Transport lock on JD 1240 Planter

[OUBrew]

Is there a transport lock pin on this planter? I don't have a manual and want to get my plots planted asap. I connected the hydraulic cylinder but the planter will not drop. My guess is there is a locked transport setting? Any help would be appreciated.

 

[OUBrew]

View attachment JD Lock Pin?.pdf

 

[OUBrew]

Here is a close up of the hydraulic cylinder connection...what am I missing?? ThanksView attachment JD 2.pdf