12
T51002 E
InstallatIon, servIce and troubleshootIng Procedures
– (PRO only) Hubcap wheel valves -
» Identified by red anodized plate inside
hubcap.
» Assumes function of tire hose check valve.
– Hubcap check valve -
» Close to isolate system and tire when tire
hoses are disconnected.
» Color and function differences between CP
and PRO:
− Silver - The CP valve allows air flow into
the tires only. The tire hose check valve
is not defeated.
− Red - Designed to hold the tire hose
check valve open while tire hose is
connected to the hubcap port. This
allows air to flow both directions for
inflation and deflation.
– Window (Includes “PRO” to identify TIREMAAX
®
PRO version.)
TIREMAAX
TIREMAAX
PRO
Figure 3:
Hubcap window example
(oil-filled PRO hubcap shown)
AXLE HOSES AND FITTINGS
• Provide an air passage from the controller, through
the axle(s), to the hubcap.
• Allows axle to remain non-pressurized.
Refer to Figure 9 through Figure 39 for a complete
description of air hoses and fittings.
SPINDLE PLUG AND GROMMET
• Provides air pressure vent (breather hole) for
wheel end during normal use and in the event of
increased pressure.
• Restrains and positions the axle hose in hubcap
and spindle.
TIRE HOSES
• Do not require modification to the standard valve
stem or core.
• Allow for manual pressure check and fill at
the hose end. Refer to MANUALLY CHECK TIRE
PRESSURE on page 46.
INDICATOR LAMP
• Provides a means for the driver to check system
status.
• Used during testing and calibration to indicate air
flow through system.
• Under some circumstances can be used to identify
a leak in the system. Refer to TROUBLESHOOTING
on page 37.
Figure 4:
Indicator lamp typical location
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