[AT] Freeing up a Case Diesel

[Gene Dotson]

    Ken;
    I believe I would pull the manifolds rather than the injectors. There 
shoud be a decompression lever on the right side of the instrument panel. 
This will open the exhaust valves enough to get oil into the cylinders. 
Remove the valve covers and make sure the valves operate and are not stuck. 
Can bend push rods if they are stuck. If valves are stuck, back off all the 
adjustments to protect pushrods. Spray some penetrating oil down the valve 
stems to lubricate them.
    The fact that the fan turns when you rock the tractor indicates the 
pistons are not stuck to the sleeves. Should be able to turn the engine with 
the starter and will likely free up quickly with a little oil.
    The transmission and final drives in this tractor are bullet proof and 
not likely to contain any surprises.
    I often wonder why a tractor was parked for so many years, and with a 
collection this size, the tractors were just parked and never started or 
used.
    Hope everything comes out well on this tractor and will make a good 
machine for you.

                        Gene



----- Original Message ----- 
From: "Ken Knierim" <ken.knierim at gmail.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Sunday, March 18, 2007 1:41 PM
Subject: [AT] Freeing up a Case Diesel


> Hi Folks...
> a tractor question for the list... I got my Yuma tractor off the
> trailer yesterday (warm day too, I might add, temps hit 99 degrees
> this week) and I am looking for insight in freeing up a diesel
> rengine.
>
> For example, if it was a gas engine I'd pull the plugs, shoot some oil
> in the cylinders and let it sit for a few days to lube the rings.
>
> The engine was rather set up but I had to lift a wheel up to get it on
> the trailer to bring it home, so I was able to rock the rear wheel
> back and forth and get the fan to rotate somewhat. It's  rather tight;
> thus the concern.
>
> I do plan on pulling the fuel tank off it and cleaning that out; it
> has rust in there and maybe other crud. The filters will get replaced
> and maybe some of the fuel lines; some look rather dry rotted. All the
> oil will get changed and new coolant added, etc.
>
> So do I pull the injectors and put some oil in there? Will I need to
> go back through and replace gaskets to do this? I'm trying to find out
> if this tractor is worth much before I spend a lot on it (dunno what
> the engine, driveline and such look like).
>
> thanks,
>
> Ken in AZ
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