Operation and maintenance manual

Section 210-0005
SM 2154 Rev 1 10-03
5
SM - 2772B
Cooling System - Brake Cooling System Schematic
REAR AXLE
BRAKE PACKS
CENTRE AXLE
BRAKE PACKS
FRONT AXLE
BRAKE PACKS
HYDRAULIC TANK
1
TO BRAKE
MANIFOLD VALVE
ENGINE
COOLING
FAN
2
3
4
5
6
7
8
PRIORITY
UNLOADER VALVE
A
Fig. 3 - Brake Cooling System Schematic - Engine Running,Brakes Charged,
Low Temperature Unloader Valve De-Energised
COMPONENTS
1 - Triple Pump
2 - Brake Coolant Tank
3 - Low Temperature Unloader Valve
4 - Pressure Relief Valve
5 - Two Speed Control Valve
6 - Disc Brake Oil Cooler
7 - Motor/Triple Pump Assembly
8 - Low Pressure Relief Valve
PRESSURE TEST POINTS
A - Brake Cooling System Pressure
COLOUR CODES
Red - Pressurized Oil
Blue - Exhaust or Return Oil
Green - Intake Oil
Orange - Pilot Pressure
Yellow - Static Oil
Intermittent Red/Blue - Brake Cooling Oil