Kingfisher
Well-known member
How much do you think an engine OH cost on one of these? How much head work do they require? Thanks in advance.
1969 JD 4020 diesel
- Thread starter Kingfisher
- Start date
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highgrit
Well-known member
To rebuild it yourself it will cost over 3k in new and rebuilt parts alone.
upfrombottom
Well-known member
If it helps any the average selling price of a 4020 around here is $7500 to $8500 and I don't think they will go down anytime soon.
ALACOWMAN
Well-known member
yep,, im surprized it even needs a overhaul :cowboy:alabama":2oq40c1d said:
novaman
Well-known member
Wow that was a helpful post. Thank youfrankly":23sxdmyr said:
ALACOWMAN
Well-known member
least he didnt say their ugly and stupid,,, so they got one thing going for em anyway...novaman":2mujj8oc said:
agmantoo
Well-known member
Just finished a 4630 for the neighbor. Parts and machine shop work for a major overhaul (engine and head went to engine rebuild machine shop) totaled $4300. New ring gear, new water pump, rebuilt starter, new belts, included. Clevite engine parts. The engine kit was internet sourced and that saved a lot. J Deere dealer quoted "around $12000.
Kingfisher
Well-known member
Thanks for your reply. I'm looking at a pretty nice one but I think it might have a hard time starting in cold weather......not that it gets that cold here but you know what I mean? I think its got some piston to cylinder wear. What did your head work cost? How much are pistons and cylinders? Where do you buy pistons and cylinders? Thanks in advance.agmantoo":16uvw2ib said:
agmantoo
Well-known member
http://www.apmengineparts.com/john-deer ... e-kit.html is where the kit was purchased. The supervisor of the machine shop we used is an old man that has been in the rebuild business his working lifetime, ~ 60 years. He was impressed with the quality of the kit.
Just a suggestion.
On the 4020 cranking. I have only worked on a few of these tractors. From what I have seen J Deere engineers could not make up their minds as to what they wanted to do for the cranking of the 4020 series.If I had a 4020 I would get rid of the slender but long batteries and get two road tractor batteries and mount those batteries elsewhere. I would arrange these 2 batteries in series to create 24 volts for starting and where a 24 voltage late model construction equipment alternator/ regulator would sense both batteries state of charge. ( A 12 volt, two battery setup voltage regulator senses the condition of the best battery) For no more power requirements that a 4020 requires for other needs such as lights just tap the 12 volts off one of the batteries, the one with the chassis ground.
Just a suggestion.
On the 4020 cranking. I have only worked on a few of these tractors. From what I have seen J Deere engineers could not make up their minds as to what they wanted to do for the cranking of the 4020 series.If I had a 4020 I would get rid of the slender but long batteries and get two road tractor batteries and mount those batteries elsewhere. I would arrange these 2 batteries in series to create 24 volts for starting and where a 24 voltage late model construction equipment alternator/ regulator would sense both batteries state of charge. ( A 12 volt, two battery setup voltage regulator senses the condition of the best battery) For no more power requirements that a 4020 requires for other needs such as lights just tap the 12 volts off one of the batteries, the one with the chassis ground.
