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4020 clutch pedal slot adjustment


 
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pat sands
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PostPosted: Wed Dec 09, 2009 6:16 pm    Post subject: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

With a new clutch, does the pedal freeplay adjustment start out in the bottom of the slot or top of the slot? My 4020 is adjusted all the way to the top of the slot, and 2 of the 3 clutch fingers are contacting the TO bearing. I have very little to no clutch (slipping). I think it's time for a new clutch, yes?

Thanks!
Pat
 
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Gerald J.
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PostPosted: Wed Dec 09, 2009 7:54 pm    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

With the bolt at the top of the slot you have minimum clearance. You want 3/4 to 1-1/2" at the pedal of free play. That takes moving the bolt about 3/4" from the end of the slot. If the bolts aren't tight (one in the slot, the other the big nut at the pivot) letting the clutch pedal fly up will slide the clearance away. At least my 4020 did that.

Gerald J.
 
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msb
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PostPosted: Wed Dec 09, 2009 8:19 pm    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

All three finger should touch the throw out bearing at the same time when the pedal is pushed down. As the disk wears the fingers get closer to the TO bearing, so you need to move the adjustment bolt forward to increase the free travel. The free travel should be checked with the throttle pulled down to the first stop or about 2200 engine RPM.
 
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Pat Sands
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PostPosted: Thu Dec 10, 2009 2:54 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

so with the clutch engaged (pedal "up"), none of the fingers should contact the TO bearing, right? How much clearance should there be between the fingers and the TO bearing? I assume this clearance is known as "freeplay".

Thanks again!
Pat
 
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Tx Jim
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PostPosted: Thu Dec 10, 2009 4:15 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

msb wrote:
(quoted from post at 00:19:49 12/10/09) . As the disk wears the fingers get closer to the TO bearing, so you need to move the adjustment bolt forward to increase the free travel.


msb
It's been a long time since I adjusted a clutch pedal on a 4020 but I was thinking one moved the bolt towards rear of slot to give more free travel.
 
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msb
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PostPosted: Thu Dec 10, 2009 6:36 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

You are right, Jim. Not my first mistake today.lol.
 
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DONMYEIL
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PostPosted: Thu Dec 10, 2009 7:11 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

A new clutch starts at the bottom of the slot.When it gets to the top its shot.
 
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sandman460
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PostPosted: Thu Dec 10, 2009 10:11 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

Can I adjust the fingers to move them away from the TO bearing to "buy" me a little more time? Seems to me that because there are 2 fingers contacting the TO bearing, they are keeping the clutch from fully engaging. One finger is maybe an 1/8 of an inch away.

Thoughts?
Thanks for the help,
Pat
 


Last edited by sandman460 on Thu Dec 10, 2009 10:12 am; edited 1 time in total
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tim s
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PostPosted: Thu Dec 10, 2009 10:53 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

Yes, you can move your adjustment to about half way in the slot and lock the pedal in a manor that will hold it in place and adjust the fingers out to where they are even,or touching the bearing,they may have been adjusted wrong from the start...
 
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belaw
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PostPosted: Thu Feb 28, 2013 8:26 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

Tx Jim wrote:
(quoted from post at 05:15:04 12/10/09)
msb wrote:
(quoted from post at 00:19:49 12/10/09) . As the disk wears the fingers get closer to the TO bearing, so you need to move the adjustment bolt forward to increase the free travel.


msb
It's been a long time since I adjusted a clutch pedal on a 4020 but I was thinking one moved the bolt towards rear of slot to give more free travel.


Sorry for dragging up an old thread, but I didn't see any point in starting a new one. I just purchased a '68 4020 that has almost no freeplay. Right now the adjusting bolt is about 2/3 of the way down the slot.

To gain more freeplay do I move the bolt to the bottom of the slot or the top? To ask the same question another way, do I have 1/3 or 2/3 of my adjustment range left?

FWIW the seller says that there's about 1,500 hours on the clutch.
 


Last edited by belaw on Thu Feb 28, 2013 8:28 am; edited 1 time in total
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Tx Jim
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PostPosted: Thu Feb 28, 2013 9:20 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote


To gain more pedal free play move bolt in the slot towards the rear of tractor
 
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belaw
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PostPosted: Thu Feb 28, 2013 11:23 am    Post subject: Re: 4020 clutch pedal slot adjustment Reply to specific post Reply with quote

Tx Jim wrote:
(quoted from post at 10:20:16 02/28/13)
To gain more pedal free play move bolt in the slot towards the rear of tractor


Great, looks like I have over half of my adjustment range left.
 
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