40c clutch free play

General help and support for your Lindeman through 2010 John Deere crawler
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tldec50
40C crawler
40C crawler
Posts: 12
Joined: Fri Aug 18, 2017 6:35 am
Location: Rex Ga

40c clutch free play

Post by tldec50 » Thu Aug 09, 2018 10:57 am

Free play adjustment bottomed out,gears grind trying to shift but clutch does not slip,what is worn out?throw out bearing or pressure plate fingers or should I replace everything when I pull the engine.anything else in there that wears out.any help much appreciated,thanxTim

dtoots1
2010 crawler
2010 crawler
Posts: 536
Joined: Fri Nov 30, 2012 8:54 am
Location: akron, ohio

Re: 40c clutch free play

Post by dtoots1 » Thu Aug 09, 2018 11:59 am

have you checked linkage worn pins etc?

tldec50
40C crawler
40C crawler
Posts: 12
Joined: Fri Aug 18, 2017 6:35 am
Location: Rex Ga

Re: 40c clutch free play

Post by tldec50 » Thu Aug 09, 2018 1:07 pm

Pin or bolt on pedal at cross shaft is ok will pull engine next week and see what is going on something inside torque tube at the yoke I am guessing,maybe the clip on the throwout yoke has come off at free play eccentric bolt ,also maybe change throw out bearing while I am in there. thanx for the help,Tim

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Stan Disbrow
350 crawler
350 crawler
Posts: 2548
Joined: Fri Jul 15, 2005 3:13 pm
Location: Raleigh, NC

Re: 40c clutch free play

Post by Stan Disbrow » Thu Aug 09, 2018 2:03 pm

Hi,

Don't forget the pilot shaft bushing. That might be dragging. if it does, then the gears grind with the clutch pedal depressed. It won't transmit enough power with the clutch depressed to move the machine. Unless it galls up, that is. Then, it usually doesn't move the machine for long until the pilot end of the trans input shaft snaps off....

Stan
There's No Such Thing As A Cheap Crawler!

Have: '58 JD 420c 5-roller w/62 inside manual blade
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original possum
440 crawler
440 crawler
Posts: 136
Joined: Wed Sep 11, 2013 3:34 pm
Location: Shiner, texas

Re: 40c clutch free play

Post by original possum » Thu Aug 09, 2018 2:17 pm

Could also be clutch finger height adjustment or warped clutch plate.
Early 40C w/Yakima toolbar and homebuilt ripper: 350 w/6-way

tldec50
40C crawler
40C crawler
Posts: 12
Joined: Fri Aug 18, 2017 6:35 am
Location: Rex Ga

Re: 40c clutch free play

Post by tldec50 » Thu Aug 09, 2018 4:49 pm

Thanx for the tips will be removing engine next week will post findings,thanx everyone

fundytides
440 crawler
440 crawler
Posts: 121
Joined: Sun Oct 27, 2013 8:41 am
Location: Saint John, NB, Canada

Re: 40c clutch free play

Post by fundytides » Thu Aug 09, 2018 4:56 pm

I had exactly the same problem about 3 years ago. I had the motor rebuilt and while I had it out decided I should install a rebuilt clutch. Being a "newbie", I assumed that the rebuilt clutch would have the fingers set to spec so I just installed it and put everything back together. Couldn't get clutch to disengage enough that gears wouldn't grind. After procrastinating for a while, I pulled the motor and, thanks to the gauge that Lavoy sells, found that the fingers on the clutch were not set properly. Also the lugs on the throwout bearing carrier were worn. After adjusting the fingers properly and having the carrier repaired the clutch would adjust to the required 1 1/2" free travel and no more gear grinding. Good luck!
have 40c 4 roller crawler, 1927 Ford T Touring car, 1931 Ford A Roadster, 1951 Standard Vanguard Saloon. Never a dull moment!

tldec50
40C crawler
40C crawler
Posts: 12
Joined: Fri Aug 18, 2017 6:35 am
Location: Rex Ga

Re: 40c clutch free play

Post by tldec50 » Thu Aug 09, 2018 5:39 pm

What is the finger heightsupposed to be,can not find in service manual thanx,Tim

Jim B
440 crawler
440 crawler
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Location: western Maine

Re: 40c clutch free play

Post by Jim B » Thu Aug 09, 2018 5:52 pm

The pressure plate fingers get set at the initial installation of a replacement clutch, engine or steering. Your 40C should use a gauge (JD 7) to set the fingers once the clutch is assembled on the flywheel. Lavoy has the gauge for sale. He posted a copy of the service bulletin related to this in the FAQ section. Take a few minutes and read that bulletin, it will explain the use of the gauge.

tldec50
40C crawler
40C crawler
Posts: 12
Joined: Fri Aug 18, 2017 6:35 am
Location: Rex Ga

Re: 40c clutch free play

Post by tldec50 » Sat Aug 11, 2018 12:02 pm

Pulled engine this morning,and found snap ring on clutch free play adjustment missing and throw out bearing carrier cocked to one side.release bearing ruined and carrier sleeve and carrier ruined.have all parts to repair except throwout bearing.will be here from Lavoy first of week.also pressure plate fingers ruined.i drilled the free play eccentric and installed cotter pin,don't trust another clip should be back together and back on brush pile next week,thanx for all tie tips and pressure plate adjustment recomendations,Tim

tldec50
40C crawler
40C crawler
Posts: 12
Joined: Fri Aug 18, 2017 6:35 am
Location: Rex Ga

Re: 40c clutch free play

Post by tldec50 » Wed Aug 15, 2018 6:11 pm

Thank you for the suggestions engine back in and shifts great no grinding, clutch fingers adjusted per sb 2 were out.thanks for all the suggestions,Tim ,back to the brush pile tomorrow

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