Mustang67ford 234 #1 Posted March 5, 2022 Got a new spring as mine didn't have one. I know a cotter pin goes in the pto shaft. Once I got a pic as to where the other side of the spring went (top hole of the side guard bracket), I went at it. Spent hours trying to get it to work and still don't think I have it right. The sprimn appeared to have so much tension, the slightest bump of the pto handle and it would come flying back. Found the best setup, though by no means good, was to have some slack in the cotter pin, about 3/8. The spring would then pull the cotter pin into position. I also tried with the trunnion on top of the bracket at the pto and with it under the bracket. With the spring, found it to work best with the trunnion under the bracket. Anybody have similar experiences? Share this post Link to post Share on other sites
Handy Don 14,124 #2 Posted March 5, 2022 It sounds like you might have an issue at the OTHER end. The bracket that pulls the "bow" inward should carry the actuating rod past full engagement so that the spring is pulling on the other side of the pivot to keep it engaged. Hard to explain, but I'm hoping someone can supply a closeup picture of the angle. 3 Share this post Link to post Share on other sites
Mustang67ford 234 #3 Posted March 6, 2022 11 hours ago, Handy Don said: It sounds like you might have an issue at the OTHER end. The bracket that pulls the "bow" inward should carry the actuating rod past full engagement so that the spring is pulling on the other side of the pivot to keep it engaged. Hard to explain, but I'm hoping someone can supply a closeup picture of the angle. The rod seems to go the whole ways, up and over the hump per say. 1 Share this post Link to post Share on other sites
JCM 10,247 #4 Posted March 6, 2022 May need some pictures of your set up to clarify. Share this post Link to post Share on other sites
peter lena 9,299 #5 Posted March 6, 2022 @Mustang67ford , notice the stack of washers in the middle of picture ? thats on the battery ground rail that holds the pto lever start point . if you firm up the lever start point , it works much better , also note the heim joint UNDER the lever mount point , notice the ground cable going to corner of engine to frame ? that bolts to the same ground rail that the battery grounds to . you can also tye that added ground to your , ignition rectifier , on engine tin , and from there to your headlights . notice the battery tender plug in point ? next to clutch pedal ?. that dash area is a major area for improvement , once i did this , added it to my other 2 horses , good luck with it . once you do it , you will be a convert , pete Share this post Link to post Share on other sites
Handy Don 14,124 #6 Posted March 6, 2022 (edited) 4 hours ago, Mustang67ford said: The rod seems to go the whole ways, up and over the hump per say. So we are on the same page as we try to describe this! On my two tractors with this kind of PTO, the spring aligns in a way that once that actuator is "over the hump" the spring is helping keep the PTO engaged. If on your tractor it is still trying to disengage the PTO, then I suspect something is still out of adjustment. Peter's fixes snug up the action at the lever end nicely, but are not related to the action at the other end except that it can slightly re-align the spring. Edited March 6, 2022 by Handy Don Share this post Link to post Share on other sites
Mustang67ford 234 #7 Posted March 6, 2022 3 hours ago, JCM said: May need some pictures of your set up to clarify. Here are some pics, both with and without pto engaged Share this post Link to post Share on other sites
Mustang67ford 234 #8 Posted March 6, 2022 One more... Share this post Link to post Share on other sites
Handy Don 14,124 #9 Posted March 6, 2022 Firstly, that is an impressively clean and tidy tractor! The PTO end looks correctly set up so I think you are right that the issue is at the lever end. I'd probably resort to trial and error. I'd pull the pin on the trunnion at the PTO end of the actuator rod and move it several turns further onto the actuator rod and re-install it--in other words "shorten" the rod's effective length to make the lever end move a bit further to engage the PTO. I'd hope that the extra rotation of the lever will move it a bit further past the "over the hump" position and let it stay put when the PTO is engaged. 1 Share this post Link to post Share on other sites
Mustang67ford 234 #10 Posted March 6, 2022 49 minutes ago, Handy Don said: Firstly, that is an impressively clean and tidy tractor! The PTO end looks correctly set up so I think you are right that the issue is at the lever end. I'd probably resort to trial and error. I'd pull the pin on the trunnion at the PTO end of the actuator rod and move it several turns further onto the actuator rod and re-install it--in other words "shorten" the rod's effective length to make the lever end move a bit further to engage the PTO. I'd hope that the extra rotation of the lever will move it a bit further past the "over the hump" position and let it stay put when the PTO is engaged. Thanks, been restoring it since the fall. Close to being done. I am over the hump. The rod does bottom out on the upper part of the handle when engaged. 1 Share this post Link to post Share on other sites
Ed Kennell 42,112 #11 Posted March 6, 2022 I think that spring end needs to be lowered so it is pulling forward not up. Is there a hole in that bracket with the unused wiring harness ? You may not even need the spring. My 520 and 312 do not have a spring and they work fine. My 417 has a spring, but it is horizontal and pulling forward. Here is the 417. 2 Share this post Link to post Share on other sites
peter lena 9,299 #12 Posted March 6, 2022 @Mustang67ford agree with don on the cleanliness of your unit , also see with your nice behind dash shot that my added washers are not needed on your set up , also ed has another type of set up , glad you found the sweet spot on that spring pull / pull point . once you find it , its easy to maintain . found so many issues on my set ups in that dash area , just had to correct anything i found . thanks for the pictures the feed back and staying with it , pete Share this post Link to post Share on other sites
oldlineman 1,541 #13 Posted March 6, 2022 Here are pictures of my 1989 414-8 and I think Ed is onto something, the spring should be as seen in my pictures almost horizontal and mine actually becomes more horizontal when the PTO is engaged . Make sure the busching on the PTO handle is there and in good condition. Bob 1 Share this post Link to post Share on other sites
Mustang67ford 234 #14 Posted March 6, 2022 5 hours ago, Ed Kennell said: I think that spring end needs to be lowered so it is pulling forward not up. Is there a hole in that bracket with the unused wiring harness ? You may not even need the spring. My 520 and 312 do not have a spring and they work fine. My 417 has a spring, but it is horizontal and pulling forward. Here is the 417. Mine is in the same hole as yours. If i put in bottom hole of bracket, its worse. Don't see a way to lower it on the rod itself. Share this post Link to post Share on other sites
