[Vwdiesel] Seeking experience or data on Petter stationary diesels

[Shirley, Mark R]

You can use time too.  I read once of a fella that unstuck an old Farmall
by squirting oil into all the cylinders, taking the oil pan off, and jacking
the front of the tractor up.  He then placed a 4x4 post under a crank throw,
and sat the tractor back down on it.  Came back a month later, and the engine 
was free.

> -----Original Message-----
> From: James Hansen [mailto:jhsg at sasktel.net]
> Sent: Tuesday, June 14, 2005 1:48 AM
> To: vwdiesel at vwfans.com
> Subject: RE: [Vwdiesel] Seeking experience or data on Petter 
> stationary
> diesels
> 
> 
> To unstick a stuck piston...
> remove head and injector.  make a dummy injector with a 
> grease nipple on the
> outside.  Ensure valves are good, refinish the valves if 
> necessary... it
> will eventually need to be done anyway, clean out any cooties 
> in the bore,
> fill the bore with cheap grease, leave the valves closed. 
> reinstall head,
> and your injector with the grease nipple. Greaseguns make 
> around 2000psi,
> more in line with what you need to free a stuck piston.  Pump 
> grease until
> the piston is free of the bore.  (oh, you've disconnected the 
> rod already,
> and make sure it CAN come out the bottom.  Some can't with 
> the crank in.
> 
> Soaking with oil is a sure way to have this still sitting 
> around in ten
> years. If a diesel sticks, it's usually from either water 
> getting in, or it
> was a fresh rebuild in a tight bore. You can blow your head 
> off (the skull
> shaped one) by using compressed air to try to unstick it.  Never use
> anything that is compressible on something that is stuck. 
> That's called an
> airgun/bomb. baaaaad.  Use incompressible fluids, grease etc, 
> never air.
> never never never.  If it decides to spew chunks, they fly 
> with a great
> velocity imparted by the energy contained in the compressed 
> gas.  If you use
> grease, oil, etc, and the block completely fractures into 
> tiny bits, the
> energy contained is tiny, and the bits drop to the floor.
> 
> by the way, DO NOT try to force the flywheel.  you will damage the rod
> bearing, it it probably not a bronze bearing, but a babbit 
> bearing, and
> forcing it will squeeze out the good bits.
> -James
> (old engine guy)
> 
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