414-8 trunnion adjustment

[David414 289]

My 1st time replacing the clutch plate on a 414-8. My question is the proper adjustment for the trunnion in relation to the clutch housing. The bearings in the clutch housing are good and lubricated. New clutch plate. Housing clutch surface, both sides are clean, no grease.

Question: How do you determine the proper tension on the trunnion to engage the PTO? What should I look for? I remember before that when the PTO was engaged, the engine would make a much different sound, a deeper sound to the engine whenever the PTO was engaged,  and when the PTO was disengaged, it sounded like the engine was more relaxed?

After I replaced the clutch plate, it no longer makes this engine noise. I adjusted the trunnion to where the mower deck works, and the belts, mule drive,  and deck are in good working order. I don't know if I have to much or to little tension on the trunnion? How important is that change in engine noise when the PTO is engaged? Are there visuals to observe when the PTO is engaged or not engaged? I appreciate your help!

Thanks.

[dcrage 630]

I believe there is guidance in the attachment manuals. For example the manual for my 37” SD deck says something like “the trunnion is tight enough when you get 1/2”(?) deflection on the belt going to your mule drive.”

[David414 289]

Thanks for the reply, but the question is not the mower belt tension from the mule drive. That is adjusted to the manual as you stated.

My question is on the engagement of the PTO clutch, how much pressure it should have?

[cleat 7,257]

My understanding is tight enough so the clutch does not slip or pop off on it's own but not so tight as to cause a lot of stress on the machine.

 

PTO should engage with light moderate effort but you should not have to push hard.

 

The entire dash should not flex when engaging the pto, if so it is too tight.

 

I don't have mine set too tight at all.

 

[David414 289]

Cleat,

 

Thanks for the info.  After seeing your 520 collection, I have tractor envy! Very nice collection.

Question for you, The roto tiller you have for your 520, will it fit a 414-8? And are the mounting attachments (arms, links, carriage etc) for the tiller to the tractor still available? Does it take a special mule drive?  Will the mule drive for a mower deck work? I have an eye on a tiller but it has no attachment mechanicals to the tractor. Thanks

[lynnmor 7,817]

For a tiller you will need the hitch, bracket, belt and spring on this page.

 

You will also need the $178 rock shaft kit on this page.

Edited April 29, 2020 by lynnmor

[David414 289]

Lynnmor,

Thanks for the info on the tiller. Seller states the tiller is a 7 1251, a 36" rear mount with a "hitch yoke about 6" inside". Will this model fit the 414-8 and do I need anything else to attach  the tiller to the 414-8?

[cleat 7,257]

The bracket as named on the previous post is what is used as a mule drive.

 

It basically mounts under the engine in the mid Tach-a-matic as opposed to the front tach used for the mower deck.

 

It is a totally different beast and is required.

 

You need the rear attachment that bolts to the rear axle as well as the rear lift.

 

That is the problem with tillers, you get the tiller itself for a good price but you need a bunch of other stuff to make it work.

 

Here is the tiller manuals to give you an idea of how everything works together.

 

 

1996-2001 Tiller 36in OM.pdf

 

3315-210 1992 Tiller 36in IPL.pdf

 

3316-968 1995-97 Tiller 36in Installation.pdf

 

Here is a pic of mine installed.

 

 

Cleat

[David414 289]

 Thank you for the info!

[lynnmor 7,817]

The rock shaft kit I referred to above is for the automatic transmission, you need the one for manual.

 

Your 414-8 would be better than a hydro since gear drives keep a steady forward pace.

 

I've not used the older model tiller that you have in mind, so maybe someone can give you better information for use with your tractor.

 

Manual  for that tiller.