Home |
Search |
Today's Posts |
|
Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
I've got a worn clutch pedal to repair. The clevis pin which acts directly
on the clutch master cylinder, has almost worn through the side of the pedal. I was thinking of mig welding up the worn hole & then remachining it, but thought I'd check with the "knowledge bank" here first.... I've put a pic of it in the dropbox: http://metalworking.com/Dropbox/PedalRepair.jpg There was the remains of a bearing / wear ring in the pedal. It appears to be hardish steel (magnetic) & is not bearing bronze which is what I thought it might be. Would a bearing ring machined from some phosphor bronze bearing material work? Alternatives? I've no idea what specs the phos. bronze is that I'd use - it'd be from the local hardware store supplier. Of course, I'm fitting a new clevis pin etc. thanks Rob |
#2
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
On Mon, 14 Jan 2008 17:04:39 +0900, "Robbo" wrote:
I've got a worn clutch pedal to repair. The clevis pin which acts directly on the clutch master cylinder, has almost worn through the side of the pedal. I was thinking of mig welding up the worn hole & then remachining it, but thought I'd check with the "knowledge bank" here first.... I've put a pic of it in the dropbox: http://metalworking.com/Dropbox/PedalRepair.jpg There was the remains of a bearing / wear ring in the pedal. It appears to be hardish steel (magnetic) & is not bearing bronze which is what I thought it might be. Would a bearing ring machined from some phosphor bronze bearing material work? Alternatives? I've no idea what specs the phos. bronze is that I'd use - it'd be from the local hardware store supplier. Of course, I'm fitting a new clevis pin etc. thanks Rob I think Id simply weld up the hole and redrill it, cause putting in a new bushing wouldnt leave much material. Big question is..how long did it take to wear like this? Can you use a bronze clevis pin as a sacrificial part? Gunner |
#3
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
Gunner wrote:
Can you use a bronze clevis pin as a sacrificial part? That seems reasonable, but: I have an engine with bronze bushes on hardened rocker pins. Surprisingly, the bushes seem to relatively unworn, but the steel pins are badly notched. What's going on? |
#4
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
I'd weld the whole end of the arm proud.
Grind back to original size. Drill new hole. You're good to go for at least as long as the first time it took to wear this much. Karl |
#5
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
"Robbo" wrote in message ... I've got a worn clutch pedal to repair. What is it out of? -Carl |
#6
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
"Carl Byrns" wrote in message news:KjIij.7823$na4.4731@trnddc05... "Robbo" wrote in message ... I've got a worn clutch pedal to repair. What is it out of? -Carl It's out of a Hino truck, 12 yrs old. I went investigating the "squeak" when the clutch operated and followed the trail of shiny metal flakes...... |
#7
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
"Jordan" wrote in message u... Gunner wrote: Can you use a bronze clevis pin as a sacrificial part? That seems reasonable, but: I have an engine with bronze bushes on hardened rocker pins. Surprisingly, the bushes seem to relatively unworn, but the steel pins are badly notched. What's going on? Many thanks for the replies Gunner, Jordan, Karl. Sounds like the mig is the way to go, if I can't get a new clevis assy or pin, I'll turn up a new pin from a 10mm bolt. Appreciate the help. Rob. |
#8
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
Jordan wrote:
Gunner wrote: Can you use a bronze clevis pin as a sacrificial part? That seems reasonable, but: I have an engine with bronze bushes on hardened rocker pins. Surprisingly, the bushes seem to relatively unworn, but the steel pins are badly notched. What's going on? Dust and dirt embed into the bronze, because it's soft, and proceed to eat the steel pin a bit, every time the pedal is moved. It is the basic principle in lapping. Grit embedded in a soft metal, cuts harder metal. Cheers Trevor Jones |
#9
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
Trevor Jones wrote:
Jordan wrote: Gunner wrote: Can you use a bronze clevis pin as a sacrificial part? That seems reasonable, but: I have an engine with bronze bushes on hardened rocker pins. Surprisingly, the bushes seem to relatively unworn, but the steel pins are badly notched. What's going on? Dust and dirt embed into the bronze, because it's soft, and proceed to eat the steel pin a bit, every time the pedal is moved. It is the basic principle in lapping. Grit embedded in a soft metal, cuts harder metal. Cheers Trevor Jones And further, since I cannot return to a post to edit it, the remains of the pin proceed to embed in the bronze, and wear the pin even worse. In short, replace the bronze bearing, while replacing the pin, as it's knackered too. Cheers Trevor Jones |
#10
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
"Robbo" wrote in message news:478b56dd$0$30864 It's out of a Hino truck, 12 yrs old. I went investigating the "squeak" when the clutch operated and followed the trail of shiny metal flakes...... What might work good here is a thin nylon bushing. I had a similar problem on an old Chevy step van. There the clutch linkage had several bell cranks and connecting rods to actuate the clutch, and the wear in each of these compounded to the point where the only functional adjustment held a slight pressure on the throw out bearing and caused the bearing to die a premature death. I did a weld and re-drill repair that worked very well. -- Roger Shoaf If you are not part of the solution, you are not dissolved in the solvent. |
#11
Posted to rec.crafts.metalworking
|
|||
|
|||
Clutch Pedal Repair - weld up & rebore?
On Mon, 14 Jan 2008 01:06:49 -0800, Gunner
wrote: On Mon, 14 Jan 2008 17:04:39 +0900, "Robbo" wrote: I've got a worn clutch pedal to repair. The clevis pin which acts directly on the clutch master cylinder, has almost worn through the side of the pedal. I was thinking of mig welding up the worn hole & then remachining it, but thought I'd check with the "knowledge bank" here first.... I've put a pic of it in the dropbox: http://metalworking.com/Dropbox/PedalRepair.jpg There was the remains of a bearing / wear ring in the pedal. It appears to be hardish steel (magnetic) & is not bearing bronze which is what I thought it might be. Would a bearing ring machined from some phosphor bronze bearing material work? Alternatives? I've no idea what specs the phos. bronze is that I'd use - it'd be from the local hardware store supplier. Of course, I'm fitting a new clevis pin etc. thanks Rob I think Id simply weld up the hole and redrill it, cause putting in a new bushing wouldnt leave much material. Big question is..how long did it take to wear like this? Can you use a bronze clevis pin as a sacrificial part? Gunner The picture I see looks like a hammer - but I'd just braze the hole almost closed, making it as thick as possible, and then drill it out and put in the pin. Braze makes a decent bearing. Put a bit of greese on it when you assemble it. -- Posted via a free Usenet account from http://www.teranews.com |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Ryobi Strimmer? Clutch or no clutch? | UK diy | |||
Pedal Powered Beer Wagon | Metalworking | |||
Fingertip or foot pedal tig? | Metalworking | |||
Anyone know where I can find pedal car plans | Metalworking | |||
Spindle rebore/grind for a Denbigh horizontal | Metalworking |