From: grntrks@juno.com
Date: Tue May 17 2005 - 00:25:44 PDT
Sorry, I did not make my point clear about the use of the starter. I
would not continuously rotate the engine with the starter. The starter
could absolutely overheat. Only engage the starter long enough to bring
one lifter/pushrod/rocker to the top of its stroke, check for excessive
play, then move to the next rocker and repeat for each succeeding rocker.
I agree that for accuracy the engine should be at normal operating temp,
but for our purposes here cold will be best to begin with. You are
looking for 1 or more rockers that may have more movement than the
others. With hydraulic lifters there should be very little or no slack (
I'm not sure on the multi-fuel engine ). With solid lifters there will
be a measurable gap between the rocker and valve stem. Check the T/M for
specs. Again, What you will be looking for is a rocker with more slack
than the others. If you find one, follow the adjustment proceedure in
the T/M.
If you are familiar with setting points on the old cars the engine had to
be BUMPED with the starter to get the cam lobe positioned on the contact
rubbing block so the points would be at their widest gap to set them.
Similar proceedure to find a loose rocker.
Frank
On Mon, 16 May 2005 23:32:21 -0700 (PDT) "Mil-Veh Co."
<milveh@sbcglobal.net> writes:
> That should work just long as they are solid lifters
> and if they are solids then in most cases the engine
> must be hot so you get the best reading for proper
> clearances.
>
> PS Cranking on a diesel isn't quite the same as
> cranking on a gas enine, so just be sure the starter
> doesn't get toooooo warm, could do some starter
> damage, not likely, just "could."
>
> --- grntrks@juno.com wrote:
> > 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
> >
> > ===Mil-Veh is a member-supported mailing list===
> > To unsubscribe, send e-mail to:
> > <mil-veh-off@mil-veh.org>
> > To switch to the DIGEST mode, send e-mail to
> > <mil-veh-digest@mil-veh.org>
> > To reach a human, contact <ack@mil-veh.org>
> >
>
> ===Mil-Veh is a member-supported mailing list===
> To unsubscribe, send e-mail to: <mil-veh-off@mil-veh.org>
> To switch to the DIGEST mode, send e-mail to
> <mil-veh-digest@mil-veh.org>
> To reach a human, contact <ack@mil-veh.org>
>
>
Frank Cox - 'Nam 1966
MVPA 14530
'45 GMC 353 DUKW
This archive was generated by hypermail 2.1.4 : Fri Oct 28 2005 - 22:42:52 PDT