should do that at the keyway to minimize the potential for scoring the shaft itself. Otherwise a plate made-up with the same bolt pattern as the coupling and a rachet socket placed between the plate and the coupling + bolts through the plate and coupling can be used to press the coupling off. 3) Regardless of how you take it off, replace the coupling and take the shaft and new coupling it to a machinist to have a fit-and-face done on it and the shaft checked for straightness. 4) Might as well plan on doing the cutlass bearing at the same time. An old coupling would not have a tight fit on the shaft and the shaft torque would be taken up only by the shaft key shear that and the shaft backs out of the stuffing box and then you’d get to test out how good your bilge pump is. Peter Fell Sidney, BC CC 27 MkIII From: Dennis C. via CnC-List Sent: Friday, May 16, 2014 2:01 PM To: Graham Collins ; cnc-list@cnc-list.com Subject: Re: Stus-List removing prop shaft coupling - how? If all else fails, cut it in half and buy a new one. :) Dennis C. Touché 35-1 #83 Mandeville, LA Sent from my iPhone On May 16, 2014, at 3:36 PM, Graham Collins via CnC-List cnc-list@cnc-list.com wrote: I used a 3 arm puller, PB blaster, a blowtorch, and the largest wrench I could fit on the puller, with a pipe on that as an extension. I had a 12 adjustable wrench wedged in to keep the shaft from turning (the puller would have turned with it). The adjustable wrench now has a very impressive bend to it, and it took a fair bit of heat and force to get off. Hopefully yours isn't that difficult. And as Mainsail says in his blog, easiest way is to cut it off... if time is money, go that route. Graham Collins Secret Plans CC 35-III #11On 2014-05-16 11:52 AM, Nate Flesness via CnC-List wrote: I need to replace the stuffing box hose. Boat (30-1) is on the hard and I have the new Buck Algonquin hose, new packing, new clamps. Anyone have advice re removal of the forward prop shaft coupling? It is disconnected from the transmission and I've pulled the prop shaft aft, so there is some clearance between the couplings. The pbase website suggests that these couplings may be press fit (as in machine shop press) PB blaster applied, light taps with mallet do nothing so far, considering heating it with a torch? Nate Sarah Jean 1980 30-1 Siskiwit Bay Marine Lake Superior (with floating ice chunks mid-May.!) ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com ___ This List is provided by the CC Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
