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Yes, obviously the Valves need to be closed when we insert air into the cylinders before changes springs!...
Good job doing your own maintenance! ...👍🏻👊🏻🏁🏁
I have been beating my head against the wall. I purchased the offset 24mm wrench, I can not get it to work on the balancer bolt. Maybe the offset isn't enough. Is the 15/16 SAE, which is a bit smaller, a more true fit for that bolt?
I finally got a short 15/16 inch socket that fits the bolt, the 24mm is just to big.
I am not sure what engine you were working on, it isn't the LT1. With only 40 psi, if the piston isn't at TDC it spins the crank. LOL,,,,,,,LOL,,,,,,LOL,,,,,LOL!
Actually, it doesn't matter if the crank spins, all of the valves are closed because the rocker arms are removed.
The 12 point 27mm socket, kind of fits, but the 15/16 fits better. I have also figures out, it doesn't matter where the piston is, with all the rocker arms removed, all of the valves are closed.
I got that tool. It was very difficult to make it work. The longer tong would slip off the spring, just when you got it compressed. Extremely frustrating. I was about to toss it. I bent each of the tongs inward just a bit. I bent the tong at the hole, about half way up. It now holds the spring much better.
Originally Posted by Dcasole
I did not because it depends on what type of "keeper" release tool you are using. I used a spring compressor that does not place any load on the retainer or the valve , I did not spin the crank at all using this type as I was confident that the air would hold up the valve and it was much easier because I did not have to bring each piston up to TDC , See below
But some of the others are like a lever that push down on the top of retainer to release the keepers , if you are using one of those I would spin the crank if you are worried about dropping a valve
I have 20,000 on my new engine so i am probably going to be doing the same soon
