3-Point Hitch Ford 641 hydraulic pump bleed plug allen head size

[sjones31060]

Need to bleed my hydraulic pump. Can someone tell me the allen head size I will need so I can purchase one? Thanks in advance for any help you can give me.

 

[Ford850]

It takes a takes a 5/16" hex wrench (Allen wrench).

 

[sjones31060]

Thank you, Ford850