QXQQ

Front suspension

Conventional Alfa double wishbone. Uses a rigid lower arm, and a flexible upper one to give excellent handling with acceptable refinement. A torsion bar attached to the lower arm provides the springing, and makes ride height adjustment a possibility. Wheel bearings are adjustable taper-roller.
My car seems to have suffered quite severe wear at the [...]

Brake balance valve
The braking system is dual-circuit, split front to rear.
The balance valve is there to reduce the pressure to the rear brakes, as well as allowing the front brakes to work if the back loses pressure.

The balance valve is located next to the master cylinder. If you place your finger over the rubber end-cap [...]

Rear brakes
The rear brakes are a very unusual design, first seen on the Alfetta I think. The brake calipers are inboard with dual opposed pistons, but there is a lot of extra complexity from the handbrake mechanism.
How it works:
The handbrake cable operates a cam inside each caliper to push the inner pad against the disc. [...]