Search found 609 matches

by Ray III
Fri Apr 07, 2023 9:26 am
Forum: Early model JD crawler technical support
Topic: Gearmatic 8a needs Parts and Manual
Replies: 8
Views: 6837

Re: Gearmatic 8a needs Parts and Manual

Tom on here sent me a bearing cross reference once if you still want it.

Last year I posted where to find clutch bands, but they are expensive and want the cores back if you have any.
by Ray III
Fri Apr 07, 2023 7:45 am
Forum: Early model JD crawler technical support
Topic: 40c Ignition problems
Replies: 8
Views: 9119

Re: 40c Ignition problems

I have read a page on the Internet that accuses condenser manufacturers of not making a good connection to the rolled up foil inside when sealing up the ends of the can. If you have an ohmmeter it may have a capacitance test function. This can be used to check condensers before you waste your time w...
by Ray III
Fri Apr 07, 2023 7:27 am
Forum: Early model JD crawler technical support
Topic: Series One 420 Color Scheme
Replies: 2
Views: 6154

Re: Series One 420 Color Scheme

The early 420's were very similar to the model 40 from what I can see. My guess is they didn't do a complete retool going from 40 to 420, it was more of a transition.
by Ray III
Mon Apr 18, 2022 5:51 pm
Forum: Early model JD crawler technical support
Topic: JD 420 Hydraulic Fitting Sizes
Replies: 2
Views: 2043

Re: JD 420 Hydraulic Fitting Sizes

I believe the pressure line from the camshaft driven pump on the front of the engine to the valve body is a 1/2" flared pipe. If you make one, it needs to be double flare or it will leak. The suction pipe used compression fittings with rubber seals. I'm not sure if those compression fittings can be ...
by Ray III
Mon Apr 11, 2022 2:17 pm
Forum: Early model JD crawler technical support
Topic: gearmatic winch master control
Replies: 5
Views: 6923

Re: gearmatic winch master control

No, brake is self-applying, it only disengages when spooling out. Lavoy I think what you are saying is the brake grabs in one direction but not the other? It seemed to winch really hard when using it without the controller and a stuck clutch, but that may have been from the excessive amount of rust...
by Ray III
Sat Apr 09, 2022 7:20 am
Forum: Early model JD crawler technical support
Topic: gearmatic winch master control
Replies: 5
Views: 6923

Re: gearmatic winch master control

When you apply the clutch, is the winch supposed to reel in with the brake applied? I was under the impression that the master control had some gimmick for relieving pressure on the brake at the same time that the clutch was engaged, but after taking it apart they seem to be completely independent.
by Ray III
Thu Feb 24, 2022 11:03 am
Forum: Early model JD crawler technical support
Topic: Gearmatic 8a clutch bands
Replies: 5
Views: 4398

Re: Gearmatic 8a clutch bands

The problem I had was my primary (narrow) band was missing, so a re-line was out. I did find replacement relined bands. The new material was gray and smooth without any inclusions and looked like it was formed right on the band, but it could be bonded, I don't know. Champion Technologies does clutch...
by Ray III
Mon Feb 14, 2022 9:08 am
Forum: Early model JD crawler technical support
Topic: 40/420 head
Replies: 5
Views: 3565

Re: 40/420 head

Same happened to me, just stopped being able to start it one day. Machine shop put new valve seat inserts in.

40 and older didn't have a water pump and were prone to overheating, but I didn't think cracked heads were common on a 420.
by Ray III
Mon Feb 14, 2022 9:02 am
Forum: John Deere crawler FAQ's
Topic: Roller grease and guns
Replies: 31
Views: 1959254

Re: Roller grease and guns

Thanks guys, I couldn't find such a thing before but the John Deere part number for a 35 pound container of corn head grease is AH80490.
by Ray III
Thu Feb 10, 2022 9:03 am
Forum: John Deere crawler FAQ's
Topic: Roller grease and guns
Replies: 31
Views: 1959254

Re: Roller grease and guns

Where can I get corn head grease or an equivalent in gallon or pail size containers?

I have an Alemite 6521 grease pump that looks like it would hold about 3 gallons. It was given to me with what looks like 000 or 00 in it, but I have exhausted the supply.
by Ray III
Wed Feb 09, 2022 6:09 am
Forum: Early model JD crawler technical support
Topic: Gearmatic 8a clutch bands
Replies: 5
Views: 4398

Re: Gearmatic 8a vs 19 parts

Alright, thanks Lavoy. I guess I will try contacting the people making bands for the 19 and ask about the 8a.

If anyone has a direction to point me in for getting a new or used primary clutch band that would be great. (The secondary band looks like it might be in there in need of a new lining.)
by Ray III
Mon Feb 07, 2022 10:48 am
Forum: Early model JD crawler technical support
Topic: Gearmatic 8a clutch bands
Replies: 5
Views: 4398

Gearmatic 8a clutch bands

Can anyone confirm whether the Gearmatic 19 clutch bands are a direct fit for the 8a? I see suggestions of this on the interweb, but nothing concrete.
by Ray III
Fri Jan 28, 2022 5:22 pm
Forum: Early model JD crawler technical support
Topic: Gearmatic 8A Winch
Replies: 3
Views: 4305

Re: Gearmatic 8A Winch

Some people have PDF copies of the manual. If you need to you can send me a private message with your e-mail address and I will send it.
by Ray III
Fri Jan 28, 2022 2:23 pm
Forum: Early model JD crawler technical support
Topic: Master pins
Replies: 7
Views: 4148

Re: Master pins

I was able to start it off with a small punch to one end, then get a screwdriver under it to pry it off. Keep a pair of needle nose pliers on it for when it tries to take off.‎
by Ray III
Wed Jan 19, 2022 3:22 pm
Forum: Early model JD crawler technical support
Topic: Seafoam in Hydraulic System?
Replies: 4
Views: 3760

Re: Seafoam in Hydraulic System?

The oil has to be changed every year, trying to leave it in there just does not work. Deere actually wanted it changed every spring and fall. I also replaced my drain plug with an elbow and ball valve with the handle cut off. Now I can drop a socket down there with a long extension (to the nut on th...