rock2610D
Silver Member
Just got my John Deere manual for my YM2610D. Manual is for an 850 JD and it is GREATTT!!!
Here is the process it describes for my tractor.
1)Shut off fuel and disconnect #1 injector line from pump
2)Unscrew delivery valve holder from pump and remove spring and delivery valve
3)Reinstall holder and copper washer
4)Attach a fabracated line onto pump #1 injector outlet
5)Place a ratchet and socket onto crankshaft nut
6) rotate ratchet clockwise until #1 cylinder approches TDC on compression stroke
7)Place small container under fabracated hose and turn on fuel
Comments
Since delivery valve was removed a steady stream of fuel will come out until crankshaft reaches a certain point. At which fuel will slow and eventually stop. Disreguard the last drop or 2.
The point at which fuel stops flowing is called the beginning of the injection cycle.
Once fuel stops completely check injector timing mark. (its the one about 24 degrees BTDC which has a #1 stamped on it) It should be alligned with the pointer.
If mark has gone past pointer remove shims, if it has not reached pointer add shimms. .1mm shim is about 1 degree
I was doing this ALLL WRONG!!!!!
Hope this helps someone.
Forgot to mention that you can also use the some kind of tool hooked to delivery valve holder, but that seem a little harder to do so I did not include it.
Here is the process it describes for my tractor.
1)Shut off fuel and disconnect #1 injector line from pump
2)Unscrew delivery valve holder from pump and remove spring and delivery valve
3)Reinstall holder and copper washer
4)Attach a fabracated line onto pump #1 injector outlet
5)Place a ratchet and socket onto crankshaft nut
6) rotate ratchet clockwise until #1 cylinder approches TDC on compression stroke
7)Place small container under fabracated hose and turn on fuel
Comments
Since delivery valve was removed a steady stream of fuel will come out until crankshaft reaches a certain point. At which fuel will slow and eventually stop. Disreguard the last drop or 2.
The point at which fuel stops flowing is called the beginning of the injection cycle.
Once fuel stops completely check injector timing mark. (its the one about 24 degrees BTDC which has a #1 stamped on it) It should be alligned with the pointer.
If mark has gone past pointer remove shims, if it has not reached pointer add shimms. .1mm shim is about 1 degree
I was doing this ALLL WRONG!!!!!
Hope this helps someone.
Forgot to mention that you can also use the some kind of tool hooked to delivery valve holder, but that seem a little harder to do so I did not include it.
