Search found 25 matches

by dondeere
Sun Aug 26, 2012 9:18 pm
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

how do I turn down the pressure?
by dondeere
Sat Aug 25, 2012 9:53 am
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

ok, well it will not fix the oil from being sucked from the pump at least for now I will not have to worry about the hydraulic oil seizing the engine. I will have to monitor the engine oil level and drain some now and again and top up the hydraulic tank................at least it will be self changi...
by dondeere
Fri Aug 24, 2012 5:47 pm
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

hydraulic troubles again

used the crawler a few times and noted the oil level increasing again and the hydraulic oil decreasing, I suspect that the pump is throwing hydraulic oil into the engine again for some unknown reason. I have an original owners manual and it says to use SAE 20 oil in the engine and SAE10 oil in the h...
by dondeere
Mon Jul 16, 2012 9:13 pm
Forum: Early model JD crawler technical support
Topic: gearmatic winch installation on 440 crawler
Replies: 8
Views: 9145

I pumped and pumped and cracked open the lines and nothing but pure fluid came out...............but still nothing. If you open the barrel bung inspection cap you can see it turning, but when the levers are moved it just keeps spinning and nothing happens?, thinking maybe the linings are slipping or...
by dondeere
Mon Jul 16, 2012 9:24 am
Forum: Early model JD crawler technical support
Topic: gearmatic winch installation on 440 crawler
Replies: 8
Views: 9145

gearmatic winch not working

have it all installed, but the winch does not work, It will not winch in or out, the winch is turning inside when the pto is engaged, but when the lever on the control is activated it does not make it engage. Is there any tests that can be done, the controller has been rebuilt, new clutch hose and n...
by dondeere
Fri Jun 08, 2012 5:24 pm
Forum: Early model JD crawler technical support
Topic: gearmatic winch installation on 440 crawler
Replies: 8
Views: 9145

ok, will do thanks
by dondeere
Wed Jun 06, 2012 7:53 am
Forum: Early model JD crawler technical support
Topic: gearmatic winch installation on 440 crawler
Replies: 8
Views: 9145

am going out today to see if I can find one, was going to try and use the front part of a drive shaft yoke from a 21 spline drive shaft, will cut off 3 inches and use that. Its hard to find an actual PTO coupler in my City.
by dondeere
Tue Jun 05, 2012 1:52 pm
Forum: Early model JD crawler technical support
Topic: gearmatic winch installation on 440 crawler
Replies: 8
Views: 9145

gearmatic winch installation on 440 crawler

I just restored a gearmatic winch and am in the process of installing it on the crawler, took the cover off the PTO housing and see that there is a male 21 spline shaft. On the John Deere winch mount there is a gear on one side to mate to the winch and on the other side there is also a 21 spline mal...
by dondeere
Wed May 30, 2012 5:51 pm
Forum: Lavoy's Little Shop O' Deeres
Topic: gearmatic winch control housing
Replies: 3
Views: 4122

replied to you but never heard back
by dondeere
Wed May 30, 2012 5:45 pm
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

the hydraulic pump has been repaired, the pump in the JD diagrams and parts page for the 420 and 440 is the same, but the parts are not, there is no "O" rings in pump or on the shaft, there is an oil seal on the outside of the housing and 2 square gaskets sealing the sections. They were very hard to...
by dondeere
Fri May 18, 2012 10:08 am
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

I pulled the pump apart today and see that there is a seal on the shaft that has failed, however it does not show it on the parts list and photo for the pump?, it shows a washer, would this be the part?, I am going to JD today to see if I can order all the parts but fear they are obsolete.
by dondeere
Fri May 18, 2012 8:23 am
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

I always try to give people the benefit of the doubt, however this time, I am confident all the problems were known and patched with a wing and a prayer...and a grin.
No worries, I paid alot for the crawler and am way over budget, but I will fix it properly and learn something in return.
by dondeere
Wed May 16, 2012 8:18 am
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

it keeps getting worse, I went from buying a "excellent" running crawler with no issues that "he" knows of to a giant paper weight with issue after issue, got to love guys who tell you "its good".
by dondeere
Wed May 16, 2012 7:48 am
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

also while removing the radiator, I noticed oil in the antifreeze and the hydraulic oil is milky, not sure what is going on.
any ideas?
by dondeere
Wed May 16, 2012 7:22 am
Forum: Early model JD crawler technical support
Topic: JD 440 gas hydraulic troubles- oil going into engine.
Replies: 25
Views: 19616

how do I check the bypass pressure?, is there not a relief valve?, would it be in the pump or the control valve.