VOLVO B7R - Brake Circuit

VOLVO B7R BRAKE CIRCUIT DIAGRAM 

Compressed-Air Brake System Layout

The Compressed Air Brake System for the B7R is a duplex circuit brake system, with one circuit for the front wheel brakes and one for the rear wheel brakes. There is also a circuit for the Parking Brake and another for extra equipment

The B7R can be fitted with different compressors, the Knorr LP48 or the Knorr 213. The Knorr 213 is available only in the leaf spring version.

Main Components :

1 - Compressor
2 - Air Dryer
3 - Regeneration Tank
4 - Safety Valve, 1.8 +/- 0.08 Mpa
5 - Filler Nipple, External Air
6 - Safety Valve, 0.93 +/- 0.035 Mpa
7 - Draining Valve
8 - Test Nipple
9 - Four Circuit Protection Valve
10 - Non Return Valve
11 - Pump Nipple, Parking Brake Circuit
12 - Blocking Valve
13 - Parking Break Valve
14 - Pressure Sensor, Parking Brake Circuit
15 - Two way Valve
16 - Quick release Valve, Parking Brake Circuit
17 - Spring Brake Cylinder, Parking Brake Circuit
18 - Footbrake Valve
19 - Quick release Valve
20 - Single diaphragm cylinder
21 - Brake Light Contact
22 - Relay Valve
23 - Spring Brake Cylinder
24 - Air Sensor, Circuit Tanks
25 - Compressed-Air Outlet

P - Primary Tank      F - Air Tank, Front Wheel Circuit     R - Air Tank, Rear Wheel Circuit