Manual front PTO

[Steve watley]

First I need someone to explain how the pto engages the belts. My 169 seemed to almost stop the blades in a little deeper grass. Today I see the pto is what's not turning. Now today when I went back a few hour later the pto will not engage at all. Not sure where to start. I hope it something simple. I just got done getting all new belts on the deck, figured out and rebuild the Mule drive. Now the pto quit. Please help me understand how this device works.

 

[digger]

First I need someone to explain how the pto engages the belts. My 169 seemed to almost stop the blades in a little deeper grass. Today I see the pto is what's not turning. Now today when I went back a few hour later the pto will not engage at all. Not sure where to start. I hope it something simple. I just got done getting all new belts on the deck, figured out and rebuild the Mule drive. Now the pto quit. Please help me understand how this device works.

http://cubfaq.com/mechanical_pto.html

 

[Steve watley]

So I can say for sure pto clutch tension on the plates has to be my problem. I can turn pto pulley when pto is engaged and engine off. I tried to turn the three spring screw but they just spin as there is nuts on inside. Is it normal to be able to turn those screws even with my fingers? I assume you guys call the triangle plate the spring. I have a nice Dealer parts manual that came with my tractor. So in see all the parts and there names. Any help would be great. Am I correct is say there is no pressure/spring tension adjustment once the assembly is installed on the bearing. One more question, what size set screw or allen socket to take the screws out. 1/8 is too loose. Metric did not fit at all.

 

[digger]

So I can say for sure pto clutch tension on the plates has to be my problem. I can turn pto pulley when pto is engaged and engine off. I tried to turn the three spring screw but they just spin as there is nuts on inside. Is it normal to be able to turn those screws even with my fingers? I assume you guys call the triangle plate the spring. I have a nice Dealer parts manual that came with my tractor. So in see all the parts and there names. Any help would be great. Am I correct is say there is no pressure/spring tension adjustment once the assembly is installed on the bearing. One more question, what size set screw or allen socket to take the screws out. 1/8 is too loose. Metric did not fit at all.

Post a pic of the PTO. The setscrews are 1/4-20. Please read the link I posted and it answers most all your questions.

 

[Steve watley]

Post a pic of the PTO. The setscrews are 1/4-20. Please read the link I posted and it answers most all your questions.

 

[Steve watley]

1/4x20 should take a 1/8 allen socket then. I hope he not strip it.

 

[Steve watley]

Three views.
I did read through a few of the post on your link. The first one seems to be my problem as well. I not sure if you watch any you tube video, but some posted the disassemble of the pto on a 149. He also has others with a custom wood enclosure for when he use the snow blower. I also have the snow thrower in great condition but have not tried it yet.

 

[digger]

1/4x20 should take a 1/8 allen socket then. I hope he not strip it.

That PTO is so far out of adjustment, it will never work. Time to pull it, check for worn parts and put it back together right. You'll need the adjusting tool to do that.

 

[dschwandt]

Those 3 screws are double nutted on the back side.
You are gonna have to pull the PTO to fix it correctly.

 

[hydroharry]

And don't overlook there are 6 set screws. 2 in each hole (one backs up the other).

 

[bwstevens]

I sometimes grind a torx bit very sharp and tap it in a stripped or broken allen head.

 

[dsarow]

A stripped set screw if it happens, left hand drills

 

[Steve watley]

http://cubfaq.com/mechanical_pto.html

I just noticed the cub Fact link. I read it last night I thought the reply was the few past post.
Just still learning this site.

 

[Steve watley]

Ok I got the pto off and it was not so hard. I the past owner has had it off too. I do not see the bearing come off too easy and it just seems to need s ok me oil for lube. Please tell me if this is a mistake. Mine had two spring plates past owner put upside down the dome of springs was face inside. And the clutch disk is cracked. The last pic something in middle is cracked. Not sure what it is. I think I might just try Ccss rebuilt pto with the two plates as he described. And send this back to him.

 

[dschwandt]

That's the snap ring that the bearing bottoms on.
No need to mess w/that at all.
The bearing is a sealed unit and once installd is locked in place by driving the eccentric collar counter clockwise.

 

[mfrade]

I think I might just try Ccss rebuilt pto with the two plates as he described. And send this back to him.

I did that the last one I was working on. They do a great job on them and it really speeds things up.

 

[Steve watley]

I have an order inn with CC specialties for the rebuilt pto with brake. Does anyone know if that comes with the 3 finger brake disk that is held on with the snap ring. Mine seemed loose around the snap ring and spring washer. Not sure if that is a problem. The mower should be working pretty good once I get this part.

 

[Steve watley]

Today I got my nice rebuilt PTO from Charlie at cc specialties. The man is very busy but hive him a chance, you will get your part. I pretty for install by coating the allen lock screws with copper anti-seize. And the surface where it will meet the bearing.
Hope this helps if it ever has to be removed. I have seen lots of post about adjustment when people try to rebuild there own. I wonder if some the problem can ever be from depressing the plates too far with the engage lever?

 

[Steve watley]

All done and for the first time since I purchased this tractor. The Hydro, system the cutting deck. And the Mule drive work perfectly. Thanks Charlie for help me out figuring correct adjustment. And mostly for this pto. All I had to do was depressthe springs and line up the clutch disk squares.

 

[rfunk]

All done and for the first time since I purchased this tractor. The Hydro, system the cutting deck. And the Mule drive work perfectly. Thanks Charlie for help me out figuring correct adjustment. And mostly for this pto. All I had to do was depressthe springs and line up the clutch disk squares.

I'm a big fan of the antisieze compound, too. I also either use a new Allen wrench, or carefully grind off the worn part, not letting it get hot. I've thought about looking for some torx- style setscrews. They would be much more resistant to wear on both the wrench and the setscrews.