Meritor TACTX HMIS Maintenance Manual page 2

About This Manual
This manual provides information on components, configuration
and installation, diagnostics and troubleshooting, and component
repair and replacement for the Meritor TACTX™ High-Mobility
Independent Suspension (HMIS) Height Control System.
Before You Begin
1. Read and understand all instructions and procedures
before you begin to service components.
2. Read and observe all Warning and Caution hazard alert
messages in this publication. They provide information that
can help prevent serious personal injury, damage to
components, or both.
3. Follow your company's maintenance and service,
installation, and diagnostics guidelines.
4. Use special tools when required to help avoid serious
personal injury and damage to components.
Hazard Alert Messages and Torque
Symbols
WARNING
A Warning alerts you to an instruction or procedure that
you must follow exactly to avoid serious personal injury
and damage to components.
CAUTION
A Caution alerts you to an instruction or procedure that you
must follow exactly to avoid damage to components.
ICD Interface Control Document: A description of the hardware and software interfaces
required to control the device specified in the document.
CAN Controller Area Network: Robust communication networks based on Bosch's CAN
2.0B specification.
ECU Electronic Control Unit: The central processor for control of the I/O and communica-
tion functions.
SHC Suspension Height Control: The mechanical and electrical hardware and software
providing the capability to raise or lower the vehicle height.
PCU Pneumatic Control Unit: The electro-pneumatic device with integrated electronics to
apply or exhaust pressure from air springs based on commands received over CAN.
HMI Human-Machine Interface: This device contains controls and displays, which allow
the operator to interact with systems on the vehicle.
Prime Mover This is the main vehicle, sometimes called the tractor.
SHC-PCU Suspension Height Control Pneumatic Control Unit: SHC Controller with integrated
PCU hardware.
SCD System Configuration Document: This document specifies the particular configuration
of components in the system per specific vehicle requirements.
Meritor Maintenance Manual MM-0997
Definitions, Acronyms and Abbreviations
How to Obtain Product and Service
Information
On the Web
Visit Literature on Demand at meritor.com to access and order
product, service, aftermarket, and warranty literature for
Meritor's truck, trailer and specialty vehicle components.
Literature on Demand DVD (LODonDVD)
The LODonDVD contains product, service and warranty
information for Meritor components. To order the DVD, visit
Literature on Demand at meritor.com and specify TP-0742.
(Revised 12-09)