Search found 2109 matches

by Jim B
Wed Feb 03, 2021 7:19 am
Forum: Early model JD crawler technical support
Topic: 2010 final brg. adjusting
Replies: 3
Views: 3316

Re: 2010 final brg. adjusting

I am guessing you are talking about the inboard bearing on the axle shaft. the cap is visible when you are under the crawler. I can't say for sure if you can get it off in place and then make the adjustment or not. I will say you are there, hands on, to try it if you want. If it doesn't work out you...
by Jim B
Sun Jan 31, 2021 5:53 am
Forum: Late model JD crawler technical support
Topic: What year is my 350
Replies: 5
Views: 3968

Re: What year is my 350

Yes, your crawler is a 1967 build by that number. Machine serial number tag breakdown using the 350 Introduction from the JD parts Catalog: SN = serial number T = Tractor 4 = JD350 E = Crawler - Loader 3 = Diesel D = (Transmission) Sliding Gear with Reverser Serial number: 047766 (This number falls ...
by Jim B
Sat Jan 30, 2021 5:54 pm
Forum: Late model JD crawler technical support
Topic: What year is my 350
Replies: 5
Views: 3968

Re: What year is my 350

I don't think you have found the serial number tag for the crawler. Does your 350 have a loader on it? The numbers you posted look more like the loader model numbers. 7350 was the prefix number for 350 loaders and won't help with your crawler serial number, which is needed to find the right build ye...
by Jim B
Sat Jan 30, 2021 12:59 pm
Forum: Early model JD crawler technical support
Topic: John Deere 420c reverser operation question
Replies: 6
Views: 4331

Re: John Deere 420c reverser operation question

If it is too tight it won't snap in either.
by Jim B
Sat Jan 30, 2021 11:54 am
Forum: Early model JD crawler technical support
Topic: John Deere 420c reverser operation question
Replies: 6
Views: 4331

Re: John Deere 420c reverser operation question

If you have the manual on the reverser for your overhaul, that info and the adjustment procedure should be in it. It should take 25 to 35 pounds of force to "snap" the lever into forward or reverse. If you don't have a manual you can go to https://techpubs.deere.com/ and get a free copy of the 430 o...
by Jim B
Mon Jan 25, 2021 6:39 pm
Forum: Late model JD crawler technical support
Topic: Another Question 350 Winch
Replies: 10
Views: 9978

Re: Another Question 350 Winch

Welcome to the Board.

Thanks for passing the info on, definitely something to be considered if a winch is giving a problem.
Jim
by Jim B
Mon Jan 25, 2021 10:05 am
Forum: Late model JD crawler technical support
Topic: How much should I pay for this late 70's JD 750 Dozer
Replies: 12
Views: 8237

Re: How much should I pay for this late 70's JD 750 Dozer

I agree with 77 Ford on the tracks and undercarriage. If he has not done undercarriage work in the 7 years he has had it, it certainly has not gotten better, so even if 70% then it is less than 70% of new, or more than 70% worn now. I am guessing the 70% listed for the auction was a guess/wishful th...
by Jim B
Mon Jan 25, 2021 8:18 am
Forum: Late model JD crawler technical support
Topic: How much should I pay for this late 70's JD 750 Dozer
Replies: 12
Views: 8237

Re: How much should I pay for this late 70's JD 750 Dozer

Welcome to the Board. I agree with Al on his points. Have you operated it yourself? (Are you familiar with operating heavy equipment, so you have a feeling for its performance?) The serial number can put you on, or close to the year, it was built. There is a serial number list for 750s on the FAQ Bo...
by Jim B
Sun Jan 24, 2021 10:23 am
Forum: Late model JD crawler technical support
Topic: 450C "Milky" engine oil
Replies: 4
Views: 3792

Re: 450C "Milky" engine oil

As I posted before for you. The liners have to be pulled to change the O-rings and packings (JD calls them washers). To pull the liners you have to pull the pistons out of them. The block and liners need to be inspected and cleaned before reassembly. I don't see how that could be done by just raisin...
by Jim B
Fri Jan 22, 2021 5:39 am
Forum: Early model JD crawler technical support
Topic: re..jd440 ic....main clutch
Replies: 8
Views: 7083

Re: re..jd440 ic....main clutch

If you have service manual SM 2023 the rod shows, but is not called out as such, on the first page of the reverser section. It runs close under the shifter housing of the reverser. I can't say on a 440IC, but on my 430 I could see and adjust it from the top. I do have a couple short wrenches I used ...
by Jim B
Thu Jan 21, 2021 10:07 am
Forum: Late model JD crawler technical support
Topic: 450C "Milky" engine oil
Replies: 4
Views: 3792

Re: 450C "Milky" engine oil

I would recommend buying only the proper O-ring seals for the engine (and installation lube), not trying to get them from a place with run of the mill stock O-rings on a shelf. You can drop the pan, pressurize the radiator and lay under it and watch for leaks. You may need to let it set a while befo...
by Jim B
Wed Jan 20, 2021 4:38 pm
Forum: Late model JD crawler technical support
Topic: 1973 450B
Replies: 3
Views: 3063

Re: 1973 450B

Yes, they often get water in them from condensation (a common cause as dtoots1 posted) along with infiltration around gaskets and covers. Sometimes when oil is added it is contaminated. Buckets and drums setting outdoors will collect water, even if they are sealed, due to expansion and contraction. ...
by Jim B
Tue Jan 19, 2021 4:15 pm
Forum: Early model JD crawler technical support
Topic: 420c Trans/reverser seal
Replies: 4
Views: 3611

Re: 420c Trans/reverser seal

Have you sent Lavoy a direct email (postmaster@jdcrawlers.com) or called him (701-361-1006) during central time zone business hours? I know he has posted before he has parts for them. He has also posted, in the past, he doesn't always catch things people mention in posts or get PMs, so he asked for ...
by Jim B
Sat Jan 16, 2021 8:49 pm
Forum: Late model JD crawler technical support
Topic: 1965 straight JD crawler help
Replies: 14
Views: 8526

Re: 1965 straight JD crawler help

Does the hydraulic lift on the back of yours look similar to this one? You might have just the beam without the shanks(teeth). You should post a couple photos showing your complete machine

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