jd 820 new pump

[Tx Jim]

I've never seen the Y timing tool required just to R&R inj pump on a JD 300 series engine. Utilizing Y timing tool requires removal of frt timing gear cover.

 

[veto56]

wow! we have never heared of this Y tool.we,ve always just put #1 up put pin in put on pump and it srarted up.thanks for that info we will look at this.

 

[veto56]

OK we pulled off pump and shaft to flywheel broke.have never seen this before.How a shaft going into injector pump could break like that unless pump key wasn"t in.Sending pump out to be checked,hope we didn"t damage pump.Myself thinks my friend din"t put the pump on correctly ,turning motor over caused the key to fall in keyway in pump.and the sudden jerk ,broke the shaft.But thats my thinking.

 

[Tx Jim]

Broken inj pump shaft usually indicates seized head & rotor in inj pump.

 

[veto56]

Found out the hard why what happened.All three injectors were clogged causing high pressure in pump.Which in-turn locked-up pump,breaking shaft.Well learned the the hard why,but learned.So seent out pump again and new injectors.And found pump shaft,looks like that will be fun changing.But we went thru tractor everything else looks good.So thaks every one for the help will let y"ll know out come soon.Just won"t be able to bush hog down near the creek.

 

[veto56]

The only bad thing, with Jd is they change designs.in the same year or run.the 820 3 cylinder. Has 4 6 volt battery.but it's a 12volt system.changing over to one 12th battery.changed generator'"to alternator. Changed regulator.is there anything else?? To make this charge.? Ty for Ur help.

 

[Tx Jim]

Four 6 volt batteries were on a 2 cyl 820 not 3 cyl 820.

 

[beenthere]

I was confused too when 3 cyl was mentioned. But there is a Utility Deere 820 with 3 cyl.
Besides google showing links, here is a TBN link as well. They are not the big heavy 820 2-cyl tractors of the 50's.

http://www.tractorbynet.com/forums/john-deere-ag-tractors/254548-john-deere-820-3-cylinder.html

I for sure would not be trying to start such a small diesel with ether. May be the problem that things are found broken and out of time. But that may just be me.

 

[jenkinsph]

I was confused too when 3 cyl was mentioned. But there is a Utility Deere 820 with 3 cyl.
Besides google showing links, here is a TBN link as well. They are not the big heavy 820 2-cyl tractors of the 50's.

http://www.tractorbynet.com/forums/john-deere-ag-tractors/254548-john-deere-820-3-cylinder.html

I for sure would not be trying to start such a small diesel with ether. May be the problem that things are found broken and out of time. But that may just be me.

The 820 3 cylinder model has an ether injector attachment built into the console on the right side so I suspect that using ether was okay by Deere.

 

[beenthere]

Then that should be okay if someone doesn't over do it. Seems if the ether ignites when the timing is off, then some keyways may get stripped.