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Old 05-11-2016, 05:21 PM   #1
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Default Clutch or trans ??????

So the other day my 87 started acting up it got nearly impossible to shift into any gear tried to bleed the master, slave but nothing it will now go into 1,2,3,4,5 with a little effort but will just grind when trying to go in reverse I just don't know if it's the clutch that went out or the tranny?
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Old 05-11-2016, 11:25 PM   #2
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was the throwout fork moving after you bled the system?
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Old 05-12-2016, 07:23 AM   #3
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Yes it was to its full extend
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Old 05-12-2016, 12:07 PM   #4
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Any funny noises when you press on the clutch pedal? If you just start the truck can you put it in first gear and then reverse without it grinding or will it grind no matter what you do?
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Old 05-12-2016, 12:28 PM   #5
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When clutches go bad, they slip. If a pressure plate breaks, it can drag and cause that. Most likely the problem is in the master cylinder or slave.
I once had a slave that went bad, but never leaked a drop. Wouldn't bleed, either.

Check for loose bolts where the bell housing meets the engine. I've had that happen.
Try pumping the pedal a few times before trying to shift. See if that improves it. If so, replace the mc and slave.
Make sure the carpet and mat are not in the way.

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Old 05-12-2016, 12:45 PM   #6
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I had this problem last year, I changed the entire hydraulics (Master cylinder, Slave, Damper delete) still didnt solve, ended up being broken teeth on the pressure plate and broken spring on the clutch assembly.

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Old 05-12-2016, 12:52 PM   #7
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The "pump the pedal" test will give the best clue. If everything is tight, and nothing blocking the pedal stroke, of course. If pumping doesn't help, then the pp is suspect.
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Old 05-12-2016, 02:22 PM   #8
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Thanks for the help guys The master cylinder and slave are brand new I'm going to do the damper delete this morning I'll let you guys know how it goes.
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Old 05-12-2016, 02:39 PM   #9
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If you have the clutch pedal fully engaged you shouldnt be able to push the slave cylinder rod in if everything is good hydraulic wise. If that is the case it will most likely be the clutch assembly.
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Old 05-12-2016, 06:53 PM   #10
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Something else to look for before pulling the clutch: check the pivot point for the clutch fork. I had mine break off and the clutch did some weird stuff. Agree with the others though, see if pumping helps, good odds of pressure plate issues. Transmission should be fine internally though, so good new there. That pivot bolt is cheap too if it's that as well.
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