Rocker Shaft Puller (2010)

Nspeed,
He did tell me "precision measurement and inspection of valve springs" on the bill. He did use my old springs and verbally assured me that he had the equipment to properly measure the spring load. I have to take him at his word on that, I was not there.

Dave
69S

swooshdave said:

How do you measure the springload?

Click to expand...

With a springloaddevice :mrgreen:

It's a small universal pressure gauge slightly adjusted for its purpose. I will post a picture of mine later.

DogT said:

Nspeed,
He did tell me "precision measurement and inspection of valve springs" on the bill.
Dave
69S

Click to expand...

So you are probably ok.

I notice in Mick's reassembly DVD that his rocker shaft went in 3/4 way with just fingers and he just tapped it on it. Maybe mine is the same, but most likely not, if tight I'll use the heat. Haven't seen his removal DVD yet, the boss is napping on the sofa.

How thick are the thrust washers so I know how many to get?

Dave
69S

How thick are the thrust washers so I know how many to get?

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I just bought some from Old Britts a few weeks ago. They measure between .014" and .0145" . Looking at the picture of your valve, my guess would be you may need up to 3 more. They are cheap. Get a coupe of extras.

Bill G

nortonspeed said:

swooshdave said:

How do you measure the springload?

Click to expand...

With a springloaddevice :mrgreen:

It's a small universal pressure gauge slightly adjusted for its purpose. I will post a picture of mine later.

Click to expand...

Universal valve pressure gauge with home made auxiliary.
Essential if you want to do your own headwork properly.

NSpeed,
Thanks for all that info.

Just for reference, I just watched Mick's DVD on removing the rocker spindles and he didn't heat the head. He said you may have to if they are really, really tight. His removal tool is similar to the one I fashioned up, but of course better. I'll see how it goes.

Dave
69S

DogT said:

Just for reference, I just watched Mick's DVD on removing the rocker spindles and he didn't heat the head. He said you may have to if they are really, really tight.

Click to expand...

However, I strongly suggest you use some heat! Every time the spindles are pulled out cold makes them a little slacker fit in the head.

Remember it's the fit when the assembly is hot that's important. If the spindles are not tight when the assembly is cold then it will be worse when the cylinder head is up to its running temperature and the rather poor tabs on the cover plates may not prevent the spindles rotating.

LAB,
Thanks, I'll do that. No reason to make things looser than necessary.

Dave
69S

I finally got my new used RH exhaust rocker arm installed and used 2 washers to get it over where it needed to be centered on the valve face. Went in mostly like in Mick's DVD, about 3/4 way by hand. Used a bit of heat to get it out. Must have been something wrong with the adjuster thread in the original rocker arm. New one fits the mushroom adjuster just fine. Can't figure out why both rocker arms are hitting the valve face to the right when the original adjuster and valve was dead on. Could it be the new valve guide has shifted the valve? Mick does say in his DVD that it is the RH exhaust that always has problems centering the adjuster on the valve. I do wish Leo had taken care of that, but he most likely would have taken another few weeks and charged me more for a new arm, etc. I only ended up spending another $50 for a couple of washers and a used rocker arm from British Only, the only place I could find one in the US. Norvil had a new one, but was very pricey. The used one looked fine and was actually a bit heavier than my old one. Head is on and torqued down now.

Dave
69S

Congrates to get one more simple, with many delays, task behind thee. Don't seem like you took opportunity to trim the close passing rock arm ends to ease the push rod placing. Let me know how soon that little mod comes to mind while in position of Norton worship.

hobot

Didn't know there was a mod to the rocker arms. I didn't have any trouble getting the rods up in the head, used some rubber bands to hold the arms up as far as they go and more rubbers to hold the rods up in the head, then when head on and the rods down on the tappets, release rubber bands to get arms in some real position, then reinstall rubbers to hold the arms in the rod sockets after fiddling, turn over engine slowly to make sure nothing interferes, tighten head bolts, Didn't take maybe 20 minutes including coating the gasket.

Dave
69S

DogT said:

I may need to pull one of my rockers out to replace it, so was searching around for a puller. Thread into rocker shaft is 5/16-26 CEI. Found the studs and nuts on left over crank parts are 5/16-26, so threaded the stud into the rocker shaft and was looking for a spacer to put on it. Lo and behold the spacers from my left over old Isolastics work a treat. Used the smaller one with the donut on it to get it started and plan to use the longer one to keep it going. I may have to judiciously use lots of 5/16 washers, but it looks like it is do-able.

How do I get this thing back in, maybe a clamp will press it in, I have one that big. snipped
Dave

Click to expand...

Very resourceful, Dave. I did something similar.
A more controlled method of removing the rocker shaft spindles is to use a puller. This can be easily fabricated using a 15mm deep 3/8" drive socket, a 5/16" -
26 CEI bolt of appropriate length & a 5/16" flat washer. Install the washer onto the bolt. Place the open end of the socket against the cylinder head. Verify that the socket wall will not foul the spindle as it is removed. Insert the bolt/washer through the socket. Thread the bolt into the spindle by hand. Snug the bolt up, so that the socket does not fall or move on the head. Double check that the socket will not foul the spindle. Tighten the bolt with a spanner [wrench] or ratchet/socket to withdraw the spindle. It is useful to catch the rocker spring & washers with a magnet as you withdraw the spindle.

Then I went & purchased a purpose made puller. I bought this 35 years ago, so I don't really know who I purchased it from. I probably bought it from either DomiRacer or KK Cycle Supply [both now defunct].






Charlie

I have one of those around here somewhere, but can't find it, so I made a quick-and-dirty one out of an old cookie cutter spark plug socket and a bolt welded to another bolt (mixed threads, ya know). You can heat the rocker bore bosses and the top of the head with a small propane torch and easily pull a spindle with no damage to valve seals.

How does Charlie even find these threads that are 8 years old?