"rob" > wrote in message
...
> hey Glen, 2003 Grand caravan. friend has one with front brakes
bad.....wife
> driven so who knows....lol anyway 44,000 mi, fried pads, rotor, broke
the
> piston in the left front caliper. he was told the piston doesn't come
> separate.....so he changed out the entire caliper. pedal goes to floor
> obviously until bled but he bled it 12 ways to Sunday, still went to the
> floor and has no more time to work on it, so took it to the dealer.
>
> Now they attempted to bleed the entire system, and got the same results.
> They attempted to order a master cyl. but got a red flag asking for call
to
> tech. After they called and stated what was going on, the guy at tech
> said.......let me guess, the left front caliper was replaced, wasn't it?
> after telling him yes, he proceeded to tell the dealership person that
> there's an issue with the 2003's. if you get air in the system, it
destroys
> the hydraulic assist unit and it must be replaced. So they ordered it, and
> told my friend they would have it done tomorrow. He called me tonight and
> asked if I had heard of a hydraulic assist module. I hadn't, but not
> turning wrench full time anymore, so there's lots of new stuff out there
I'm
> unfamiliar with. he states 900.00 including labor to replace it and turn
> the rotors.
>
> any ideas what this unit is they are replacing for him ?
>
>
There was an issue on the hydraulic assembly that would cause air to get
into the left caliper all the time and replacement of the hydraulic assembly
was the fix. But you say a brake job was done and the calipers were
replaced, there would be no need to replace the hydraulic assembly for that
reason.....it was not letting air get into the caliper......the person that
installed them got air in it, there fore why would the hydraulic assembly
need replacing????
The system needs to be bled with the scan tool that is the only way I have
had any luck with removing air from that system. someone better call the
Chrysler star center back up and talk to a different tech and tell them that
the air was not in the system until the caliper was replaced, and I bet you
get a different answer......and that would be to not replace the hydraulic
unit.

good luck