My John Deere 4600 tractor (2000) equipped wit a Yanmar 4TNE84 engine threw a connecting rod. I ordered a 4TNE84 short block to swap out. During the engine disassembly I find something very interesting that I cant seem to get an answer on.
The original engine has a crankshaft balancing unit that sits above the oil pan, driven by a gear on the crankshaft. The short block I bought doesnt have this gear on the crankshaft. It appears the oil passages are modified as well.
Did Yanmar change to a harmonic external balancer?
Can I still use this short block without the internal balancer?
has anyone seen this?
Thank you, Dan
The original engine has a crankshaft balancing unit that sits above the oil pan, driven by a gear on the crankshaft. The short block I bought doesnt have this gear on the crankshaft. It appears the oil passages are modified as well.
Did Yanmar change to a harmonic external balancer?
Can I still use this short block without the internal balancer?
has anyone seen this?
Thank you, Dan