JDcrawlers Messageboard

I had the same problem with fuel tank pressurizing this past summer. The gas tank has started weeping around the seam of tank up next to the throttle area. Have a new style fan blade now installed that was supplied by Lavoy and another tank to go in. Will see how this goes. One thing I did notice th...

I just went through a 420 crawler completely. Purchased it with a busted final drive housing. But the more you looked at it at and inspected, there was more that needed repair / replacement. It wound up being a 4 year project and a lot of money. It now has every bolt new, except the engine bolts, re...

How much modification would it take to mount what looks like a #63 on a 420? I think that is what is on a 1010 in a local parts yard. I already have the blade itself but need mounting arms, cylinders, etc,.

No. The threads just don't feel right. Have not even tried it with a piece of tubing yet. It looks like pipe threads but the John Deere manual shows it as a compression fitting on that end. The end with the strainer is 1/8 pipe threads.

What size and threads is the nut that screws on the elbow with a strainer that is screwed into carburetor? It looks like 1/4" tubing but only goes on about 1 turn before tighting up which is not enough to compress the ferrule.

Lavoy, On the front idlers you have ( 2 ) ribs that stick up and and go all the way around the rim. These ribs are to run in the center of the track. My question is if one of the ribs are worn both down in height, and also thin side to side, Is this critical or can the idler still be run. Another th...

Lavoy,

What battery sheet metal is available and the cost for a 420c?

It is a 5 roller and does have a blade. How well will the smaller idler work because they seem to be in better condition?

Getting ready to start working on the frame where the front idlers and rollers are mounted. The two that came off of the crawler when running were approximately 18.5" dia. With the crawler came some extra parts which included some more front idlers. These are approx. 20.5" dia. The crawler is a 420c...

Lavoy, The throw out bearing carrier JD pt.# M 1617T. Had both final drives in the tractor and in adjusting the throwout bearing on one side the bolt hole stripped out. That is one problem. The other problem / question I have is that when you are adjusting the throw out bearing, once you slide the b...

I need two master link pins. I have looked real close at the track and all of the pins look the same. One side of the tracks were already broke loose when I got the tractor.

Lavoy, The equalizer spring that goes inside the ring gear shaft where the high speed pinion shafts of final drive goes in. Is there one or two used? Also where all do I need to mic to give you the information to supply master links for my 420c tracks? Also could you once again tell me the way to re...

When I tore down both of my final drives on my 420c, one side had the 63 tooth bull gear and 16 pinion gear combination, and the other side had the 55 tooth bull gear and the 14 pinion gear combination. I have a couple of old gears and was wondering which ratio works best for the 420c model?