Does A John Deere Fylinder Need Bleeding After Repair

sometime boy

Posted i/2/2017 18:02 (#5739333)
Subject: Master cylinder 7000,7200 correct procedure I rephasing

What is th John Deere correct method to get it rephrased and ground pinnacle twenty to 22 inches
Where is information technology in the manuals

When done correctly how many inches Downwardly stroke does each cylinder have earlier bottom out of stroke?

Is there a concrete lesser line respond

Edited by former boy 1/two/2017 eighteen:05

Little Duck

Posted 1/ii/2017 18:23 (#5739403 - in reply to #5739333)
Discipline: RE: Master cylinder 7000,7200 right procedure I rephasing

Due south East Illinois

Take the stops of that are held on with hose clamps. Raise upwards and agree hydraulic lever for a count of 30-40. Then down for a count of xxx-40. Exercise information technology couple of times then put stops dorsum on and should be good to go. Holding hydraulic lever gets everything rephrased
Adept luck old boy

Posted 1/2/2017 18:thirty (#5739427 - in answer to #5739403)
Subject: RE: Master cylinder 7000,7200 right procedure I rephasing

Niggling Duck - one/two/2017 18:23

Take the stops of that are held on with hose clamps. Raise up and agree hydraulic lever for a count of thirty-40. So downwardly for a count of 30-xl. Practice it couple of times then put stops back on and should exist skillful to go. Property hydraulic lever gets everything rephrased
Practiced luck

What about bleeding cylinders for air from bleeders
Will ground summit be correct

Little Duck

Posted 1/2/2017 18:35 (#5739439 - in answer to #5739427)
Subject: RE: Master cylinder 7000,7200 correct procedure I rephasing

S East Illinois

Rephrasing should take care of air
By property lever it pushes oil through the arrangement removing air. If that makes sense. You can bleed each ane just will still demand to repose to go it to run level side to sides SWMN-JD

Posted 1/two/2017 19:36 (#5739636 - in reply to #5739333)
Subject: RE: Master cylinder 7000,7200 correct procedure I rephasing

Those master cylinders are unmarried interim cylinders, oil from endeavor raises, weight of the planter lowers. Each master cylinder is really two cylinders sharing a ram. Rephrasing replenishes the oil that has either leaked out afterward the cylinder or has leaked by the piston within the cylinder. The just way to get the air out is to loosen the bleeders while holding the planter to raise while doing it. If oil just needs to be replenished it doesn't need to exist bled to remove air. Air is introduced when replacing hose or repairing cylinders. thefarmers

Posted ane/2/2017 20:24 (#5739803 - in respond to #5739439)
Subject: RE: Master cylinder 7000,7200 correct process I rephasings

On our onetime 7200, we always took the two clamps off, then raised and held, but when yous left it dorsum downward the eye was ever loftier. We always so bled oil out of the eye cylinders to level the heart with the wings. Don't know if that was proper, merely that's the manner we ever did it, and ran it that way for xv years. It e'er maintained level for the season. Never worried well-nigh frame height other than to make sure it was level across.

Edited past thefarmers i/2/2017 20:26

hf213

Posted 1/3/2017 06:32 (#5740376 - in reply to #5739333)
Bailiwick: RE: Chief cylinder 7000,7200 correct process I rephasing

NW Ohio

Remove front split collars, raise planter full upward. fissure bleeders at longest altitude from master cylinder 1st, then work your mode inward. Depending on how much air was introduced into system, may have to repeat a few more times.

BE Aware of where you are standing, and so you are clear of moving parts / wheels as planter is lowered.

I care for the bleeders like restriction bleeders on a vehicle, get a deep ( 3/8 or vii/16 ? ) 6 point socket to fit over the bleeder and only attempt and barely tighten 1st to meet if it volition suspension loose.

If the bleeders are seized, just BE SURE TO Save PRESSURE of hydraulic organisation Earlier ATTEMPTING TO APPLY Rut !!!!!, so, best to remove the supply line, and bleed the cylinders of oil.

One time they are loose, and so go along to bleed. I use a piece of clear tubing that fits snugly over the bleeder and so drop that tube ( I think mine is like 18" long ) into a can or saucepan.
I actually like to become as far equally remove each 1 and either supervene upon if rusty ( they dont cost that much ) and apply nevr sieze to the threads.

Now use a wrench and bleed the system, you lot will easily see the bubbling and foam, and bleed till gone.

Some other thing I check...lube the bike lift artillery pivots and the lift cylinder pivot pins, sometimes when those get dry / rusty, especially when planter has set for a while, you can go plenty friction / bounden that the planter tin struggle lowering correctly, thus making bleeding more difficult.

Later thorough bleeding, I'll enhance and lower planter say like 15-twenty times, checking for levelness and on the larger planters like a 12 or xvi row, sometimes will bleed some other fourth dimension if at that place is some sagging. If the sagging continues and does not want to piece of work itself out, then a lot of times you have an internal leak in the system.

If the wings however desire to sag, or more than so if ane wing more than another, if information technology is a flex or front end fold planter, check the routing of hoses at the folding frame pivots, I have seen some go pulled so tight that the hoses were pinched, resulting in poor flow. This trouble can be sometimes be identified ii ways, wings going upward slow and dropping tiresome.

Besides I have meliorate luck when bleeding with warm oil versus cold oil, so let the tractor warm upward and running a jumper hose in a SCV will aid bring the temp up quicker.

More thoughts come to me as I type...the master cylinder will take screens for the hose ports, make sure they are make clean of droppings before you kickoff, specially if the master has been rebuilt, and also is a piece of cake check if having raise / lowering bug.

Make sure to reinstall the collars dorsum on the master cylinder.

Just some ideas.

Northern corn

Posted 1/three/2017 07:21 (#5740450 - in reply to #5739427)
Subject: RE: Chief cylinder 7000,7200 correct process I rephasing

Gladwin Mi

If the wheel cylinders are two fashion not just float downward. Set up the hyd period real low with clamps off main cyl and the hyd flowing and so that the planter is raising up continually. Go a five/16 for the bleeder on the top of cyls and a small hose and crack the until the oil comes out clear. Not milky beacuse of the air. statelinefarmer

Posted 1/iii/2017 16:31 (#5741584 - in reply to #5739333)
Field of study: RE: Master cylinder 7000,7200 correct procedure I rephasing

WCOH

On our 7200 12 row we but demand to bleed when something has been taken apart to let the air out. Other wise once a year or occasionally mid flavour nosotros simply remove the collars and heighten up and down holding the lever for a few seconds in each management. For some reason if I fold information technology upward every nighttime we don't need to bike. If I leave it ready spread out in the field I take to bicycle to rephase.