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Hendrickson Optimaax 17730-310 Operation

Lift axle system air controller module for freightliner vehicles
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TABLE OF CONTENTS

Section 1
Introduction . . . . . . . . . . . . . . . . . . . . . .2
Section 2
Product Description . . . . . . . . . . . . . . . .2
Section 3
Important Safety Notice . . . . . . . . . . . . .4
Section 4
Definitions . . . . . . . . . . . . . . . . . . . . . . .8
Section 5
Parts List . . . . . . . . . . . . . . . . . . . . . . . .9
Section 6
Air Controller Module . . . . . . . . . . . . .10
Section 7
Wiring Diagram . . . . . . . . . . . . . . . . . .11
OPTIMAAX
Lift Axle System
®
Air Controller Module for
Freightliner Vehicles
SUBJECT: Service Instructions
LIT NO: 17730-310
DATE: January 2024
Section 8
Preventive Maintenance . . . . . . . . . . .12
Section 9
Section 11 System Operation . . . . . . . . . . . . . . . .16
Section 12 Diagnostic Tool Software . . . . . . . . . . .17
Section 13 Troubleshooting Guide . . . . . . . . . . . . .21
REVISION: F

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Summary of Contents for Hendrickson Optimaax 17730-310

  • Page 1: Table Of Contents

    OPTIMAAX Lift Axle System ® Air Controller Module for Freightliner Vehicles SUBJECT: Service Instructions LIT NO: 17730-310 DATE: January 2024 REVISION: F TABLE OF CONTENTS Section 1 Introduction . . . . . . . . . . . . . . . . . . . . . .2 Section 8 Preventive Maintenance .

  • Page 2: Introduction

    Product Description Hendrickson’s OPTIMAAX system is a 6 × 2 solution to help fleets save fuel cost, tire wear, and weight with comparable handling to 6 × 4 tandem axle configurations . Operating as a liftable axle in the for- ward tandem position, this system provides versatility for fleets with variable loads .
  • Page 3 OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® FIGURE 2‑1 Air Controller Manifold FIGURE 2‑2 Electronic Control Unit (ECU) FIGURE 2‑3 Air Controller Wiring Harness (Supplied by Freightliner) Vehicles built after October 1, 2019 Freightliner Part No . A06-95748-777 HARN-AXLE-LIFT, OL, CHAS F, HDR Freightliner Part No .

  • Page 4: Important Safety Notice

    Important Safety Notice Proper maintenance, service, and repair is important for the reliable operation of the suspension . The procedures recommended by Hendrickson and described in this technical publication are methods of performing such maintenance, service, and repair . This technical publication should be read carefully to help prevent personal injury and to assure that proper methods are used .
  • Page 5 HELP PREVENT PERSONAL INJURY WHEN PERFORMING VEHICLE MAINTENANCE, REPAIR OR SERVICE . MODIFYING COMPONENTS DO NOT MODIFY OR REWORK PARTS WITHOUT AUTHORIZATION FROM HENDRICKSON . DO NOT SUBSTITUTE REPLACEMENT COMPONENTS NOT AUTHORIZED BY HENDRICKSON . USE OF MODIFIED, REWORKED, SUBSTITUTE OR REPLACEMENT PARTS NOT AUTHORIZED BY HENDRICKSON MAY NOT MEET HENDRICKSON’S SPECIFICATIONS, AND CAN RESULT IN FAILURE OF THE PART, ADVERSE VEHICLE HANDLING,...
  • Page 6 NOTE REPLACE ANY SAFETY DECALS THAT ARE FADED, TORN, MISSING, ILLEGIBLE, OR OTHERWISE DAMAGED . CONTACT HENDRICKSON TO ORDER REPLACEMENT LABELS . LIFT AXLE RAPID AUTOMATIC MOVEMENT LIFT AXLE RAPID, AUTOMATIC MOVEMENT CAN CAUSE SEVERE PERSONAL INJURY OR DEATH .
  • Page 7 WHEN THEY ARE UNRESTRICTED . AIR SPRING ASSEMBLIES MUST BE RESTRICTED BY SUSPENSION OR OTHER ADEQUATE STRUCTURE . DO NOT INFLATE BEYOND PRESSURES RECOMMENDED BY AIR SPRING MANUFACTURER, CONTACT HENDRICKSON TECHNICAL SERVICES FOR DETAILS . IMPROPER USE OR OVER INFLATION MAY CAUSE AIR SPRING ASSEMBLIES TO BURST, CAUSING PROPERTY DAMAGE AND / OR SEVERE PERSONAL INJURY .

  • Page 8: Definitions

    OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® SECTION 4 Definitions DEFINITIONS Auxiliary Power Unit A bobtail truck is a semi-truck that travels from one point to another Bobtail Condition without a trailer . CAN BUS Controller Area Network Bus CAN Wires Controller Area Network Wires Diagnostic Tool Software...

  • Page 9: Parts List

    OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® SECTION 5 Parts List VEHICLE TORQUE PART NO. DESCRIPTION QUANTITY VALUE *OPTIMAAX Air Controller Module, Includes Key Nos . 2-3, 8, 11, 093267-0XX Replaces 080924-0XX and 080692-0XX 060905-051 Warning Decal Electronic Control Unit (ECU), Includes Key Nos .

  • Page 10: Air Controller Module

    OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® SECTION 6 Air Controller Module INSTALLATION ASSEMBLY 1 . Prior to installation of the air controller module, refer to Cautions and Warnings in the Important Safety Notice section of this publication DO NOT WORK ON THE VEHICLE ELECTRICAL SYSTEM WITH THE VEHICLE POWER ON .

  • Page 11: Wiring Diagram

    *093265-010 *20,000 *21,000 * No longer available, contact Hendrickson for a replacement part . ** Replaces part number 080925-0XX . THE ADDITION OF WEIGHT TO THE VEHICLE (APU - AUXILIARY POWER UNIT, CHAINS, ETC .) MAY CHANGE THE CORRECT OPTIMAAX DEPLOYMENT THRESHOLD AND MAY REQUIRE REPLACEMENT OF THE ECU . FAILURE TO DO SO WILL OVERLOAD THE LIFT AXLE .

  • Page 12: Preventive Maintenance

    3 . The displayed pressure in the Diagnostic Tool Software must match pressure gauge measurement within ± 5 PSI . If not, the air controller manifold must be replaced . 4 . Repeat Steps 2 and 3 for the lift port . FIGURE 8‑1 Hendrickson OPTIMAAX Diagnostic Tool File Tools Help...

  • Page 13: Air Controller Manifold Diagram

    6 . A spring is used to retain a mesh filter on DRIVE and SUPPLY ports . These must be retained when PTC fittings are installed (not supplied by Hendrickson) . The mesh filter helps to prevent debris from entering the system .
  • Page 14 OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® FIGURE 9‑2 Air Controller Manifold Diagram 17730-310...

  • Page 15: Section 10 Vehicle Air Plumbing Diagram

    OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® SECTION 10 Vehicle Air Plumbing Diagram 17730-310 Vehicle Air Plumbing Diagram...

  • Page 16: Section 11 System Operation

    OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® SECTION 11 System Operation Prior to operating the system, refer to Safety Precautions in the Important Safety Notice section of this publication . The OPTIMAAX is designed with features to detect a fault in the system operation which is separate ■...

  • Page 17: Section 12 Diagnostic Tool Software

    This Diagnostic Tool Software works with a laptop equipped with a 32-bit or 64-bit Windows  XP, Vista, ® and Windows 7, 8, and 10 operating systems . Hendrickson provides access to software through NEXIQ, www .nexiq .com . THE DIAGNOSTIC TOOL SOFTWARE It is used to communicate with the lift axle controls .
  • Page 18 OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® FIGURE 12‑2 Hendrickson OPTIMAAX Diagnostic Tool File Tools Help Select a COM Port from the pull down menu. There may be more than one com port available. Pick one, and click Open FIGURE 12‑3...
  • Page 19 OPTIMAAX Lift Axle System Air Controller Module for Freightliner ® FIGURE 12‑5 Hendrickson OPTIMAAX Diagnostic Tool File Tools Help Digital #2 represents the parking brake signal FIGURE 12‑6 Hendrickson OPTIMAAX Diagnostic Tool File Tools Help Click on the History Click here to...
  • Page 20 CLOSE button on the START tab to terminate communication with the lift axle ECU, see Figure 12-7 . Exit the window, see Figure 12-7 . FIGURE 12‑7 Hendrickson OPTIMAAX Diagnostic Tool File Tools Help STEP 3 Exit window STEP 2...

  • Page 21: Section 13 Troubleshooting Guide

    . . Mechanical components are Refer to the Troubleshooting Guide section in damaged Hendrickson Literature No . 17730-309 . Manifold is damaged Replace the manifold . Diagnostic Tool Software was Exit the Diagnostic Tool Software by pressing the “Close”...
  • Page 22 Verify the PTC fittings are not leaking . connects, no ECU Manifold is damaged Replace the manifold . Current Faults reported Mechanical components are Refer to Troubleshooting Guide section in Hendrickson Loss of traction when damaged Literature No . 17730-309 . axle deployed Diagnostic Tool Software...
  • Page 23 Fault detected . Axle will not diagnosis . Refer to warning light Mechanical issue prevents retract Hendrickson Literature No . is flashing lift axle from deploying . 17730-309 to diagnosis mechanical issue . Drive axle pressure sensor Wiring harness is...
  • Page 24 17730-310 Rev F 01-24 © 2018 – 2024 Hendrickson USA, L.L.C. All Rights Reserved. All trademarks shown are owned by Hendrickson USA, L.L.C., or one of the affiliates, in one or more countries. Information contained in this literature was accurate at the time of publication. Product changes may have been made after the copyright date that are not reflected.

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