rocker box removal
Stellar HDF Member
Joined: Feb 2006
Posts: 3,035
Likes: 17
From: Houston Texas
RE: rocker box removal
mojo...
I did not fully understand your question regarding what you want to do.
If you want to remove the rocker boxes, you cannot remove the rear box without removing the rear cylinder head with it.
If you want to only remove and replace the push rod tubes, the rocker boxes do not come off to do this.
The push rods will have to be removed to get the tubes out.
In either case the push rods must be adjusted after you put it all back together. This is not a big deal and in fact the push rod clearance should be checked and adjusted (if needed) on a fairly often basis, like every 6 months or so.......pg
I did not fully understand your question regarding what you want to do.
If you want to remove the rocker boxes, you cannot remove the rear box without removing the rear cylinder head with it.
If you want to only remove and replace the push rod tubes, the rocker boxes do not come off to do this.
The push rods will have to be removed to get the tubes out.
In either case the push rods must be adjusted after you put it all back together. This is not a big deal and in fact the push rod clearance should be checked and adjusted (if needed) on a fairly often basis, like every 6 months or so.......pg
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Tourer
Joined: Apr 2006
Posts: 351
Likes: 0
From:
RE: rocker box removal
I should have been a little more specific. I have the engine out of the frame and I was going to take the rocker boxes off to polish them, and then install new pushrod tubes. I was curious if it could be done without adjusting anything. Thanks for the reply.
Stellar HDF Member
Joined: Feb 2006
Posts: 3,035
Likes: 17
From: Houston Texas
RE: rocker box removal
mojo....
I think the short answer is that you must adjust the push rods. Thanks for clearing up the question I had. Out of the frame is good.
When you remove a rocker box at least one of the two valves is open which means spring pressure is trying to lift that box as you undo the bolts. Same thing happens when you try to put it back together. You do not want to do this.
It is going to work much better by removing the four push rods to begin with. Take some tape and mark each push rod so you can put it back in the same place. This is not absolutely necessary, but hey, why not? It is a good habit to put things back where they came from (Mom was right)
Look at the three corks in each of the push rod tubes and replace these if they are not in perfect condition. Ditto on the rubber sleeves on each of the oil lines.
You probably know this, but when you start to adjust the push rods, raise the like cam in the opposite cylinder to it's highest point and then adjust the other. This will be the case for each of the 4 push rods......pg
I think the short answer is that you must adjust the push rods. Thanks for clearing up the question I had. Out of the frame is good.
When you remove a rocker box at least one of the two valves is open which means spring pressure is trying to lift that box as you undo the bolts. Same thing happens when you try to put it back together. You do not want to do this.
It is going to work much better by removing the four push rods to begin with. Take some tape and mark each push rod so you can put it back in the same place. This is not absolutely necessary, but hey, why not? It is a good habit to put things back where they came from (Mom was right)
Look at the three corks in each of the push rod tubes and replace these if they are not in perfect condition. Ditto on the rubber sleeves on each of the oil lines.
You probably know this, but when you start to adjust the push rods, raise the like cam in the opposite cylinder to it's highest point and then adjust the other. This will be the case for each of the 4 push rods......pg
Road Master
Joined: Aug 2006
Posts: 751
Likes: 6
From: 500 miles south from Artic Circle
RE: rocker box removal
Piniongear is right , basicly you can remove rockerbox without removing pushrods but don't do it.
Even installing new gasket on rockerbox, makes it vital to adjust pushrods.
In practice you can't install rockerbox back without removing pushrods. Adjusting pushrods should be basic skill for every irohead owner as adjusting ignition ( if you are running with points). It isn't so hard to do
Even installing new gasket on rockerbox, makes it vital to adjust pushrods.
In practice you can't install rockerbox back without removing pushrods. Adjusting pushrods should be basic skill for every irohead owner as adjusting ignition ( if you are running with points). It isn't so hard to do
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