Hi forum, recently purchased a Cat D7 17a dozer with a ripper attachment which I was told was a 17a. I went and had a good look over it a couple of days ago where I have to pick it up from. The engine number is a 3T number and the engine looked identical to the D8800 engine I am rebuilding for my D7 3T. I could not read the chassis number as the ripper winch is mounted over it. Is the engine still a D8800 3T engine in the 17a although it is a higher horsepower engine. The pony engine is seized and I am trying to get parts together for a starter conversion to electric to get it going to move it. I will upload some photos soon.
On the left hand side of the main motor , just above the crankcase there is a flat spot with the engine number etched into the casting on the left side . Could be another tag towards the rear of the block , again on the left side . Is this a cable blade ? 339 motor number rings a bell .
Yes, this is a cable blade. Where you were talking about is a aluminium tag about 3'' x 2'' joined to the block denoting a number 3T?????. Next time I visit the area I will look for this number etched into the casting in the same area and also upload some photos.
Same displacement engine used in the 3T and 17A. The D8800 has exposed push rod tubes. The D339 has the valve push rods enclosed in the block.