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Fellenz 
Silver Level
Joined: 22 Mar 2010
Location: Phelps, NY
Points: 148
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 Topic: 160 Clutch Question
Posted: 05 Jan 2011 at 6:35pm |
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Hello,
We're almost done with our first 160 rebuild, the engine is done and the clutch is being reassembled with new discs and a new throwout bearing.
But we've run into an issue. The clutch all seems to be going together right but when it's completely assembled the distance between the contact surfaces on the fingers and the surface of the PTO disc is about .500" too small. Basically the fingers look like they're already depressed before the clutch pedal is pressed and the throwout bearing makes contact.
Is there anything obvious that could be causing this problem? We've already built it up and torn it apart two times and nothing looks to be out of place?
Oh, the flywheel was resurfaced .040" but I can't see how this could be a contributing factor as the flywheel was match machined so nothing would be thrown off.
Any ideas?
I'll take pictures tomorrow morning to better explain what we're seeing.
Thanks,
Erik
Edited by Fellenz - 05 Jan 2011 at 6:38pm
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Brian Jasper co. Ia
Orange Level
Joined: 11 Sep 2009
Location: Prairie City Ia
Points: 10508
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Posted: 05 Jan 2011 at 9:46pm |
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Do the release levers have any adjustment screws on them? Just thinking out loud.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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Bret (OH)
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Joined: 15 Sep 2009
Location: Blanchester, OH
Points: 347
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Posted: 06 Jan 2011 at 8:08am |
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Make sure the fingers are not locked somehow in the released position. On a Series iV we just did, the fingers had a short length of keystock placed under the fingers by the rebuilder to hold them in the released position.
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Steve M C/IL
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Joined: 01 Jul 2010
Location: shelbyville IL
Points: 691
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Posted: 06 Jan 2011 at 10:16am |
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Something is different lenght in pressure plate or throw brg compared to the old ones.
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Fellenz
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Joined: 22 Mar 2010
Location: Phelps, NY
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Posted: 07 Jan 2011 at 1:14pm |
 Brian Jasper co. Ia wrote:
Do the release levers have any adjustment screws on them? Just thinking out loud. |
Yes, the release levers use bolts to contact the throwout bearing so they can be adjusted in and out, it just seems like almost .500" of adjustment is excessive if everything else is right?
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Fellenz
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Joined: 22 Mar 2010
Location: Phelps, NY
Points: 148
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Posted: 07 Jan 2011 at 1:17pm |
Bret (OH) wrote:
Make sure the fingers are not locked somehow in the released position. On a Series iV we just did, the fingers had a short length of keystock placed under the fingers by the rebuilder to hold them in the released position. |
The fingers aren't locked, they pop up to the full out position (too far out) and then move back down as the clutch is assembled and the springs are put under pressure. Measuring between the contact surfaces on the fingers to the PTO disc the fingers go from being about 1/2" too far out when it's assembled outside the tractor to 1/2" too far in when it's bolted onto the crown ring and compresses against the transmission disc.
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Fellenz
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Joined: 22 Mar 2010
Location: Phelps, NY
Points: 148
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Posted: 07 Jan 2011 at 1:20pm |
Steve M C/IL wrote:
Something is different lenght in pressure plate or throw brg compared to the old ones. |
I haven't checked the new throwout bearing, but even if it is different that wouldn't have any affect on the distance between the fingers and the PTO disc. I'll check it anyway though.
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Good
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Joined: 05 Apr 2010
Location: Logansport IN
Points: 453
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Posted: 07 Jan 2011 at 1:48pm |
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I had the same thing as Bret said. I was awfull worried until I noticed the keystock and it wasn't easy to see.
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B212,716,two 314H's,WC,WD,D19,190XT
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Tracy Martin TN
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Joined: 11 Sep 2009
Location: Gallatin,TN
Points: 10667
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Posted: 07 Jan 2011 at 4:02pm |
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Two reasons cause your condition most of the time. If clutch disc is thicker than original it lets finger height be too low when PP is bolted to flywheel. PP housing or PP itself can be too thick, Fingers are set to flat surface of housing, if PP itself is too thick, low finger height will happen. Either of these conditions will need attention. Not just finger height adjustment. If in doubt, call a clutch specialist, our resident Rick Corder on this page will help you out. HTH Tracy Martin
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