<VV> Piston removal

[Sethracer at aol.com]

In a message dated 2/17/2007 1:02:24 PM Pacific Standard Time,  
bryan at skiblack.com writes:

So, I  have a bunch of rods and pistons, and I'd like to remove the old  
pistons.  I see there's a special guide tool in the shop manual to  use 
with a press, but I have no idea where to get one.  Any  suggestions?  
I'm further guessing that heating the assembly would be  a good idea for 
either removing or  installing.

--Bryan




If you are just removing the pins to use the rods and toss the pistons, You  
don't need to heat them. I have done this. Heating the rods and cooling the  
pins might be appropriate for installation.  I does depend on how tight the  
original press fit was. But remember the rod and the pin are both steel, and  
will expand at the same rate when heated. It might be a looser fit on the  
piston, (aluminum will expand more) but it should be a loose fit on there right  
now. Just put a good support under the piston and press the pin out. I use a  
tall HD socket of the correct size diameter (slightly smaller than the pin) Some 
 may be tight on the rod. That is the bang you will hear when they "give up". 
 Also, if one refuses to move and the pressure builds up, move to the side 
and  stay out of the line of fire. - Seth