Rotating engine

[OregonAaron]

First off, I know I can figure this out but I know you pros probably have a quicker easier solution. I need to rotate my engine by hand in order to line up injection pump timing marks. Soooo, since there is a coupling on the crank shaft for the hydraulic pump what is the best way to rotate it? Worst case I remove the coupling and put a wrench on the crankshaft nut. However I'm sure you guys may have a better quicker solution. Removing the coupling isn't a huge deal but I'd rather not waste a bunch of time since it has been darn cold out! Oh yeah, the tractor is a 1520.

 

[John Deere D]

Is it possible to engage PTO shaft.
Then rotate PTO Shaft?
I have no experience with a 1520....

 

[dleefarms]

You can pop the inspection cover off the bell housing and access the flywheel. Using a crowbar you can rotate the engine
with the flywheel.

 

[Jim.ME]

I normally pop the cover and use a large screwdriver on the flywheel/pressure plate. And you are located right where you need to be to put the timing pin in, if you need. Be sure you turn the engine the same way it rotates when running so the slack is out of the gears in the proper direction.

 

[fdt860]

If you have radiator out, a pipe wrench on the pump drive is the easiest by far.

 

[Dieseltech]

The timing pin bolt holds the tin cover over the area where a screwdriver can be used to turn engine with the ring gear. The timing pin is reversed, placed it it's hole
to locate TDC when the pin end enters the flywheel drilled hole while turning engine.

 

[OregonAaron]

I was able to carefully rotate it thru the inspection hole that you use to grease the throw out bearing.