For hydraulic lifters comp cams say's:
Turn the engine over by hand in the direction of rotation until the exhaust
pushrod just begins to move upward to open the valve. You are now ready to
adjust the INTAKE rocker of the same cylinder.
Carefully tighten the nut on the intake rocker arm while spinning the
pushrod with your fingertips. You will feel a slight resistance in the
pushrod when you have taken up all of the clearance. This is referred to as
"zero lash." Now turn the adjusting nut 1/2 turn more. Generally, 1/2 turn
on the adjusting nut will provide the suggested .030" preload.
Once again, turn the engine in its direction of running rotation until the
intake pushrod comes all the way up and almost all the way back down. Now
set the EXHAUST rocker to "zero lash" and add 1/2 turn. You now have set
the pre-load on one cylinder. Repeat these same steps to set the pre-load
on each cylinder.
Hope this Helps..........More typing then I've done in a while!
Joe
-----Original Message-----
From: Pat Bibbs <PatB@iewc.com>
To: old-chevy-truck@yahoogroups.com <old-chevy-truck@yahoogroups.com>;
oletrucks@autox.team.net <oletrucks@autox.team.net>
Date: Sunday, May 27, 2001 1:53 PM
Subject: [oletrucks] Hydraulic Lifters
>I'm a semi-novice on this subject.
>I have set lash on standard lifters but I'm not sure about hydraulic one.
>
>A new rebuild, new Comp-Cam roller lifters and Crane roller rockers.
>
>Engine has not been started yet.
>I understand that it is zero lash, I know how to make sure the valve is
>closed.
>When I run the nut down on the post, how far should I turn it?
>Until it doesn't rattle, then a half turn ? Then set the set screw ?
>
>I just want to make sure I don't go too far.
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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