From: grntrks@juno.com
Date: Mon May 16 2005 - 22:17:04 PDT
PJ
It is possible to check the rockers without running the engine, but it's
a major time consumer to do. I have done this on V8 gas engines and don't
see why you could not do it on a diesel.
First find a way to prevent the engine from starting.
Next rig a remote starter button to engage the starter. On the M35 you
could unplug the dash starter button and plug your remote right into the
original wires. Set the engine stop control in stop position and secure
it there.
With the engine COLD and valve covers off, you should be able to "bump"
the starter enough to bring each rocker arm to the top of its stroke (
one at a time ). Then you can check clearances with a feeler guage and by
trying to move the rocker up/down asnd side to side. Up/down should be
able to be adjusted. If side to side play the bushing has worn and should
be replaced.
With the engine cold, the gap will be at its widest and you don't get
blistered fingers. With the engine shut down you won't get oil
everywhere. Most of the oil will have drained back to the pan. The engine
will not turn long enough to damage it during this process.
God luck,
Frank Cox - 'Nam 1966
MVPA 14530
'45 GMC 353 DUKW
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