<VV> Dual or Single Master Cylinder

[JVHRoberts at aol.com]

Yep, BMW 2002s had this as well. 4 piston front calipers with two pistons  
and one rear wheel on one circuit, and two pistons and the other rear wheel on  
the other circuit. Yes, two brake hoses to each front caliper. Neat, but 
unduly  complicated. 
 
 
In a message dated 12/5/2005 9:29:19 A.M. Eastern Standard Time,  
vairmike at sbcglobal.net writes:

On the  Volvo (at least our `82 240 wagon) if you had a circuit go out 
you still  had 3 wheels of braking. The front disks were a dual circuit 
design so  that you had 2 front and 1 rear on each circuit. you also had 
a separate  small drum inside the rear hub for the E-brake. I never had a 
brake line  failure in it but would imagine this setup would provide 
reasonable  stopping ability in case of emergency.

Mike  Kost