Cylinder liner protrusion 955 model 12A traxcavator

Oooo good question ❔ I have two 12A 955's that I need to rebuild.
FYI: The D315 apply to the same Cat s/n changes but the undercarriage changed {as per Old Magnet} "C" to "E" model included a change from D4 size undercarriage to D6 undercarriage at s/n 12A05793.

Oooo good question ❔ I have two 12A 955's that I need to rebuild.
FYI: The D315 apply to the same Cat s/n changes but the undercarriage changed {as per Old Magnet} "C" to "E" model included a change from D4 size undercarriage to D6 undercarriage at s/n 12A05793.

Thank you Dan for the info.

These general rules apply, anything less is asking for trouble!!!!!
 [attachment=72795]Liner-Proj.-3306---D6C.jpg[/attachment]
 

No idea other than what OM just showed. Hopefully the liner might go down a bit more. Just a poor farmer that did not have funds to just call a mechanic. And I was surrounded with some very sharp mechanic that put up with my never ended questions ..................mostly. And most of the bunch are all gone now.

Looking Good - you have come a long way!

I might suggest a metal stop between the cylinder body and the pin to the attachment (buckert arms). Be much better than a 2x4 to support that loaded frame when you are working in and about it. Something that you could easily fabricate and there are many examples from Dump Truck beds to heavy equipment. A requirement in most of todays applications.
You should be able to find examples on local equipment yards, dealers.

cts

If you're thinking of replacing your seat cushions, I recommend Zane Meinberg who took over Hahn Seats. He built for me a seat for a 4R D6 and a Diesel Forty - both exactly to spec. The workmanship is excellent.