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7020 transmission brake
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Blustery Knoll Farm View Drop Down
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Joined: 04 Dec 2017
Location: Northern IL
Points: 117 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Blustery Knoll Farm Quote  Post ReplyReply Direct Link To This Post Topic: 7020 transmission brake
    Posted: 30 May 2019 at 10:26pm
My 7020 grinds going into gear cold. What is the appropriate way to adjust the transmission brake?

I have loosened the clamp on the clutch cable and pulled out all the slack and it still grinds. Am I not adjusting it properly, or is the trans brake bad?
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8729 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2019 at 10:38pm
My 8070 has always tried to grind cold. I just wait a little longer to try and shift it. I think it might be normal. Warmed a little and it's fine.
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Blustery Knoll Farm View Drop Down
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Points: 117 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Blustery Knoll Farm Quote  Post ReplyReply Direct Link To This Post Posted: 30 May 2019 at 10:59pm
I'd think it was normal, except my 7040 will stop the tractor if it is in gear and I push the clutch pedal to the floor. It never grinds, as long as I push the pedal to the floor.
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Moneypit View Drop Down
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Points: 81 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Moneypit Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 1:37am
Replace the ends on the cable and maybe the cable. If there is to much wear in the ends it'll grind
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MACK View Drop Down
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Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 6:51am
Replace pivot bushing and pin. Make sure there is not a thick rug under clutch pedal.        MACK
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Lonn View Drop Down
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Joined: 16 Sep 2009
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Points: 29817 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lonn Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 7:07am
On my brother's 7030 the pin and bushings didn't look bad but after I replaced them the problem was solved. That's where I'd look next.
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Blustery Knoll Farm View Drop Down
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Points: 117 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Blustery Knoll Farm Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 8:01am
How far is the spool supposed to come out of the valve body when fully depressed? Pivot bushing is tight.

There's no rug in the cab, so that's not the problem.

Edited by Blustery Knoll Farm - 31 May 2019 at 8:02am
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DrAllis View Drop Down
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Points: 22300 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 8:19am
Whenever I repaired a trans brake complaint, it was ALWAYS replace the two fork pivot bushings and the ball joint on the end of the cable, spray WD40 all over everything and adjust the cable to proper length (pull hard forward on the cable and tighten the U-bolt). If you still have trouble after doing all that, there is potentially a warped clutch disc/plate or tranny brake issue.
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Blustery Knoll Farm View Drop Down
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Points: 117 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Blustery Knoll Farm Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 9:27am
Previous owner said that he replaced the bushings a bit over a year ago. They feel tight.
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DrAllis View Drop Down
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Points: 22300 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 10:00am
Adjust the cable 1/8" TIGHTER yet. May have to use a prybar of some sort. Oil everything.
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Blustery Knoll Farm View Drop Down
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Points: 117 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Blustery Knoll Farm Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 10:51am
I adjusted it 1/8" shorter so that the fork was actually moving the plate on the spool a bit and there's no change.
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Joined: 16 Sep 2009
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Points: 29817 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Lonn Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 2:39pm
warped plates IMO
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Blustery Knoll Farm View Drop Down
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Points: 117 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Blustery Knoll Farm Quote  Post ReplyReply Direct Link To This Post Posted: 31 May 2019 at 8:34pm
I guess I'll live with it for a while then. Just wanted to rule out adjustment as the culprit first. It works fine once it is warmed up.
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