TR2/3/3A TR3 rockershaft disassembly/reassembly

[Mkutz]

After I cracked some of my pedestals on my rockershaft, I have sourced some used pedestals and am ready to rebuild the shaft. In terms of disassembly, it looks like I need to remove two pins on the ends, remove the springs and the arms. How are the pedestals themselves removed? I saw other postings where folks had to twist them off with pliers, use boiling water or a little heat from a propane torch to work them off. Is that advisable?

For the reassembly, it looks like I get the rear pedestal to line up with the oil hole on the shaft and square the remaining pedestals from that one? Also, I bought a nylatron rocker spacer set -- will this make any real difference over the standard spring configuration?
Thanks for the advice!

 

[poolboy]

Once you get to the reassembly part, its important to get the proper space so that the rockers line up as nearly perfectly as possible with the top of the valve stem. Sometimes the spacers do it perfectly and sometimes you have to do a little adjusting with additional spacers or trimming the nylatron to length.
I'd be interested to see the tips for removing pedestals, myself. A couple really were almost "sweated on" tight when I fooled with mine.

 

[DougF]

I believe the tightness is more of a wear factor or lack of lubrication. When I installed my rebuilt rockers onto a new shaft, they slid on smoothly. They had close tolerances, but nothing tight.

When removing the rockers from my TR6, I lined them up to the non-worn section of the shaft and worked them past it and continued on to the next section. If they aren't aligned, they will bind. Some areas were easier than others, but I never used heat or tools.

There is a company in CA that will rebush and reface your rockers for less than the cost of new. They will also rebuild the shaft. I don't recall their name, but I sure someone else does or a quick search will find it.

 

[Mkutz]

The rockers don't look like they'll be a problem. What is tight are the pedestals.

 

[DougF]

Possibly electolysis between the aluminum pedestal and steel shaft. Since the shaft doesn't move and lubrication probably doesn't get in.

If they don't break free by twisting, place the shaft between two blocks of wood atop a vise or some sturdy elevated surface and strike the shaft with a dead blow hammer.

 

[Andrew Mace]

There is a company in CA that will rebush and reface your rockers for less than the cost of new. They will also rebuild the shaft. I don't recall their name, but I sure someone else does or a quick search will find it.

Probably Rocker Arm Specialist !