12.1 Air System and Brakes – 12 Common Pneumatics
Maintenance Manual Ottawa T2 4x2
mm mm mm mm mm mm
12 Common Pneumatics
12.1
Air System and Brakes
page
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Description
The main function of the vehicle air system is to provide com-
pressed air to operate the brakes. Compressed air also oper-
ates the cab suspension, driver’s seat suspension and posture
features, fifth-wheel unlatching, trailer brakes and optional in-
teraxle lockout.
12.1.1 Diagnosis
page
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Brakes — Air System
A DOT/EPA system includes three reservoirs: primary, front
and rear.
Components
•
Air Compressor
•
Air Control Valve
•
Air Dryer (Optional)
•
Antilock Modulator Valve (Optional)
•
Automatic Slack Adjusters
•
Bobtail Proportioning Relay Valve (Optional)
•
Brake Valve (treadle)
•
Check Valve
•
Double Check Valve
•
Front Brake Chambers
•
Governor
•
Low Pressure Indicator
•
Pressure Protection Valve
•
Pressure Relief Valve
•
Quick Release Valve
•
Rear Brake Chambers
D A N G E R
Only trained air brake technician must be allowed to
service the air brakes. Failure to heed this danger
could result in severe personal injury or death.
Summary of Contents for Ottawa t2
Page 1: ......
Page 47: ...38 0 8 Electrical Instruments 0 Machine Complete Maintenance Manual Ottawa T2 4x2 ...
Page 53: ...44 1 11 Start Stop 1 Engine Maintenance Manual Ottawa T2 4x2 ...
Page 55: ...46 2 Transmission Maintenance Manual Ottawa T2 4x2 ...
Page 57: ...48 3 Driveline Axle Maintenance Manual Ottawa T2 4x2 ...
Page 73: ...64 5 4 Diagnosis Hydrostatic Steering 5 Steering Maintenance Manual Ottawa T2 4x2 ...
Page 81: ...72 7 11 Diagnosis Boom 7 Load Handling Maintenance Manual Ottawa T2 4x2 ...
Page 83: ...74 8 Control System Maintenance Manual Ottawa T2 4x2 ...
Page 145: ...136 11 2 Safety 11 Common Electric Maintenance Manual Ottawa T2 4x2 Chassis Power Board ...
Page 153: ...144 12 5 Air Dryer 12 Common Pneumatics Maintenance Manual Ottawa T2 4x2 ...
Page 155: ...146 D Error Codes Maintenance Manual Ottawa T2 4x2 ...
Page 261: ...252 0 4 Fastener Torque Values F Technical Data Maintenance Manual Ottawa T2 4x2 ...