ZF6 clutch issues, hard to shift (hard reverse/1st gear)????

[Superstroker127]

Been having issues with my tranny it seems to be decent when its cold but after driving down the highway a while its very notchy. The throwout bearing makes lil noise when clutch is engaged. No bad sounding noises have developed yet but truck creeps in gear with clutch peddle fully depressed (only sometimes)and is nearly impossible to get in first or reverse to start from a stop. Im having to upshift and downshift matching RPM and Speed perfectly. I replaced the slave and master and trans fluid 3000 miles ago with no luck. Any help would be greatly appreciated thanks.

[mfd620]

Mine was like that when i got it. I replace the little plastic peace that the mastercylinder rod connects to the pedale and no more issues. Its like a $6 part. Worth a shot for the price.

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[Superstroker127]

The new master came with one so Idont think it would be that, I checked it earlier today as well its still intact

[mfd620]

Does the pedale have any play when first pushed ?

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[Schnot]

Sounds like clutch is bad to me. Time for a southbend


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[Superstroker127]

pedal has lil play, but there is no play on the eyelet of the master cylinder pushrod itself the whole thing (rod and pedal move as one) only if i pull the pedal backwards i have some play but the helper spring has also been removed from behind the pedal

[Diesel Addict]

I'm not sure how it is on the earlier superduties, but on my 06 the master cylinder mount on the firewall is plastic, I was having the same issue when I installed my southbend. I called them and they directed me to liberator performance. They make a bracket that goes on the firewall over the plastic mount. They claim that the mount flexes and you lose some clutch throw, just enough to make it tough to shift. I ordered one but have not gotten around to installing it yet. Not sure if thats the same issue your having or not.

[Superstroker127]

I see what your sayin, but I think im leaning more towards the throwout bearing or pilot bearing causing the issue.....
can anyone reinforce that here?

[Superstroker127]

bumpy bump
someones gotta help me here !!!!!

[jdparadee]

bump for this as well, i am having the same problem, it only happened to me once, but my dad said it has been happening to him a lot. he said after it warms up it won't go into reverse. could it be a fluid issue? that would make sense since it occurs with heat and fluid gets more viscous. but i don't know, someone else said it could be a synchro but i would assume that it would cause more of a grinding than a failure to engage into the gear. any ideas? i need this fixed for when i get home. thanks