4010 tranmision pump April 18, 2012 12:51PM
is ther any way to make hydrolic pump in transmion run with clutch released? haveing trouble when takeing off loosing brakes and steering i think if that pump ran wile reving up i would be ok. this does not always happen but i loose them and to get them back i shut tractor off start right back up and they are back.
Reply Quote

Re: 4010 tranmision pump April 18, 2012 01:25PM
Unfortunatly no, how long is it til u lose steering and brakes-should be at leased 60 seconds if not you have a simple valve problem,
Reply Quote

Re: 4010 tranmision pump April 18, 2012 01:38PM
sometimes it is under 60 seconds sometimes it doesnt happen but it happens often and always goes out when im taking off
Reply Quote

Re: 4010 tranmision pump April 18, 2012 02:05PM
check for a high pressure leak to sump
Reply Quote

Re: 4010 tranmision pump April 18, 2012 11:33PM
how do i do that
Reply Quote

Re: 4010 tranmision pump April 19, 2012 02:22AM
You can also install a large tank over top your front pump in your oil supply line so that your front pump doesn't run out of oil when the clutch is pushed down. You do apparently have a high pressure leak somewhere though as you should not be using any hydraulics unless you are steering or brakeing. If you have a hitch or remote valves the leak is most likely in them.
Reply Quote

Re: 4010 tranmision pump April 19, 2012 12:43PM
how big of a tank would i need? and would it need presureized ?
Reply Quote

Re: 4010 tranmision pump April 23, 2012 08:54AM
would a tank over the front pump give me more troubles such as air pockets?
Reply Quote

Re: 4010 tranmision pump April 23, 2012 03:49PM
Some tractors have as big as a 2 gallon reservoir up front. It needs to be able to withstand trans pump pressure and air should not be a problem. A 4840 has a big reservoir you might could use if you can fit it up front someplace.
Reply Quote

Re: 4010 tranmision pump April 19, 2012 11:27AM
If your hyd. come right back after you shut down and start back up it sounds like the sump screen is plugged,check it if you have'nt.
Reply Quote

Re: 4010 tranmision pump April 19, 2012 12:41PM
by sump screen if you mean the tubeular screen in bottom of trans i cleand it changed filter and oil
Reply Quote

Re: 4010 tranmision pump April 19, 2012 12:47PM
Waiting for grader tractor, flagman leave it in neutral with clutch out, till your ready.
Reply Quote

Re: 4010 tranmision pump April 19, 2012 12:53PM
that always doesnt work
Reply Quote

Re: 4010 tranmision pump April 19, 2012 12:58PM
you can check for a high pressure leak to sump by starting the tractor when everything is dead cold, let it run without using any hydraulic functions for 15 minutes or so, check for 'hot spots' by feeling lines, brakes, steering, rockshaft, SCVs. if you suspect a function, cap it off and try again when everything cools down. repair accordingly.
Reply Quote

Re: 4010 tranmision pump April 19, 2012 12:59PM
What class are you running? Does your class allow you to remove the hydraulics etc.? You could use an electric pump set up or go to manual brakes and steering if allowed?
Reply Quote

Re: 4010 tranmision pump April 19, 2012 01:04PM
i only have steering and brakes hook up everything else is gone im runing a small hydro pump in front
Reply Quote

Re: 4010 tranmision pump April 19, 2012 01:14PM
the small hyd pump you have in front, is it an open center gear pump? the JD steering and brakes are closed center.
Reply Quote

Re: 4010 tranmision pump April 19, 2012 01:16PM
imnot sure on that but i had this prom with the stock hydro pump
Reply Quote

Re: 4010 tranmision pump April 19, 2012 05:32PM
I own 2 4320 2 4020 1 3020 and do all work to them myself. Not swell headed just have seen lots of differant problems with them. Here is my 2 cents. Take the lines off the pressure control valve and take the fitting out of the front this allows you to remove a valve, spring, shims, and etc. I would check the spring free lenght in the book, it is probably to short. I would just replace it with new (R40072). Then look at valve and housing if valve is scored you can take fine sand paper and lap and do the same with housing bore if needed. I would add extra shims (24H1283) to add more pressure to spring, not two many just a couple at a time. Doing this should help keep the valve from sticking, whitch it sounds like it is and the shims should help keep your steering and brakes pressured up longer. And read the section of your service manual that gives a discription of the operation of the pressure controll valve, this should give you a better understanding of why and what you are doing. Happy wrenching!
Reply Quote

Re: 4010 tranmision pump April 27, 2012 09:29AM
What type of electric pump do you use? what do you do with oil filter housing and bypass housing and transmission housing?
Reply Quote

Re: 4010 tranmision pump April 28, 2012 07:10AM
the pump is belt driven. if u could give me your phone number i could explain it more deatailed



Edited 1 time(s). Last edit at 04/28/2012 07:11AM by 48 jd A puller.
Reply Quote

Re: 4010 tranmision pump May 09, 2012 09:49AM
It is quite easy to get the trans pump suction tube gasket installed wrong. This blocks the inlet at the trans pump by about 50% and causes loss of hydraulics quickly when the clutch is disengaged. If you are running an open center gear type hyd pump, this pump flows oil all the time it is running. If this is the type hyd pump you have, the trans pump would need to run all the time which it can not when the clutch is disengaged. Go with an electric which will run all the time.
Reply Quote

Newer Topic Older Topic

Author:

Your Email:


Subject:
Spam prevention:
Please, enter the code that you see below in the input field. This is for blocking bots that try to post this form automatically. If the code is hard to read, then just try to guess it right. If you enter the wrong code, a new image is created and you get another chance to enter it right.
Message:
Website Statistics
Global: Topics: 38,771, Posts: 229,938, Members: 3,338.
This forum: Topics: 37,096, Posts: 226,027.

Our newest member Jacklovik2009