
9.1 Controls and Instruments – 9 Frame, Body, Cab and Accessories
Maintenance Manual Ottawa T2 4x2
9.1.36 Low
Air
Warning
page
–
Diagnosis
The vehicle will be equipped with one of two air braking sys-
tems. Vehicles that travel on the roads are made to comply with
the regulations in Federal Motor Vehicle Safety Standard
(FMVSS) 121. Vehicles that do not travel on the roads have an
equally reliable braking system.
An anti-lock braking system option may also be found on the
vehicle.
Components
•
Gauge Cluster
•
Headlight Switch
•
Low Air Buzzer
•
Low Air Pressure Switch (Indicator)
•
Panel Dimmer Switch (Optional)
Low Air Warning Circuit Diagnosis
9.1.38
Hourmeter
page
–
Diagnosis
Components
•
Cab Accessory Fuse
•
Gauge Cluster
•
Ignition Switch
Hourmeter Circuit Diagnosis
Observation
Cause
Action
Inoperative light and buzzer
Circuit breaker open
Reset. Replace as needed.
Short circuit
Test. Repair as needed.
Switch grounded
Test. Repair as needed.
Defective air switch
Test. Repair as needed
Defective assembly
Replace.
Inoperative buzzer, light OK
Open circuit
Test. Repair as needed.
Defective buzzer
Replace.
Inoperative light, buzzer OK
Open circuit
Test. Repair as needed.
Observation
Cause
Action
Inoperative
Circuit breaker open
Reset. Repair short as needed. Re-
place circuit breaker as needed.
Содержание Ottawa t2
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