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need help with brakes
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Byron WC in SW Wi View Drop Down
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Joined: 11 Sep 2009
Location: Wisconsin
Points: 1635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Byron WC in SW Wi Quote  Post ReplyReply Direct Link To This Post Topic: need help with brakes
    Posted: 17 Mar 2010 at 2:18pm
on my F2.  I had the master rebuilt.  I put the brake fluid in it and cracked the line where it goes into the brake tower.  I got fluid going there every stroke so I sealed that up.  Then I see that the rubber thing on top of the tower goes up and down with each stroke.  I did that several times, before my boy had to go in for a nap, but still no brakes on that side.  If that rubber thing is going up and down does that mean all is well with master/slave but something else is wrong or do I need to keep pumping it for a long time to fill up the slave?  This is my first "brake job."

Thanks for the help.
Byron
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Gordon Chance View Drop Down
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Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gordon Chance Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2010 at 4:20pm
If your brake piston is going up and down, it means that the master cylinder is pumping ahd the brake cylinder is working.  The master cylinder will only pump a certain amount of fluid.  The adjusting nut on the brake rod needs to be adjusted to get your braking action.  Adjust the nut down until the brake starts to feel hard and the pedal is down about 1/2 in its travel.  Good luck.    
Gordon
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Byron WC in SW Wi View Drop Down
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Points: 1635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Byron WC in SW Wi Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2010 at 4:28pm
Thanks for the help Gordon.  I'll give it a shot.

Byron
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Byron WC in SW Wi View Drop Down
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Points: 1635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Byron WC in SW Wi Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2010 at 4:44pm
Ok.  I went out and tightened down both sides as they both needed adjusting.  I pumped the bad side and nothing.  Checked the fluid and it was gone.  Put more in and pumped and fluid is coming out the drain hole in the bottom.  So how do I get the slave out of there.  I started loosening the top nut but thought I better ask first.
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Byron WC in SW Wi View Drop Down
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Joined: 11 Sep 2009
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Points: 1635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Byron WC in SW Wi Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2010 at 11:19pm
Might try and combine tomorrow without that brake.  I've got 19 acres of corn from last year yet.
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7060 View Drop Down
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Points: 1148 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 7060 Quote  Post ReplyReply Direct Link To This Post Posted: 17 Mar 2010 at 11:39pm
I dont know anything about a gleaner combine, but if you let the reservoir run out you will get air in the lines and have to bleed the lines out.
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Points: 5 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Gordon Chance Quote  Post ReplyReply Direct Link To This Post Posted: 18 Mar 2010 at 7:44am
Remove the adjusting nut from the rod, remove the brake line from the brake cylinder, remove the four bolts attaching the brake cylinder to the brake assembly and remove the cylinder.  The brake piston will push out of the top.  Good luck.
Gordon
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Byron WC in SW Wi View Drop Down
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Joined: 11 Sep 2009
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Points: 1635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Byron WC in SW Wi Quote  Post ReplyReply Direct Link To This Post Posted: 18 Mar 2010 at 10:34am
Thanks Gordon.  I was afraid if I took that adjusting nut off it'd fall down in or something. 

Byron
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Byron WC in SW Wi View Drop Down
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Points: 1635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Byron WC in SW Wi Quote  Post ReplyReply Direct Link To This Post Posted: 18 Mar 2010 at 2:42pm
So I took the adjusting nut off and the the four nuts off got that thing off.  Now how do you get it apart?  You say the brake piston pushes out the top.  How would one do that?  It seems it's solid on the bottom side and there's what appears to be a cap on top but no apparent way to get a hold of it.

Thank you for the help.
Byron
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Byron WC in SW Wi View Drop Down
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Joined: 11 Sep 2009
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Points: 1635 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Byron WC in SW Wi Quote  Post ReplyReply Direct Link To This Post Posted: 18 Mar 2010 at 3:02pm
Ok, I got it out.   Looks like the lower O-ring is bad.  Thanks a ton for the help.

Byron
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Russ-neia View Drop Down
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Points: 489 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Russ-neia Quote  Post ReplyReply Direct Link To This Post Posted: 18 Mar 2010 at 3:04pm
If the F2 brake is like the FKS we had, it is a Bendix (combination disc brake/contracting shoe with balls and ramps) like a Series III/IV D-17.  I think you need to take the one side cover off to make sure the slave piston is actually pinned to the contracting shoes and that the shoes still have some lining left.  If your piston is traveling very far but not coming under load, I would bet a pin has come out.
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