4-38 CONTROLS AND INSTRUMENTS
PA1628 H3-41, H3-45 Operator’s Manual
WARNING
Failure to take necessary action when the STOP telltale
light is on can ultimately result in automatic engine
derate and shutdown.
06737
Front Brake Air Pressure Gauge (Secondary System)
Indicates the front brake air system pressure in psi. The normal
operating pressure is from 122 to 140 psi.
The
low air pressure
indicator LED on the gauge and the
STOP
telltale light illuminates when the front brake air system
(secondary) pressure drops below 85 psi. An audible alarm will
sound.
STOP telltale light
WARNING
The driver is responsible for monitoring the pressure as
part of a regular sweep of the instruments.
If the pressure drops in the secondary system but
remains normal in the primary system, the front axle
service brakes will not function but the drive and tag axle
service brakes will operate normally, although if there is a
leak in any pneumatic system (Sec/Pri/Park/Acc), the
primary system might eventually lose its air pressure as
well, depending on the nature and size of the leak. In the
event of any air pressure loss in any system, the driver
should pull to the side of the road as soon as can be
safely done and investigate the situation.
Do not drive the coach when the brake air pressure is low.
Rear Brake Air Pressure Gauge (Primary System)
06738
Indicates the rear brake air system pressure in psi. The normal
operating pressure is from 122 to 140 psi.
The
low air pressure
indicator LED on the gauge and the
STOP
telltale light illuminates when the rear brake air system
pressure drops below 85 psi. An audible alarm will sound.
Summary of Contents for H 2018 Series
Page 1: ...COACH MANUFACTURER OPERATOR S MANUAL H SERIES COACHES PA1628 January 2018 ...
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Page 217: ...TECHNICAL INFORMATION 9 5 PA1628 H3 41 H3 45 Operator s Manual H3 45 OVERALL DIMENSIONS 18525 ...
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