Bleeding the clutch on a zf6

[kadeninabnitt]

Just finishing my zf6 swap in my obs. im having a hell of a time getting the clutch bled with no bleeder. Anyone have any tips or tricks to bleed it? ive tried the pump the slave trick for the past 2 days to no avail Its a new master cylinder and a new slave and a new hydraulic line. Does anyone out there make a slave cylinder with a bleeder? It doesnt seem like it would have been a big deal to put one on the slave.

 

[Magnum PD]

As in, you pushed in the slave cylinder as far as you can?

 

[79jasper]

Or you could've bought a pre-bled unit.

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[mandkole]

Did you bench bleed the master? If air is trapped there you'll never get a pedal.

And yes, the pre bled assy is a time saver.

 

[co04cobra]

Did you bench bleed the master? If air is trapped there you'll never get a pedal.

And yes, the pre bled assy is a time saver.

:whs::whs:

It would probably still save you a lot of headache to just go get a pre-bled kit.

 

[JSchuricht]

He has a ZF6 and OBS. There is a good chance that a pre bled kit is not available if he is using a OBS master and SD slave which is common on swaps. To bled the system, you need to pull the slave out of the trans and pump it by hand, holding it in for 10-20 seconds or so to help get the air out.

 

[kadeninabnitt]

As in, you pushed in the slave cylinder as far as you can?

Yes the stand verticle press slave piston down hold for a few and slowly release been at that all weekend

 

[kadeninabnitt]

As for the prebled kit like mentioned above im putting this in my obs i cant yse the kit because i have to use the obs master cyl with the sd slave cyl

 

[79jasper]

You can also start it. The engine vibrations can help.

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[kadeninabnitt]

Might try that it'll be the weekend before i can attack it again

 

[97strokerHD]

Why can't the SD master be used? Asking because I really don't know.

 

[JSchuricht]

The SD master requires more fabrication. The OBS master just drops in place like it was meant to fit there.

 

[wadeclinton]

I recently completed a ZF6 conversion, and was able to bleed my system fairly easily. I assembled the master, hose, and slave. Clamped the master in a vise and allowed the slave to dangle. I followed the pump and wait procedure as described in the SD shop manual. I spent 5-10 min total. It worked the first time. I'm not sure what else to recommend.

 

[Patrick Feeley]

If you are trying to bleed by hand-cycling the slave with everything in the truck, try disconnecting the master's rod from the pedal linkage and then do it. It sounds stupid, but it worked for me once I did that. Cheers!

 

[97strokerHD]

Is there any way if I did this swap would I be able to bolt my factory transfer case to the zf6? Interchangeable tailshaft housing or something like that?

 

[kadeninabnitt]

Well i got it bled finally. unhooked the line from the slave vacuum bled the master and filled the slave with fluid before installing the line. all is good other than a severely out of balance driveshaft off to the shop to get a one piece made.

 

[kadeninabnitt]

Is there any way if I did this swap would I be able to bolt my factory transfer case to the zf6? Interchangeable tailshaft housing or something like that?

Nope a zf6 tcase is required different spline count and spline diameter