420C

gus · Post by **gus** » Fri Nov 30, 2012 6:29 pm

I didn't know snow was that abrasive. The track adjusters are all the way out.

Lavoy,
Should I be taking special care of mine since I'll only be pushing snow???

BIGO1 · Post by **BIGO1** » Fri Nov 30, 2012 6:42 pm

jtrichard · Post by **jtrichard** » Fri Nov 30, 2012 8:11 pm

lavoy how many links should that 420 have? the sprockets look like new the rails to me also look great from the pics...... i have 2010s so could be wrong on rails also i dont see space between pads like you see when pins are shot BUT the adjusters ARE all the way out... a post you did a year ago said 420 could have 31 or 32 links counted 3 times looks like 32 on this one .... looks like seller got mad about what was said above???? i assume he is the seller from his location

Post by **Lavoy** » Fri Nov 30, 2012 9:25 pm

Snow is very abrasive, but not on the pads, that one looked like it had been run on concrete all its life. Snow will greatly accelerate wear on other components of the undercarriage, but for the average guy, it is not really relavant. If you were running hundreds of hours per year, then it might be.
4 roller full size idler is 32 links, and that is what I count on this one. Judging by idler position, pins and bushings have to be way out. Look closer at the pads on the bottom, then it becomes more obvious when you see the large gap.
Lavoy

jtrichard · Post by **jtrichard** » Fri Nov 30, 2012 9:42 pm

i did notice the bottom i to thought pads were down..... looks like new sprockets?

BIGO1 · Post by **BIGO1** » Sun Dec 02, 2012 9:52 am

jtrichard wrote:i did notice the bottom i to thought pads were down..... looks like new sprockets?

THIS 420C IS EQUIPPED WITH THE OPTIONAL OVERSIZE IDLER WHEELS, EACH TRACK CONTAINS 32 SHOES (14") & LINKS, SO THE ADJUSTERS ARE MAXIMIZED OUT TO ACHIEVE THE 1-1/2" SAG, THANKS FOR YOUR OPINION, THE SELLER IS NOT MAD.

BIGO1 · Post by **BIGO1** » Sun Dec 02, 2012 10:00 am

BIGO1 wrote:
jtrichard wrote:i did notice the bottom i to thought pads were down..... looks like new sprockets?
THIS 420C IS EQUIPPED WITH THE OPTIONAL OVERSIZE IDLER WHEELS, EACH TRACK CONTAINS 32 SHOES (14") & LINKS, SO THE ADJUSTERS ARE MAXIMIZED OUT TO ACHIEVE THE 1-1/2" SAG, THANKS FOR YOUR OPINION, THE SELLER IS NOT MAD.

IN-ADDITION, THE PINS, BUSHINGS, & LINKS ARE ALL WITHIN SPEC. AND THE SHOES ARE AT HALF LIFE PER SAY LOCAL JOHN DEERE TECH. ON LAST SERVICE.

Post by **Lavoy** » Sun Dec 02, 2012 8:10 pm

Idler is not out to maximize sag, it is drastically past the position that you would ever normally run the idler at if the components were in factory spec.
Pads are JUNK, not sure what your local tech is telling you, but maybe he should read the John Deere Undercarriage Manual #SP-326 which states a grouser height of .75 inches to be 100% worn.
Lavoy

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