Adyusting hydraulic valves????

I always used 1/2 turn after the pushrod gets hard to turn. Yu can go 3/4
like the book says but I would rather run loose then have a valve not quite
going closed and burn it.

Doug



"Chief McGee" <mcgeepby DeleteThis @mchsi.com> wrote in message
news:NOnsj.30642$yE1.5373@attbi_s21...
> 1989 chevy 2500, 350 V8
> Replaced head gaskets, need to adjust the hydraulic valves
> The books say to set piston at TDC, tighten valves till you can't turn
> the
> push rod. Then the books differ: One says to go an additional ½ turn.
> Another says to go an additional ¾ turn. Next book says to go one more
> full
> turn.
> It seems to me that a ½ turn would be correct, but I don't want to have to
> do this again if the motor does not run right.
> Anyone know for sure? Thanks, Chief
>
>
 >> Stay informed about: Adyusting hydraulic valves???? 

Meeber's wrote:
> Its one hel-of-a-mess, but I always did mine while the engine is
> running. Initial adjustment after they are tight, warm the engine,
> remove the valve cover, back off the nut until you hear a "clacking"
> tightning the nut until just quiet and then 1/2 turn further. YMMV

Best way to do it.

To help deal with the mess, I used to get an old valve cover and cut out
where needed to get at the rocker nuts. Made it much cleaner!


>
> "Chief McGee" <mcgeepby.TakeThisOut@mchsi.com> wrote in message
> news:NOnsj.30642$yE1.5373@attbi_s21...
>> 1989 chevy 2500, 350 V8
>> Replaced head gaskets, need to adjust the hydraulic valves
>> The books say to set piston at TDC, tighten valves till you can't
>> turn the
>> push rod. Then the books differ: One says to go an additional ½
>> turn. Another says to go an additional ¾ turn. Next book says to go
>> one more full
>> turn.
>> It seems to me that a ½ turn would be correct, but I don't want to
>> have to do this again if the motor does not run right.
>> Anyone know for sure? Thanks, Chief
 >> Stay informed about: Adyusting hydraulic valves???? 

Chief McGee wrote:
> 1989 chevy 2500, 350 V8
> Replaced head gaskets, need to adjust the hydraulic valves
> The books say to set piston at TDC, tighten valves till you can't turn the
> push rod. Then the books differ: One says to go an additional ½ turn.
> Another says to go an additional ¾ turn. Next book says to go one more full
> turn.
> It seems to me that a ½ turn would be correct, but I don't want to have to
> do this again if the motor does not run right.
> Anyone know for sure? Thanks, Chief
>
>
Make sure you understand what they mean by the push rod not turning.
They mean that all the excess play is out and you can't rattle it around
in the seat or rocker and that the rocker is seated. They don't mean
that you cannot turn the push rod at all.
A better way to adjust them on the older engines is to use a primer and
turn the oil pump so that they are filled with oil. Then with the engine
ready to go start it with the valve covers off. back off the rocker nut
until you can hear it tick then tighten down till the tick stops. Now go
one full turn.

Steve W.
 >> Stay informed about: Adyusting hydraulic valves???? 

"Chief McGee" <mcgeepby.TakeThisOut@mchsi.com> wrote in message
news:NOnsj.30642$yE1.5373@attbi_s21...
> 1989 chevy 2500, 350 V8
> Replaced head gaskets, need to adjust the hydraulic valves
> The books say to set piston at TDC, tighten valves till you can't turn
> the
> push rod. Then the books differ: One says to go an additional ½ turn.
> Another says to go an additional ¾ turn. Next book says to go one more
> full
> turn.
> It seems to me that a ½ turn would be correct, but I don't want to have to
> do this again if the motor does not run right.
> Anyone know for sure? Thanks, Chief
>
do it like the book says, TDC with the *valves closed* on the cyl your
adjusting, just go a half and you will be good. You can do it running but
its a mess and not really needed.
 >> Stay informed about: Adyusting hydraulic valves???? 

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 >> Stay informed about: Adyusting hydraulic valves????