420c undercarriage rollers

General help and support for your Lindeman through 2010 John Deere crawler
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kevencyr
430 crawler
430 crawler
Posts: 58
Joined: Tue Jun 16, 2015 7:00 pm
Location: new-brunswick

420c undercarriage rollers

Post by kevencyr » Tue May 16, 2017 4:54 pm

is there a way to split those roller so i can change the bearing in it without damaging the parts. i tried a broken one, got it but at the end, my shaft was gone.notice there is a bearing and seal on each side. thank you

JimAnderson
1010 crawler
1010 crawler
Posts: 305
Joined: Mon Apr 04, 2005 7:01 pm
Location: Gloucester,Virginia

Re: 420c undercarriage rollers

Post by JimAnderson » Tue May 16, 2017 9:20 pm

Original 420 rollers have a sleeve bearing on each side.The area inside the roller is much larger than the sleeve OD.If you cannot pull the sleeve then
a special driver which keeps the bearing from falling into the center of the roller needs to be used.This can be made but unless you are restoring the crawler 350 rollers are a much cheaper fix.The seals alone will add up to what new rollers will cost.Lavoy may have new seals or new 350 rollers.The nice thing about the 350 roller is that it is sealed and needs no grease.
4 430C crawlers
1 40c 3 rollers
1 420c 5 roller
1 440c loader
1 430t tractors
1 IH H
1 3020 JDs
I Ford 3400 loaders
2 IH Cubs
6 WH GardenTractors

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440 iron popper
1010 crawler
1010 crawler
Posts: 273
Joined: Sun Sep 26, 2010 7:48 pm
Location: Québec, Canada

Re: 420c undercarriage rollers

Post by 440 iron popper » Thu May 18, 2017 8:54 pm

Last time i checked, deere prices were high for those bushings and seals. Price of bottom rollers has exploded. I bought one in 2010 from deere and it was around 250$. The same roller number today is around 540$!!

I just rebuilt the 2 side frames on my 440 and i thought i would only need 3 rollers. After inspection i replaced all of them (10). The local deere dealer (industrial) offered an aftermarket roller set, sealed for life, 140$/roller which is fair. Considering the number of hours the most of us do with those old crawlers, they should last a long time. I see you're from NB so you might be able to get them as well.

If you are looking for a quick fix, one aftermarket roller is the way to go. If you are going through a rebuild of the side frames, rock guards and rollers you don't want to go back there! My advice would be to replace all of them with new hardware.

An undercarriage wears out as an assembly. Different roller od, for the roller path, applies uneven pressure on the chain links and rollers, etc. You end up having less rollers taking the load in certain terrain conditions, so other problems can develop. Again it always depends on which use you plan to do with the machine vs cost of the repair. Happy wrenching!
440IC 1958 #443712, 602 blade, Gearmatic winch project in the back
440IC, serial tag gone, Blade with tilt
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