Farm Equipment - 190 pto coupler

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190 pto coupler

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=142249
Printed Date: 28 Dec 2025 at 11:43am
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Topic: 190 pto coupler

Posted By: mattster316
Subject: 190 pto coupler
Date Posted: 07 Sep 2017 at 5:16pm

I recently acquired a 1967 AC 190. The owner told me the pto did not work. I took the power director off the side and looked inside to find the pto coupler laying in the bottom. How do install this back on the front shaft and get the selector fork back in the groove. This is the manual pto with the engagement lever to the left of the seat.

Replies:

Posted By: MACK
Date Posted: 07 Sep 2017 at 9:20pm

Drop the PTO box down and forward after pulling the two dowels. Get your wife out there with her small hand. With lever in disengaged potion, she can hold coupler in place while you slide box into coupler and on in. WARNING!!!!!!!!! DON'T MASH HER FINGERS. MACK

Posted By: mattster316
Date Posted: 08 Sep 2017 at 6:49am

Can the pto gear box be completely removed in this mannor? The pins you are referring to are they the alignment pins on the cover? Thanks for the help

Posted By: Joe(TX)
Date Posted: 08 Sep 2017 at 7:12am

The dowel (alignment) pins have a tapped hole to allow pulling them. The box will them slide forward after removing the bolts.

I think it would work better to put the coupler in the engaged position. This way the PTO shaft will hold the coupler. The reason it fell out in the first place is that someone removed the PTO box with the coupler disengaged.

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1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A

Posted By: mattster316
Date Posted: 08 Sep 2017 at 6:19pm

Thanks for all the help. Got it all back together very easily. Now to get fluids tomorrow.