Operation and maintenance manual

Section 250-0000
SM 2155 Rev 1 10-03
7
Fig. 3 - Braking System Schematic - Engine Running, Brakes Off
SM - 2765B
COMPONENTS
1 - Triple Pump
2 - Brake Manifold Valve
3 - Parking Brake Pressure Switch
4 - Brake Circuit Pressure Switches
5 - Brake Accumulators
Braking System - Braking System Schematic
6 - Treadle Valve
7 - Stop Light Pressure Switch
8 - Directional Control Valve
9 - Brake Accumulator
10 - Priority Unloader Valve
PRESSURE TEST POINTS
A - Front Brake System Pressure
B - Rear Brake System Pressure
C - Brake System Pressure
COLOUR CODES
Red - Pressurized Oil
Blue - Exhaust or Return Oil
Green - Intake Oil
Orange - Pilot Pressure
Yellow - Static Oil
8
T
P
a
b
B
PX
P1
T1
P2
B1
B2
T2
A
C
B
55
P
A
3
6
7
4
2
B
PY
ACC1
TO PILOT SUPPLY
VALVE PORT 'P1'
(BODY SYSTEM)
ACC2
P2
P1 T
PS2
PS1
A
PS3
REAR AXLE
SERVICE BRAKES
PARKING BRAKE
CENTRE AXLE
SERVICE BRAKES
FRONT AXLE
SERVICE BRAKES
HYDRAULIC TANK
TO ENGINE
COOLING CIRCUIT
TO BRAKE
COOLING CIRCUIT
TO ENGINE
COOLING CIRCUIT
10
REF. COOLING
SYSTEM
1
9
4