|
Removing the cylinders and pistons is no big deal. Just mark them first.
Start by marking everything.
Remove all the cylinders, very simple, just pull them off.
Remove the pistons. Remove the clips and use the back of a 3/8 extension to drive out the pins.
Clean the pistons by soaking them in tide and hot water for a couple of hours.
Tape up the rings and ring lands using masking tape.
Have the pistons bead blasted. UGG I hate to say this because the beads can stick to the piston and do much damage if not removed. NEVER bead blast the ring lands. Use scrapers or an old ring for this. I know this is done all the time but according to engine rebuilding news letters, it is a common reason for failures. Thats the real pros, not amateurs talking there. Their livelyhood depends on doing it right, so you gotta beleive them.
If you inspect the pistons very carefully and see a crack, you know you have to replace them. If you do not see a crack and really really want to be sure you can buy dye penetrents for about $30. It is a red dye in a spray can. Just spray it on, wipe with some spray on cleaner, let it set for an hour, and spray on a developer. Any cracks will show up big time.
No cracks, clean again in hot water and Tide laundry detergent. Brush the surfaces to make sure all glass beads are removed.
Make sure to use new piston pin clips on reassembly. They are avilable. See any shop that does a lot of rebuilds for these.
WAYNE- it would be a real service if you could sell these things. They can be hard to find for the weekend mechanic. A couple of bucks for the lot, but they could ruin your engine if you do not replace them.
|