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by Lavoy
Thu Feb 01, 2024 9:13 am
Forum: Early model JD crawler technical support
Topic: 420C front idler size difference
Replies: 6
Views: 811

Re: 420C front idler size difference

I should have bushings on hand, if not, short delay.
Lavoy
by Lavoy
Sat Jan 27, 2024 9:27 am
Forum: John Deere crawler FAQ's
Topic: JD350 thru JD350D Serial Numbers
Replies: 49
Views: 206938

Re: JD350 thru JD350D Serial Numbers

I don't think that the parts book support that possibility, but been a while since I researched it. Plus historically, when Deere did changeover between models, production stops while the changes are made to the plant for the new model. There is really no reason to have made a conglomeration crawler...
by Lavoy
Thu Jan 25, 2024 8:52 am
Forum: John Deere crawler FAQ's
Topic: JD350 thru JD350D Serial Numbers
Replies: 49
Views: 206938

Re: JD350 thru JD350D Serial Numbers

Then I would guess it is a mistamped tag, as the serial number seems to jive with a C model.
Lavoy
by Lavoy
Tue Jan 23, 2024 3:44 pm
Forum: John Deere crawler FAQ's
Topic: JD350 thru JD350D Serial Numbers
Replies: 49
Views: 206938

Re: JD350 thru JD350D Serial Numbers

219,500 is the first C series, so if it starts with 22XXXX, yours is a C model which is why it has wet clutches. Is the serial number 350CB, which would make it a C model diesel, loader crawler.
Lavoy
by Lavoy
Mon Jan 22, 2024 3:10 pm
Forum: Early model JD crawler technical support
Topic: 420C Single Remote Control Valve Assembly
Replies: 2
Views: 1638

Re: 420C Single Remote Control Valve Assembly

Seal goes betwen the flange on the tube and casting. If I remember correctly it is just an oring.
Lavoy
by Lavoy
Mon Jan 22, 2024 3:09 pm
Forum: Early model JD crawler technical support
Topic: Oops?
Replies: 8
Views: 1038

Re: Oops?

If the throttle shaft is moving, unlikely it is the governor.
Lavoy
by Lavoy
Mon Jan 22, 2024 3:06 pm
Forum: Early model JD crawler technical support
Topic: 420C right steering clutch slippage.
Replies: 3
Views: 713

Re: 420C right steering clutch slippage.

Often times it is oil contamination, which tends to get worse as the clutch gets warmer.
Lavoy
by Lavoy
Fri Jan 19, 2024 6:19 pm
Forum: Early model JD crawler technical support
Topic: Oops?
Replies: 8
Views: 1038

Re: Oops?

Make sure that the throttle shaft is not iced up in the carburetor, not uncommon in cold weather.
Lavoy
by Lavoy
Fri Jan 19, 2024 9:38 am
Forum: Early model JD crawler technical support
Topic: jd420 pics
Replies: 133
Views: 508526

Re: jd420 pics

Did you have the head or block planed?
I have a running 430/440 engine, but won't have it out til summer.
Lavoy
by Lavoy
Mon Jan 15, 2024 8:27 am
Forum: Early model JD crawler technical support
Topic: jd420 pics
Replies: 133
Views: 508526

Re: jd420 pics

If you put the head gasket in dry, that is often an issue. Use one of the copper sprays, or Hylomar.
Lavoy
by Lavoy
Mon Jan 15, 2024 8:24 am
Forum: Early model JD crawler technical support
Topic: Final drive inop
Replies: 1
Views: 798

Re: Final drive inop

Only way to tell is take the final drive off unfortunately, could be sevearl different thingss.
Lavoy
by Lavoy
Mon Jan 08, 2024 6:58 pm
Forum: Early model JD crawler technical support
Topic: 420-c loader
Replies: 10
Views: 11857

Re: 420-c loader

Shouldn't be an issue.
Lavoy
by Lavoy
Mon Jan 08, 2024 6:58 pm
Forum: Early model JD crawler technical support
Topic: MC Starter Weak, Replace or Rebuild?
Replies: 4
Views: 4985

Re: MC Starter Weak, Replace or Rebuild?

I have starters in stock, normally stock rebuild parts, short on a few pieces right now.
by Lavoy
Thu Dec 28, 2023 1:43 pm
Forum: Off-topic discussions
Topic: Merry Christmas
Replies: 5
Views: 6788

Re: Merry Christmas

Merry Christmas to everyone.
Lavoy
by Lavoy
Sat Dec 23, 2023 10:48 pm
Forum: Early model JD crawler technical support
Topic: What gas for an old 420c?
Replies: 2
Views: 3578

Re: What gas for an old 420c?

You can add a little lead substitute if you want. You likely aren't going to put on enough hours to cause much valve recession. Octane is a waste of time on these old girls, probably 7 to 1 compression maybe.
Lavoy