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jd 2240 older tractor brakes

W

wally b

Member
This is a 2240 two wheel drive tractor about 40 yrs old?? Anyway I hit something and broke the right brake line. Lost brake steering which is essential for these tractors to turn under loads. I
replaced the brake line and found a bleeder on the top of the axle and started trying to bleed the air. How long should this take? I seemed to get a ton of air and a bit of fluid but I did this for 15
minutes or so in such a way as air could not get sucked back into the bleeder. Petal still super soft. Any thoughts? Don't have a manual for the brake bleeding proceedure so any help would be
good. It looks like the brakes are using hydraulic fluid--dont see a master cylinder like on a car.

Any help would be mucho appreciated!!!
 
Do you have the tractor engine running? It uses the hydraulic system to provide the oil and pressure to apply the brakes.
 
no not running but I then started it up and had no brake pressure. Should I bleed the brakes while running?
 
Put some clear tubing onto bleeder screw and run it into where you fill the hyd. oil. Now start the engine. Loosen the bleed screw and then depress the pedal and hold it there until clear fluid with no bubbles flows then tighten bleed screw but be careful as it will force up your foot ! I'd do the other side too.
 
(quoted from post at 09:16:56 11/06/19) Put some clear tubing onto bleeder screw and run it into where you fill the hyd. oil. Now start the engine. Loosen the bleed screw and then depress the pedal and hold it there until clear fluid with no bubbles flows then tighten bleed screw but be careful as it will force up your foot ! I'd do the other side too.
Click to expand...

Mike
Holding brake pedal down continuously while attempting to bleed brakes on JD utility tractors of this era will not get brakes bled because plunger must return to extended position to pick up more hyd oil for next pedal application.
Jim
 
I never had to pump them ? Tractor did the work and moved the fluid thru the system on the several I have done ? I even remember reading about this in a manual and it warned to watch your leg as you closed the bleeder as it would force it up.
 

Mike
Your interpretation of info stated in a JD utility tractor tech manual such as a TM4300 for a 2040 which will apply to other similar JD utility tractors is different than my interpretation. Here's a photo of the brake bleeding procedure that states after depressing pedal then allow pedal to return slowly. Continue operating pedal until oil in clear tube is free of bubbles. I see no mention to hold pedal continuously during bleeding procedure.

mvphoto44919.jpg
 
Thanks for all the help! This will get me back in the field to finish planting before the northwest rains hit for the winter!!

Walt
 
(quoted from post at 14:13:01 11/06/19)
Mike
Your interpretation of info stated in a JD utility tractor tech manual such as a TM4300 for a 2040 which will apply to other similar JD utility tractors is different than my interpretation. Here's a photo of the brake bleeding procedure that states after depressing pedal then allow pedal to return slowly. Continue operating pedal until oil in clear tube is free of bubbles. I see no mention to hold pedal continuously during bleeding procedure.

mvphoto44919.jpg
Click to expand...

SM 1051 for 2030s gives the same procedure. I had the engine running and had to work the pedal to get the brakes to bleed after doing the brakes on my 2030.
 
hello,, your foot is the pressure for these brakes,, in general,, bleed them like we did on automobiles back in the day.. have the tractor running so oil can trickle into the master cylinder.. another reply on this subject said, hold pedal down and pressure will bleed air out,, he was refering to 3020,, 4020, 4430, 4440, etc,,,which have power brakes.
 
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