Re: 4020 rebuild
[ View Follow Ups ] [ Post Followup ] [ Return to Tractor Talk ]
Posted by Ed on July 02, 1998 at 09:28:07:
In Reply to: 4020 rebuild posted by Chad on July 01, 1998 at 17:30:36:
*** Could Be Big *** I'm not a JD expert but know a little about tractors mostly IH Case & Ford. The best advice I can give is to become educated on how to repair your tractor (you've started the first step here). I would suggest that you buy the shop manuals for this tractor (a good investment since you will need them to replace the bearing - torque settings, measurements and clearences plus how to instructions) and read up on rebuilding the tractor and replacing the clutch. Next (I'll bet you have already done this) drop the oil pan and remove the connecting rod bearing caps (keep them in order so when you reassemble the cap from cylinder one goes back to cylinder one). Look at the crankshaft journals they should be free from groves except for the one (or more) with the spun bearings. Then * one at a time * remove, inspect and replace the main bearing caps and journals. If any of the journals have groves (Your Service Manual will help you with this) the crankshaft will have to come out. A N D T H A T M E A N S - a lot of work
You will most likely be splitting the tractor in two to remove the clutch and flywheel and then rebuilding the engine. My advice at this point is to take a careful inventory of the tractor and if you have the money - now's the time to replace a number of items if needed like the clutch since the tractor will already be apart. Last year I rebuilt a IH 686 D (one of the cylender sleeves had a leak)
and the parts alone (sleeves, pistons, bearings, gaskets) ran just under $2,000. The head and all other parts were in good shape and were not rebuit. Good luck Ed : Does anyone know how big a job it is to rebuild a JD 4020 Diesel?
: It has a spun bearing and I would like to do the work myself if it
: is possible. Thank you for any help.
Follow Ups:
Post a Followup
| 
