Edsfarms

If the fuel line, intake boot and coil/spark plug all check good. Could be a crank seal leaking, Would need to do a case pressure check to verify.

What is the correct battery or batteries to be installed in an IH 674 tractor with Diesel engine? Per my dealer the p/n does not cross to anything

Be VERY cautious charging them. Co worker had an aftermarket drill battery catch on fire in his attached house garage.

https://www.redpowermagazine.com/forums/topic/136963-another-5120-pto-needs-shift-pins/ Here is a link to replace shift pins

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I Post it on YouTube then put a link to the video in a post

X2 👍

The valve is a coil, When you apply 12 V the coil and a ground it creates magnet field actuating a valve in the body that when you remove power the magnetic field is gone and a spring closes the valve. see if a metal blade sticks to the top of the coil when it has 12V and ground applied. FYI you can bypass your switch and wiring with a set of jumper cables directly to the battery. if the valve is staying open without 12V o I’m guessing sticking spool valve or weak spring hope this helps!

🙏 for All involved

@CIHTECH I’m sure yes, just to clarify, too tight. meaning you tapped them in thru shift collar into shift piston slot. But did not jack them up with set screw

What parts did you actually replace? something is not allowing the shift piston to mo

Here is my 710 with combination gauge/tail wheel

Here is a link to my PTO pin replacement. https://www.redpowermagazine.com/forums/topic/136963-another-5120-pto-needs-shift-pins/

Check this thread from previous https://www.redpowermagazine.com/forums/topic/135777-case-ih-5220-pto-problem/

I am thinking the pins are still in the shift collar and hollow tube. They are threaded in the center, you can install a set screw tighten and it will back them out, or take a large drift and knock the hollow shaft thru but you will shear off the pins ( pins that are laying on the bench in pic) and they will need to be replaced with new ones. if you are that far into this project I would look for any play on the reversible 540/1000 shaft and drive tube. Consider replacing everything to prevent another failure/ leak.