John Deere D
Well-known Member
At the end of the Day.......you may be better off with the engine being a Perkins AD3.152 or of some Variation of the AD3.152 as I believe there was a superior rear Crankshaft mechanical oil seal update.......JD: I looked at the sleeves and found some visual damage - most of the engine overhaul kits come with sleeves - so it looks like new sleeves. I also did a price comparison of machining the crank with oversized bearings vs getting a new crank and regular bearings. They are about the same - so I will get a kit with a new crank and bearings in it.
Here is the kicker about the engine: Tractor is a red MF35, engine is yellow - so not the original engine. The serial number of the engine is 152UA39523DSL. This number does not relate to an MF35's engine, I have been hitting walls trying it figure it out. I finally watched a video and found that this engine is probably out of an MF135 (maybe 35x) but I figured it out because the pistons are dished - meaning direct injection. And the serial number lines up with MF135s. Meaning it is an AD3.152. Still not exactly sure what the DSL in the serial number means. I know D=direct, and L=Lip but not sure about the S in the middle.
This is getting a bit more expensive than I wanted - but still cheaper than a new tractor.
Also more Head studs assist in preventing head gasket failures........