JDcrawlers Messageboard

Jim is correct in regards to restacking the valves. Theoretically the double remote assembly uses a different end cover without the return port but this can most likely be plugged and reused. I am on a "long term" overhaul of my 1956 420c ( I can now drive it around after I finally got the the track...

Mine came right off with no effort. Perhaps the dowels are seized or even welled over?

great to find an old post dealing with the same issues I am currently looking at now that i have the rebuilt tracks back on the machine 1) looking at details to install a rock shaft assembly/3 point and deluxe seat- great info in this post- any other thoughts or experiences are appreciated 2) I have...

After about 3 years I am finally reassembling the tracks for my 420 in which lavoy previously installed new pins and bushings. I need to order hardware for my 2 bolt pads. I just realized the parts manual does not give sizing information and the crawler is about 3.5 hours away so I cant easily run o...

4 roller with standard idler uses 31 links per crawler belt
4 roller with oversize idler uses 32 links per crawler belt
5 roller with standard oversized idler uses 35 links per crawler belt

jerry
Good- to see another "wisconsinite" with a 420 crawler!!

I believe the 19" were standard and the 21" (oversize) were an option. The larger idlers use one additional pad in the belt.

My rockshaft seals leak and won't hold oil. Can I put a grease zerk in the fill or drain hole and use grease like I do on the rollers?

I am finally starting to reassemble my 420C focusing initially on the undercarriage and getting the Deluxe Seat installed. The first step is to get the rock shaft assembly installed before mounting the seat. I have a number of questions regarding the rock shaft and would appreciate the members insig...

When i first got my 420 I recall finding it was missing the large plate washer that goes under the filter. Check to see if it got removed when you changed the filter- could be as simple as that.
Mike

I believe the street pad part number you are looking for is M2747T. It is used on both the 40C & 420C

I am finally back to rebuilding my Idler wheels as well. Bushings seem Ok. I have one NOS shaft that is a nice fit. I have 3 used (salvaged) shafts that all seem a bit loose. Is there a standard for acceptable wobble? I have 4 new seals (from Lavoy a couple years ago). Not sure yet about reusing (wo...

rebuilding my rod adjusters as well. Nuts are 1-8 (1 inch/8TPI)

Canuck- My 1956 420C has a 61 Blade

Brandon
'neighbors" near the Mississippi as well. Same county as prairie du Chen but opposite corner. My farm is near soldiers grove
small world
mike

Brandon- welcome to the board. Lots of knowledge and help here. I have a 1956 420c I am "rebuilding" so am similar to you. We are neighbors as I live about 20 miles north of you although my tractor is at the farm in western wisconsin near the Mississippi. Good luck in the rebuiild!

Mike