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Hendrickson PRIMAAX EX User Manual

Hendrickson PRIMAAX EX
60 pages
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PRIMAAX
®
EX / PRIMAAX
®
for
Volvo Vehicles
SUBJECT: Service Instructions
LIT NO: 17730-254
DATE: March 2012 REVISION: B
TABLE OF CONTENTS
Section 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
Section 2 Product Description . . . . . . . . . . . . . . . . . 2
Section 3 Important Safety Notice . . . . . . . . . . . . . . 4
Section 4 Special Tools . . . . . . . . . . . . . . . . . . . . . . . 9
Section 5 Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . 12
PRIMAAX EX . . . . . . . . . . . . . . . . . . . . . . . . . 12
PRIMAAX . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Section 6 Preventive Maintenance. . . . . . . . . . . . . 16
Areas of Inspection . . . . . . . . . . . . . . . . . . . 16
Hendrickson Recommended
Preventive Maintenance Intervals . . . . . . . . 16
Component Inspection . . . . . . . . . . . . . . . . 18
U-bolt Fasteners . . . . . . . . . . . . . . . . . . . . . 19
Transverse Torque Rods . . . . . . . . . . . . . . . . 20
Longitudinal Torque Rods . . . . . . . . . . . . . . 20
Shock Absorber . . . . . . . . . . . . . . . . . . . . . . 21
Air Fitting Inspection . . . . . . . . . . . . . . . . . . 22
Section 7 Alignment & Adjustments . . . . . . . . . . . 23
Ride Height Adjustment . . . . . . . . . . . . . . . . 23
Lateral Alignment . . . . . . . . . . . . . . . . . . . . 23
Axle Pinion Angle . . . . . . . . . . . . . . . . . . . . 24
Drive Axle Alignment Inspection Procedure
(Scrub Angle) . . . . . . . . . . . . . . . . . . . . . . . 24
Alignment Adjustment Instructions . . . . . . . 26
Pinion Angle Adjustment . . . . . . . . . . . . . . . 28
Section 8 Component Replacement . . . . . . . . . . . 29
Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Height Control Valve . . . . . . . . . . . . . . . . . . 29
Air Spring . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Shock Absorber . . . . . . . . . . . . . . . . . . . . . . 31
Transverse Torque Rod . . . . . . . . . . . . . . . . . 32
Longitudinal Torque Rod . . . . . . . . . . . . . . . 32
Longitudinal Torque Rod Bushing . . . . . . . . . 33
Support Beam Assembly and Cross Tube . . . 34
U-beam Assembly . . . . . . . . . . . . . . . . . . . . 35
D-pin Bushing . . . . . . . . . . . . . . . . . . . . . . . 38
QUIK-ALIGN Pivot Bushing . . . . . . . . . . . . . . 43
Top Pad . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Bottom Cap and Axle Spacer . . . . . . . . . . . . 47
Axle Stops . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Frame Hanger . . . . . . . . . . . . . . . . . . . . . . 50
Section 9 Torque Speci cations . . . . . . . . . . . . . . . 54
PRIMAAX EX . . . . . . . . . . . . . . . . . . . . . . . . . 54
PRIMAAX . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Section 10 Troubleshooting Guide . . . . . . . . . . . . . . 58

Questions and Answers:

Hendrickson PRIMAAX EX Specifications

General IconGeneral
BrandHendrickson
ModelPRIMAAX EX
CategoryAutomobile Accessories
LanguageEnglish

Summary

Introduction

Product Description

Important Safety Notice

Explanation of Signal Words

Defines signal words like DANGER, WARNING, and CAUTION used in the manual for hazard identification.

Safety Precautions

Covers general safety rules for fasteners, load capacity, modifications, torch use, and component handling.

Specific Safety Warnings

Includes warnings related to U-beam assembly, cross tubes, shock absorbers, torque rods, and air springs.

Special Tools

QUIK-ALIGN Tool Descriptions

Details and diagrams for tools used to install and remove QUIK-ALIGN bushings.

D-Pin Tool Descriptions

Details and diagrams for tools used to install and remove D-Pin bushings.

PRIMAAX Quick Wrench Tool

Information on the OTC Quick Wrench tool for PRIMAAX EX/PRIMAAX suspensions.

Parts Lists

PRIMAAX EX Parts Diagram

Exploded view diagram showing components of the PRIMAAX EX suspension system.

PRIMAAX Parts Diagram

Exploded view diagram showing components of the PRIMAAX suspension system.

Preventive Maintenance

Areas of Inspection

Lists components to be inspected during routine preventive maintenance procedures.

Maintenance Intervals

Recommended inspection and service intervals for preventive maintenance tasks.

Component Inspections

Detailed inspection procedures for key suspension components like air springs and fasteners.

U-Bolt Fastener Maintenance

Procedures and intervals for checking and torquing U-bolt fasteners.

Alignment and Adjustments

Ride Height Adjustment

Information on the height control valve and its role in adjusting suspension ride height.

Lateral Alignment Procedure

Steps to measure and correct lateral alignment of the vehicle's drive axles.

Axle Pinion Angle Check

Procedure for checking the axle pinion angle using a digital protractor.

Drive Axle Alignment (Scrub Angle)

Procedure for inspecting and correcting drive axle alignment, focusing on scrub angle.

Alignment Adjustment Instructions

Detailed steps for adjusting axle alignment using QUIK-ALIGN collars.

Pinion Angle Adjustment

Procedures for adjusting pinion angle using shims or by replacing bottom caps.

Component Replacement

Air Spring Replacement

Detailed disassembly and assembly procedures for replacing the air spring.

Shock Absorber Replacement

Procedures for disassembling and assembling shock absorbers for replacement.

Torque Rod Replacement

Covers replacement of both transverse and longitudinal torque rods.

Bushing Replacement

Procedures for replacing various bushings including torque rod, D-pin, and QUIK-ALIGN pivot.

Beam/Tube/Cap Assembly Replacement

Procedures for replacing support beam, cross tube, and bottom cap assemblies.

Axle Stop and Frame Hanger Replacement

Covers replacement procedures for axle stops and frame hangers.

Torque Specifications

PRIMAAX EX Torque Specifications

Diagram and table showing recommended torque values for PRIMAAX EX components.

PRIMAAX Torque Specifications

Diagram and table showing recommended torque values for PRIMAAX components.

Troubleshooting Guide