Muttster: A long, slow '74 resto-mod

grandpaul said:
I've never seen a hunk taken out of the roller like that. I would think it would be virtually ineffective with that cut-out.
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Clutch has always worked fine.
 
L.A.B. said:
gortnipper said:
So, my clutch operating lever and roller have quite a bit of wear and I will replace those.

I took this pic of a bunch of parts that need replacing (sorry for the crummy pic- it is in a ziploc) and you can clearly see the roller is lobed.


However, on the AN page the same part does not appear to have this .

What's the deal?
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The roller is supposed to be circular. :D
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I gather that. Wonder what this is from the cut out isnt from wear - it is part of it?

I will just get a replacement.
 
gortnipper said:
Wonder what this is from?
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It probably is an original roller which has developed a flat spot and gradually worn away on the cam of the lifter arm, possibly due to it being clamped tight between the fingers of the lifter body at some time in the past? This can certainly happen if the small inner bush 04-0065 is left out.
 
I dont know.

The small inner bush was there.

It is definitely not flat - but concave. The tips of the "lobes" are worn shiny, but the concave section really looks the same materially as the rest of the exterior and face.

Weird.
 
Another question...

When I finished pulling all the parts I put them in my parts cleaner - a oil drain tub with some petrol - to clean everything up. One of the last items out was the kickstart return spring, which was covered in goo. Black paint that had dissolved in the petrol. Oops.

In looking at the AN page, the new parts dont look painted. Does anyone know if they are?

Muttster: A long, slow '74 resto-mod


I just let it soak for a while and scrubbed the whole thing clean with a copper brush. I assume they were painted to prevent rust from condensation, and the addition of the breather tube supersedes the need for paint?
 
gortnipper said:
When I finished pulling all the parts I put them in my parts cleaner - a oil drain tub with some petrol - to clean everything up. One of the last items out was the kickstart return spring, which was covered in goo. Black paint that had dissolved in the petrol. Oops.

In looking at the AN page, the new parts dont look painted. Does anyone know if they are?
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The gearbox springs aren't painted.
 
L.A.B. said:
gortnipper said:
When I finished pulling all the parts I put them in my parts cleaner - a oil drain tub with some petrol - to clean everything up. One of the last items out was the kickstart return spring, which was covered in goo. Black paint that had dissolved in the petrol. Oops.

In looking at the AN page, the new parts dont look painted. Does anyone know if they are?
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The gearbox springs aren't painted.
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Well, somebody has done some funny stuff in here then.
 
L.A.B. said:
Brass-cage, so very likely the exploding Portuguese FAG bearing! (no metal cage ball bearing is "acceptable" so replace it with the roller upgrade or non-metallic cage Hemmings 6203TB bearing)

The bearing should lever off easily enough.
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I had to add a little heat to the bearing to get it to lever off, but you were right Portuguese it is.

Muttster: A long, slow '74 resto-mod
 
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I suppose this falls into the "Should have left well enough alone" category. But, me being me, I just couldnt do that. No. All of the other bushes had a bit much play for my liking. I watched the video, how hard can it be? I have an old big tap, just the right size. So what if it is a bit finer thread than Mick's?

Muttster: A long, slow '74 resto-mod


It is well in there. I added some heat, enough so that I couldnt hold onto it for long, but I didnt want to heat it up too much, and I pounded it. And pounded it. Pulled the tap.

Tapped it in further/ Added some penetrating oil and a little more heat. And pounded it some more. And some more.

That bush is well and truly in there.

Maybe if I let it sit there for a couple days it will come to its senses. LOL.

Any ideas?
 
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You can slice a groove into it with a hacksaw blade, then chisel it out. The steel is hard and won't be harmed if you are reasonably careful.
 
grandpaul said:
You can slice a groove into it with a hacksaw blade, then chisel it out. The steel is hard and won't be harmed if you are reasonably careful.
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Yeah, hoping not to do that if I can help it.

I am hoping the penetrating oil overnight has helped.

How much heat can I put on it and not affect the hardening?
 
B@stard. I hope I can get the new one in.

I will have to freeze it.

Muttster: A long, slow '74 resto-mod
 
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Heat and cold are your best friends for jobs like this for both getting old bushes out and putting new ones back in.

I found that my electric heat gun, deep freeze and can of freezer spray have become among my most consulted friends recently.

Rubber mallet and clutch spring compressor are also good acquaintances.
 
Got stuff back from the blaster. Washed everything in hot soapy water with a stiff brush, and hole brushes, hose on jet to rinse, then hit them with compressor air to dry. Repeat. Then hit them a third time, this time with the pressure washer (put on a glove after the first part - ouch) and then air compressor.

Took the bits to be shiny to the polisher today.

Muttster: A long, slow '74 resto-mod
Muttster: A long, slow '74 resto-mod
 
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Do you have anything in mind to preserve the matte finish on the cases, etc? Sandblasting can peen the pores of the alloy a bit to keep oxidation to a minimum, but I'm not sure about the vapor blast.
 
Danno said:
Do you have anything in mind to preserve the matte finish on the cases, etc? Sandblasting can peen the pores of the alloy a bit to keep oxidation to a minimum, but I'm not sure about the vapor blast.
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I thought sand blasting opened the pores... And vapour blasting closed them ?
 
What Nigel said. Vapour beating is not CO2 blasting here: but glass beads suspended in water so they don't fracture.

I had thought about a silicon spray wiped smooth, but after reading a bit I think that may be folly.
 
Vapor blasting, and hydro blasting are two totally different things.

Vapor blasting is another name for steam cleaning; true "vapor" blasting, no media.
 
grandpaul said:
Vapor blasting, and hydro blasting are two totally different things.

Vapor blasting is another name for steam cleaning; true "vapor" blasting, no media.
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Not so sure. All the places I see, vapor blasting is a wet media blast, which is different from either hydroblasting or dry ice blasting.

"A specially designed glandless polyurethane pump agitates water and media into a slurry, which is contained within the cabinet sump... The slurry is pumped at approximately 2 bar to the nozzle, and compressed air is introduced at the blast nozzle to accelerate the slurry and provide the cleaning effect on impact, albeit cushioned."

http://www.vaporblastingequipment.com/w ... ng-process

https://en.wikipedia.org/wiki/Abrasive_blasting
 
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