Main Engine Pressure Plate Adjustment

General help and support for your Lindeman through 2010 John Deere crawler
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gregjo1948
350 crawler
350 crawler
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Post by gregjo1948 » Mon Feb 10, 2014 11:33 am

I think when you push the pedal to extreme, the springs will reach their full compression. gregjo1948
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17, 1620 Ford

foxd
440 crawler
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Post by foxd » Mon Feb 10, 2014 2:06 pm

That may be correct.
The reason I brought it up is because with the worn out flywheel, pressure plate and driven disc the clutch pedal linkage was adjusted to be as short as it could be to compensate. After adjusting the linkage I have about 1 1/2" to 2" of free play, then about 2" of travel before I hit some sort of a stop. Possibly the fingers again the pressure plate or springs bottoming out. My 40U & 430C both seem to have more travel after the throwout bearing contacts fingers. Just seems a bit odd.
'39 B, '48 B, '49 A, '50 B, '54 40U, '55 40U, '59 430U, '60 430C

foxd
440 crawler
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Location: Mt. Pleasant, IA

Post by foxd » Mon Feb 10, 2014 6:34 pm

Correction to my previous post...
When I got home tonight I decided double checked my linkage adjustment, since I had not actually gotten a tape measure out and taken the time to set it per the manual, shame on me. :oops: The 440 service manual says free play should be 1". When I checked mine I was at 3 1/2" of free play and 2 1/2" of travel after the throw out bearing contacted the fingers (6" total travel). Once I set the free play to 1" I had 5" of travel after the throw out bearing contacted the fingers (still 6" total travel). Much better!!
'39 B, '48 B, '49 A, '50 B, '54 40U, '55 40U, '59 430U, '60 430C

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Bret4207
440 crawler
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Re: your clutch

Post by Bret4207 » Tue Feb 18, 2014 7:37 pm

vtjoe wrote:we assume that you have "The Guage" for performing the proper adjustments.....it is a must have-- contact Lavoy for one if you don't
I have a main clutch replacement coming up on my 40, so...what's this special gauge? I thought that was for the steering clutches?
40C, 420C, 1010C-L-BH, Cat D4

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shinnery
350 crawler
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Post by shinnery » Tue Feb 18, 2014 11:56 pm

I believe, if the pressure plate has adjustable fingers or levers on it, you need to use "the gauge" to set them. Just use a different area of the gauge.
Bryce
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440IC/602, 2-440ICD/831 MM UBU-LP, 445N-LP, 445E-LP, BIG MO 400-M, 4 Star-LP M5-D, M5-LP, M602-LP, M670-LP, G900-LP, G900-D, G1000 Vista-LP Case 580CK

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gregjo1948
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Post by gregjo1948 » Wed Feb 19, 2014 5:31 am

I didn't think they were adjustable. gregjo1948
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17, 1620 Ford

vtjoe
430 crawler
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your clutch

Post by vtjoe » Wed Feb 19, 2014 7:01 am

gotta read the manual!!!
1957 420C four roll since 1982

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Lavoy
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Post by Lavoy » Wed Feb 19, 2014 8:44 am

The service bulletin regarding this is listed in the FAQ's section here, but in a nutshell, ALL pressure plates in John Deere crawlers up to at least 450's need to be adjusted once the clutch pack is assembled.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
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