Durametric transverse and longitudinal solenoid bleeding.

[Maych87]

This topic has been brought up many times on the internet. Unfortunately there are no conclusive answers. I would appreciate if you only answer the thread if you have first hand experience bleeding the transverse and longitudinal slave lock with the durametric tool.

I am trying to bleed both slave lock cylinders but am having issues. Attached is the picture of the durametric options. It says brake bleeding which I am assuming is wrong and is supposed to be the longitudinal lock or I am in aware of what this function does. I use the motive pressure bleeder to do the rest of the brake bleeding components. Then it says transverse lock which I am assuming is supposed to be the transverse lock.

From the Adrian streather porsche 911 enthusiasts companion it says using a Bosch hammer you open the bleeder on the slave cylinder lock, then activate it through the hammer, it should pump out about 250ml and it’s done. Then repeat on the second lock.

I tried this.

I cracked the bleeder on the transverse lock and activated it on the durametric and got one squirt of fluid. I then tried activating the brake bleed button as I was unsure what it did and I could here the solenoid clicking in the front trunk and I was getting squirts of fluid coming out of the transverse lock.

Maybe I am supposed to do this with the pressure bleeder on? I am assuming it is supposed to be a steady stream. It’s hard to tell if there is air in the system when it’s pulsing out fluid. But maybe that’s how it’s supposed to be.

If anyone has done this on the durametric version 6 and got it to work please let me know what the sequence was and what they are talking about when they say brake bleeding.

As I’m writing this I am wondering if the dual solenoid block is plugged in backwards. I’m not sure if that is possible. I will have to check tomorrow.




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[wilson234]

It’s been several years since I rebuilt my slaves, but I didn’t use any fancy tools, I believe I just activated the lock switch, similar to pressing the brake pedal. On, open, close, off switch, repeat. Been trouble free for years.

[TorqueHead]

I know it has been a year since this thread was active but the OP's question remains unanswered and I have the exact same question. A phone call to Durametric was unhelpful and an exhaustive internet search was inconclusive.

I hope that in the meantime someone has used the Durametric cable and software to bleed both the locks on a 964 C4. If anyone can confirm if it can or can't do this, I would greatly appreciate it.

[zaffer]

I know it's been a few years since the last response, but I figured I'd post my findings here.

Concerning bleeding the solenoids, I used the "Brake bleeding" function to bleed them and not the "Transverse lock" function and the system bled fine. The pump was going constantly, but once I bled the lock at the transaxle, the system built up pressure and the pump turned off. This was after replacing the pressure sensor.