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Joined: Jul 2020
Posts: 16
New to Talk Morgan
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OP
New to Talk Morgan
Joined: Jul 2020
Posts: 16 |
Appears the click was coming from the pushrod where it enters the piston cup. Rotated the pushrod 180 degrees and readjusted Click gone! Thanks for your help all Simon
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Joined: Feb 2016
Posts: 7,917 Likes: 216
Talk Morgan Guru
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Talk Morgan Guru
Joined: Feb 2016
Posts: 7,917 Likes: 216 |
No click from my pedal but whilst ferreting in drivers footwell found a fair amount of play with clutch pedal despite regular lubrication and less than 19,000 miles. Pulled out clevis pin and found it worn as below right. ![[Linked Image]](https://i.imgur.com/fe4nEEo.jpg) Note the wear is tapered to one side suggesting pedal is twisting in operation. Also no washers found which there should be, against the split pin at least  Replacement stainless pin with washers and fresh split pin left, ready for re-assembly. Clevis pins 3/8" x 7/8" long ordered from here. Note parts manual lists clevis pins as 7/16" diam so ordered a pair of those as well. Whilst too big to fit they may be useful in the future if holes in pedal become too worn.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone
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Joined: Nov 2018
Posts: 1,024 Likes: 15
Has a lot to Say!
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Has a lot to Say!
Joined: Nov 2018
Posts: 1,024 Likes: 15 |
As told I (or better my MOG) had trouble with the clutch mastercylinder.
I renew it and after the work I also notice such a noise. So it‘s caused in my repair. Now I‘ m happy to read it could be the pushrod.
The MOG is in hibernation so there is a good time for a little work.
Greets René
2018 plus4 (sports green) with a homemade really shiny red tinted dash…
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Joined: Jan 2013
Posts: 1,148 Likes: 18
Has a lot to Say!
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Has a lot to Say!
Joined: Jan 2013
Posts: 1,148 Likes: 18 |
Replacing the pivot pin with stainless will accelerate wear to the pedal and actuautor keep it lubed...
Morgans 1934 MX, 1947 Series 1, 1956 +4 TR4, 2000 +4 T16 Triumph Herald 1969 13/60 Morris 1970
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Joined: Nov 2018
Posts: 1,024 Likes: 15
Has a lot to Say!
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Has a lot to Say!
Joined: Nov 2018
Posts: 1,024 Likes: 15 |
Replacing the pivot pin with stainless will accelerate wear to the pedal and actuautor keep it lubed... I think in the same way. But I remember that at my Harley are some nylonbushes in the the handlevers. And it looks they would fit. If this would work no more worn pins. Have a look here: https://www.wwag.com/cgi-bin/WebObjects/WebSite.woa/wa/DirectAction?page=%21WW2671 There is the original Harley partnumber (OEM 45036-82) listed, so with this number you can get it worldwide from a Harley-Dealer or aftermarket dealer. Greets René
Last edited by xc68anc; 24/12/21 09:10 AM.
2018 plus4 (sports green) with a homemade really shiny red tinted dash…
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Joined: Aug 2021
Posts: 468 Likes: 52
Learner Plates Off!
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Learner Plates Off!
Joined: Aug 2021
Posts: 468 Likes: 52 |
No click from my pedal but whilst ferreting in drivers footwell found a fair amount of play with clutch pedal despite regular lubrication and less than 19,000 miles. Pulled out clevis pin and found it worn as below right. ![[Linked Image]](https://i.imgur.com/fe4nEEo.jpg) Note the wear is tapered to one side suggesting pedal is twisting in operation. Also no washers found which there should be, against the split pin at least  Replacement stainless pin with washers and fresh split pin left, ready for re-assembly. Clevis pins 3/8" x 7/8" long ordered from here. Note parts manual lists clevis pins as 7/16" diam so ordered a pair of those as well. Whilst too big to fit they may be useful in the future if holes in pedal become too worn. Hi Richard, mine was worn exactly the same after 9K miles on our Roadster.. I pulled the pedal box assy when looking for a brake pedal issue and corrected the wear in the clutch arm/clevis pin at the same time by making a new pin. I re assembled with hi pressure grease, but due to the small bearing area between the arm/pin I suspect it will wear again. I believe some of the one sided pin wear is due to the angle your leg/foot pushes the clutch pedal together with inbuilt loose tolerance between pin and clutch pedal arm. Also as per your car, the flat washer was missing between the clevis and split pin and I agree having a washer fitted will help reduce the side twist on the pin.. When I stripped the pedal box I noted that the clevis pin dia used on the brake is larger than the clutch pin dia.. The larger dia pin gives a greater surface area to transmit the force and should reduce wear due to this. In the future if the pedal arm pin hole wears oval it should be relatively straight forward to bore it larger and tig weld in a top hat type insert to bring it back to spec, or alternatively fill the area with tig weld and rebore.
Last edited by Davetherave; 24/12/21 10:08 AM.
Dave Plus Six "Squeak" Roadster departed. 1936 BSA Empire Star Q8. 1935 BSA W7-35. 1938 BSA M20
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Joined: Feb 2016
Posts: 7,917 Likes: 216
Talk Morgan Guru
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Talk Morgan Guru
Joined: Feb 2016
Posts: 7,917 Likes: 216 |
Hi Richard, mine was worn exactly the same after 9K miles on our Roadster.. I pulled the pedal box assy when looking for a brake pedal issue and corrected the wear in the clutch arm/clevis pin at the same time by making a new pin. I re assembled with hi pressure grease, but due to the small bearing area between the arm/pin I suspect it will wear again. I believe some of the one sided pin wear is due to the angle your leg/foot pushes the clutch pedal together with inbuilt loose tolerance between pin and clutch pedal arm. Also as per your car, the flat washer was missing between the clevis and split pin and I agree having a washer fitted will help reduce the side twist on the pin.. When I stripped the pedal box I noted that the clevis pin dia used on the brake is larger than the clutch pin dia.. The larger dia pin gives a greater surface area to transmit the force and should reduce wear due to this. In the future if the pedal arm pin hole wears oval it should be relatively straight forward to bore it larger and tig weld in a top hat type insert to bring it back to spec, or alternatively fill the area with tig weld and rebore. I agree with all your thoughts and findings Dave and will keep fingers crossed regarding future wear. One hope is that stainless will wear slower. I did look at a suitable rose joint solution but couldn't find anything that transmitted the force to master cylinder square on.
Richard
2018 Roadster 3.7 1966 Land Rover S2a 88 2024 Royal Enfield Guerrilla 450 1945 Guzzi Airone
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