420 Crswler & 22A Subsoiler

[ImplementHarry]

Is a 22A subsoiler compatible with the 3-point hitch of a 420 crawler tractor.
If it is, I could use guidance as to how best set up the 3-point hitch to do this.
Measurements I have taken, indicate the 3-point hitch on the crawler tractors do not lift high enough for the point of the subsoiler to clear the ground when the hitch is in the raised position.
My apologies, I do not have the vintage operator's manual for the 22A subsoiler and the newer version of the 22A operators manual currently available on the JD website does not deal with mounting the subsoiler on the JD crawler tractors.

[Lavoy]

Crawler 3PTs are dual position draft arms. When the arms are in the extended position, it will work. It's not coming a foot off the ground, but it works.
Lavoy

[ImplementHarry]

Thank you for the information. I hope all is well.
Harold