JD 820 3 cyl diesel fuel problem

[Tx Jim]

If battery ground cable is still attached to battery box that attached to clutch housing THEN I suggest to acquire a negative ground cable long enough to reach engine block. This method should supply more amps to starter solenoid. Please explain your method for utilizing Ford type solenoid. Are you intending to install it as a relay on solenoid exciter wire similar to photo below of kit JD offers?

 

[fullchoke]

I was going to try adding the ford type solenoid so that when power went to the solenoid on the starter, it also went to the add on solenoid which would send the power to the starter. I would have the exciter wire go to each solenoid. I was not certain it would power each, and if not I would switch on a separate power line to the add on solenoid, so in effect I would have to push 2 buttons. Luckily I didn't have to do this, instead I hooked up a 50 amp charger to the battery to see if that would do the trick, and it did. The battery is brand new, so it wasn't the battery.

My next question how do I rotate this tractor engine by hand? Since it is determined the injection pump is bad, I should time it before I remove it. thepumpguysc was very helpful in telling me how to do this, but turning the engine with the crank bolt isn't possible with the hydraulic pump covering it. I could bump the starter, but don't think I can get it to stop exactly right. I'm going to go stare at it some more. I don't want to dismantle the front of the tractor to get at that crank bolt unless there is no other way.

Thanks

 

[Tx Jim]

JD 300 series engines such as your 820 can be rotated with a special engine rotating tool that one inserts in hole flywheel housing on LH side that covered by a small plate or by turning fan while pushing on fan belt to increase belt tension.

I was not certain it would power each, and if not I would switch on a separate power line to the add on solenoid, so in effect I would have to push 2 buttons.

I think your idea of adding extra solenoid with 2 switches would be very inconvenient. I suggest to follow JD engineers idea in photo I previously posted that I will post again. If you enlarge photo & inspect closely one can follow wire routing!!!!!

 

[Zebrafive]

Would it be possible to rotate the engine via the PTO shaft?
That's if it does NOT have the independent PTO with hydraulic clutch pack.

 

[Tinhack]

820 can be rotated with a special engine rotating tool that one inserts in hole flywheel housing on LH side that covered by a small plate or by turning fan while pushing on fan belt to increase belt tension.

That "special tool" can be a large screwdriver or pry bar.

Won't the front cover have to be removed to get the injector pump off? IDK. If so, you'll most likely have to remove the hydraulic pump too.

 

[Tx Jim]

That "special tool" can be a large screwdriver or pry bar.

Won't the front cover have to be removed to get the injector pump off? IDK. If so, you'll most likely have to remove the hydraulic pump too.

I've never attempted to turn flywheel with a pry bar on a JD 300 series engine. Have you attempted this feat? To R&R inj pump one needs to remove cover(item 11)

 

[fullchoke]

I tried to time the IP before I removed it, but it didn't move in the timing window. I then thought something was broken inside, so I took off the 2 nuts holding it on, and pulled the IP off the shaft. Not seeing how that shaft connected to the pump, I watched a You Tube video on R&R and discovered the driveshaft is broken. Now I need a new driveshaft, and have possibly more damage in the pump. I've got to get the broken driveshaft out...somehow. I also had a lot of diesel fuel in the engine oil when I changed it, so I could have a major problem in there too. The way things are going I probably should expect that. The engine sounds fine cranking it, but I wouldn't expect to hear a knock until it fires. Right now I don't know the condition of the lower end. My son thinks I should bail on this tractor before I buy an IP and find the engine is bad too. What would you do?

 

[Tx Jim]

Due to fact you purchased this tractor at auction & don't know the condition of engine your son could be correct. Head & rotor in IP are probably seized causing shaft to break. Are you mechanically inclined?

 

[fullchoke]

I'm mechanically inclined, but not a mechanic. I know my son could be correct, and definitely is correct if the bottom end is knocking. I have thought about pulling the pan and checking it. I think I could tell if one was loose. Thinking that it should be done now that the IP is in such bad shape. The cost to replace the IP is now going to be especially steep, since that driveshaft is broke. I shouldn't spend that kind of money on an engine that needs a rebuild, I should know what I'm up against. Plus the steering is especially sloppy, so money needs to be spent there too. It has power steering and was worked hard with the loader and no maintenance.

 

[Tx Jim]

I think you have an excellent idea to check the condition of rod/main brgs.