Hi All, I just received my Motive Power Bleeder and am ready to change out my clutch fluid - '83 944. What is the best pressure to use on the bleeder? Don't want to damage anything. Thanks in advance! Looked for a write up on the procedure but did not find one.

 

I use 10-15 psi.

 

Yeah, I use 15 psi and pump it back up once it gets down to 10.

 

What they said. And enjoy the ease of use!
You might also consider using a different color fluid. It just makes it easier.

 

How much fluid do you usually need for a thorough flush?

 

My '87 944 took a little more than 3/4 of a can of ATE Superblue, which is 1Liter i believe. That was clutch and all four calipers/

 

So I guess I don't need the entire 5 liters of super blue I have stacked up for the job?

 

Got mine in from Paragon today, woohoo!

 

FWIW, some people don't even put fluid IN the power bleeder, i.e., they simply fill the reservoir and use the bleeder for air pressure only. Keeps the Motive new and clean.

Of course, for a full flush job, you will probably have to refill the reservoir a couple of times, but since there's only air in the bleeder and hook up hose, there's no mess.

Just an idea, either way works.

 

DO disconnect the negative battery lead, lest you want to discover the hot side of the starter lead with a little 7mm wrench.

I also prefer 10-15 psi. You can use higher pressure, but I think it's kinda risky on 20+ year old plastic brake fluid reservoirs.

1 Liter is usually enough to flush the whole system to new (all four corners + clutch).

Also, be patient with the clutch slave and don't loosen the bleed screw TOO much. You CAN suck air back into that thing and turn a 30-minute job into a a 2-hour job (ask me how I know).

Motive is THE BOMB!

 

How do you know?

Yo Dave, why are you not running at Road America this weekend? We could use a few more Porsche's:

http://roadamerica.fbody.us/

 

Thanks to all who replied. I ended up starting this late last night. Although my slave cylinder seemed to still hold pressure, I noticed quite a bit of fluid in the area (near starter and slave). I guess the slave was not completely shot, but it was leaking and well on its way. I noticed on cold mornings my clutch would sometimes stick to the floor. Apparently, the slave cylinder really leaked when the temperature was cooler (expansion and contraction is my guess). Luckily I had purchased a slave cylinder and was able to get everything back together. (I know, I know many will tell me I need to do the master cylinder also)

One note, I had a heck of a time threading the master to slave "line" back into the slave cylinder. At one point I thought I had stripped the threads. Finally, I had to put the line on to the slave first then bolt the slave on.

 

Been there, done that!

 

Ah, I wish I could've been spinning around RA this weekend. Alas, I have a small mechanical issue that is being attended to.

So, about the 3rd time I bled the clutch on the 944... I pull the bleed screw out a tad too far... pressure in the Motive drops down a bit too much...

... I get to spend an hour or so "gravity bleeding" that stupid thing... pump another 1/2 liter of Ate Blue through there... finally get the pedal back. Not fun.

Yup, I sparked that little wrench right in my face once. The operative word is once, right?

Learning the hard way can be a little scarey