Dynojet 424x Installation Guide

©2006-2012 Dynojet Research, Inc. All Rights Reserved.
#
RECORD
Installation Guide For In Ground Model 424x and 424xLC
This manual is copyrighted by Dynojet Research, Inc., hereafter referred to as Dynojet, and all rights are reserved. This manual, and the software described in it, is furnished under license and may only be used or copied in accordance with the terms of such license. This manual is furnished for informational use only, is subject to change without notice, and should not be construed as a commitment by Dynojet. Dynojet assumes no responsibility or liability for any error or inaccuracies that may appear in this manual. Except as permitted by such license, no part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, recording, or otherwise, without the prior written permission of Dynojet.
The Dynojet logo is a trademark of Dynojet Research, Inc.
Any trademarks, trade names, service marks, or service names owned or registered by any other company and used in this guide are the property of their respective companies.
Dynojet Research, Inc., 2191 Mendenhall Drive, North Las Vegas, Nevada 89081, USA.
Printed in USA.
Part Number: 98219112 Version 07 (03/2012)
2
Automotive Dynamometers.
Stationary Dynamometer Number: ______________________________________________
Eddy Current Brake (Retarder) Number:____________________________________________________________
4WD Dynamometer Number: ___________________________________________________
Eddy Current Brake (Retarder) Number:_________________________________________________________
T
ABLE OF
C
ONTENTS
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Chapter 1 Specifications and Operating Requirements
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Conventions Used In This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Dynamometer Specifications and Requirements . . . . . . . . . . . . . . . . . . . .1-4
Chassis Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Compressed Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Computer Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Drill and Drill Bit Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Environmental Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8
Fire Suppression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Forklift Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Hydraulic Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Phone and Internet Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Tie-Down Straps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9
Model 424 Stationary and 4WD Dynamometer . . . . . . . . . . . . . . . . . . . 1-10
Model 424 4WD Dynamometer With Pit Covers . . . . . . . . . . . . . . . . . . .1-11
Dyno Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12
Pit Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Chapter 2 Stationary Dyno Installation
Unpacking and Inspecting the Dyno . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
Dyno Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Removing the Dyno from the Crate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-9
Placing the Dyno in the Pit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Anchoring the Dyno . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12
Installing the Eddy Current Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-12
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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TABLE OF CONTENTS
Chapter 3 4WD Dyno Installation
Unpacking and Inspecting the Dyno . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Track Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Installing the Track Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Dyno Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Removing the Dyno from the Crate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Placing the Dyno on the Track . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Installing the Eddy Current Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-11
Cable Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Identifying the Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
Routing the Cables—Without the Eddy Current Brakes . . . . . . . . . . . . . . 3-13
Wiring the Breakout Board—Without the Eddy Current Brakes . . . . . . . . .3-15
Routing the Cables—With One Eddy Current Brake . . . . . . . . . . . . . . . . .3-16
Wiring the Breakout Board—With One Eddy Current Brake . . . . . . . . . . .3-18
Routing the Cables—With Two Eddy Current Brakes . . . . . . . . . . . . . . . .3-20
Wiring the Advanced Breakout Board—With Two Eddy Current Brakes . . 3-23
Hydraulic Movement Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-25
Filling the Hydraulic Motor with Hydraulic Fluid . . . . . . . . . . . . . . . . . . . .3-29
Wiring the Hydraulic Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30
Air Can Sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31
4WD Dyno Movement Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
Bridge Installation—Stationary Dyno . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Installing the Drum Guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
Installing the Runner Mounts and Runner Supports . . . . . . . . . . . . . . . . .3-35
Installing the Runner Assemblies and Runner Extension . . . . . . . . . . . . . .3-36
Installing the Bridge Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-39
Bridge Installation—4WD Dyno . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40
Installing the Drum Guards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-41
Installing the Runner Mounts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-42
Installing the Runner Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-43
Installing the Bridge Cover and Runner Tie Straps . . . . . . . . . . . . . . . . . . 3-44
Forward Pit Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-45
Ground Hook Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
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In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
Chapter 4 Eddy Current Brake Installation
Eddy Current Brake Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Before Installing the Eddy Current Brake: Verify Optimal Brake Cooling . . .4-2
Before Installing the Eddy Current Brake: Verify Mounting Holes . . . . . . . . 4-3
Unpacking the Eddy Current Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Installing the Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Installing the Bearing, Spline Shaft, and Driveline Assembly . . . . . . . . . . . .4-7
Installing the Eddy Current Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
Installing the Load Cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
Installing the Theta Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Pit Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13
Torque Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16
Installing the Torque Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Connecting the Load Cell Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Load Cell Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Chapter 5 Basic Dyno Operation
TAB LE OF CONT ENTS
Loading the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Connecting the RPM Pickup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
RPM Pickup Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Connecting the Secondary Inductive Pickup . . . . . . . . . . . . . . . . . . . . . . .5-6
Connecting the Primary Inductive Pickup . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Pre-run Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Before Starting the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Engine Warm Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
After Engine Warm Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
Making a Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Preventative Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
Things to Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Verifying the SAAR Brake Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
Maintaining the SAAR Brake Shoe Clearance . . . . . . . . . . . . . . . . . . . . . . 5-13
Dynos with 4WD Attachment—Things to Check . . . . . . . . . . . . . . . . . . . 5-15
Appendix A Red Head Anchor Installation
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
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TABLE OF CONTENTS
Appendix B Power Requirements and Installation
Power Requirements and Installation—North America, Japan, and Locations Using 60 Hz Power
Installing the Wall Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
Testing for Correct Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
Hard Wiring to the Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-4
Power Requirements and Installation—Excluding North America and Japan
Installing the Wall Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6
Testing for Correct Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-7
Hard Wiring to the Building . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-5
Appendix C Stationary Dyno Upgrade
Lift Kit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-2
Air Fittings Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .C-3
Appendix D Bridge Extension Assembly
Bridge Extension Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2
Appendix E Torque Values
Standard Bolt Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2
Grade 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-2
Grade 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3
Metric Bolt Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4
Grade 8.8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4
Grade 10.9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-i
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In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
W
ARNINGS
Disclaimers
Dynojet Research, Inc. (Dynojet) makes no representation or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability for any particular purpose.
Dynojet reserves the right to revise this publication and to make changes from time to time in the content hereof without obligation of Dynojet to notify any person of such revision or changes.
Dynojet is not responsible for false operation due to unexpected dynamometer operation such as may be caused by static, software bugs, hardware failure, etc.
Dynojet is not responsible for damage resulting from improper installation of the dynamometer or from improper service rendered to the dynamometer. Dynojet is not responsible for damage incurred due to alteration of the dynamometer or components, use of unapproved parts, or abuse to the dynamometer.
Do not connect or disconnect cables or components on the dynamometer with the power on. Always wear protective clothing, ear protection, and eye protection (goggles, safety glasses) when
using and servicing the dynamometer.
Equipment Power Requirements
The dynamometer has specific power requirements. Connecting the dynamometer to the incorrect voltage will void the dynamometer warranty. Installation may require a licensed electrician.
Potentially Lethal Voltages
Components attached to and within the dynamometer operate with potentially lethal voltages. To provide the greatest assurance of safety, the AC power cord(s) must be disconnected from the power source before servicing electrical components or wiring. Disconnect all power cords before servicing electrical components for the greatest assurance of safety.
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
v
WARN IN GS
Electrostatic Discharge Precautions
Electrostatic Discharge
Electrostatic Discharge (ESD), or static shock, can damage electronic components within the dynamometer. The damage may occur at the time of an ESD occurrence, or the shock may degrade the component, resulting in a premature component failure later. To avoid ESD damage, always practice good ESD control precautions when servicing the dynamometer. Dynojet designs its dyn amo me ter s t o be ver y t ole ran t o f st ati c sh oc ks by the users, but the electronics are vulnerable when the electronics are exposed. ESD occurs as a result of a difference of potential between two objects when the two objects touch. Damage occurs as a result of the energy released when the discharge (touch) occurs. The difference of potential can accumulate by as simple an action as a user moving across carpet or a seat. If that person’s energy is discharged directly to the electronics, the electronics can be damaged.
Precautions
To protect against ESD damage, you must eliminate the difference of potential before the electronics are handled. Touch the chassis of the dynamometer before touching any of the electronics. By touching the chassis, you discharge any static shocks to the chassis instead of to the electronics.
If you are holding a circuit board or dynamometer component in your hand when you approach the machine, touch the chassis of the dynamometer with your hand before installing the circuit board or component.
When handing a circuit board or component to someone, touch that person with your hand first, then hand them the component.
Always carry circuit boards in anti-static bags when the boards are exposed (removed from the dynamometer).
Battery Fire and Explosion Hazards
There is a danger of explosion if the battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer’s instructions.
Automotive Batteries
In operation, batteries generate and release flammable hydrogen gas. They must always be assumed to contain this gas which, if ignited by burning cigarette, naked flame or spark, may cause battery explosion with dispersion of casing fragments and corrosive liquid electrolyte. Carefully follow manufacturer's instructions for installation and service. Keep away all sources of gas ignition and do not allow metallic articles to simultaneously contact the negative and positive terminals of a battery.
Do not allow the positive and negative terminals to short-circuit. The dynamometer chassis is tied to the negative side of the battery. Do not short between the positive battery terminal or the starter connections to the chassis. In addition, make sure metal tools such as screw drivers, wrenches, and torque wrenches do not come in contact with the negative and positive terminals of the battery. Short circuiting the terminals of the battery can cause burn injuries, damage to the dynamometer, or trigger explosions.
Charging
Batteries being charged will generate and release flammable hydrogen gas. Charging space should be ventilated. Keep battery vent caps in position. Prohibit smoking and avoid creation of flames and sparks nearby.
Wear protective clothing, eye and face protection, when charging or handling batteries.
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In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
WAR NIN GS
Other Potential Hazards
The AC power outlet shall be installed near the equipment and it shall be easily accessible to allow for disconnect before service.
The dynamometer should be located in a well ventilated area. There is a carbon monoxide hazard with all internal combustion engines. Engine exhaust contains poisonous carbon monoxide gas. Breathing it could cause death.
Any dyno room design must incorporate sufficient exhaust extraction. Always wear proper ear and eye protection when operating the dynamometer. Never operate the dynamometer with the covers removed. Never stand behind the dynamometer when in operation. Never operate the dynamometer when there is excessive vibration or noise. Resolve these problems
before proceeding. Never fuel the vehicle on the dynamometer unless appropriate safety measures are taken. Verify brake operation before beginning any dynamometer testing. Verify the vehicle is properly secured to the dynamometer. Never operate the blowers without the guards installed. Exercise care with any dynamometer testing; portions of the dynamometer and vehicle may become
hot. As with any equipment using electricity and having moving parts, there are potential hazards. To use
this dynamometer safely, the operator should become familiar with the instructions for operation of the dynamometer and always exercise care when using it.
Do not repair or replace any part of the dynamometer or attempt any servicing unless specifically recommended in published user-repair instructions that you understand and have the skills to carry out.
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
vii
C HAPTER
S
PECIFICATIONS AND
Thank you for purchasing Dynojet’s In Ground Model 424x/424xLC2 Automotive Dynamometer (dyno). Dynojet’s software and dynamometers will give you the power to get the maximum performance out of the vehicles you evaluate. Whether you are new to the benefits of a chassis dynamometer or an experienced performance leader, the repeatability and diagnostic tools of WinPEP 7 software and a Dynojet dynamometer will give you the professional results you are looking for.
This document provides instructions for installing the stationary dyno, the four wheel drive (4WD) dyno, and the eddy current brakes. This document will walk you through operating requirements, hardware installation, electronics set up, and basic dyno operation. To ensure safety and accuracy in the procedures, perform the procedures as they are described.
Document Part Number: 98219112
O
PERATING
R
EQUIREMENTS
1
Versio n 7
Last Updated: 03-01-2012
This chapter is divided into the following categories:
•Introduction, page 1-2
• Dynamometer Specifications and Requirements, page 1-4
• Model 424 Stationary and 4WD Dynamometer, page 1-10
• Model 424 4WD Dynamometer with Pit Covers, page 1-11
• Dyno Electronics, page 1-12
• Pit Specifications, page 1-13
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
1-1
CHAPTER 1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

INTRODUCTION
Before installing your dyno, please take a moment to read this guide for installation instructions, dyno features, and other important information.
This guide is designed to be a reference tool in your everyday work and includes the following chapters and information:
SPECIFICATIONS AND OPERATING REQUIREMENTS
This chapter describes the specifications and requirements for the dyno.
STATIONARY DYNO INSTALLATION
This chapter describes the procedures for installing the stationary dyno.
4WD DYNO INSTALLATION
This chapter describes the procedures for installing the 4WD dyno.
EDDY CURRENT BRAKE INSTALLATION
This chapter describes the procedures for installing the eddy current brake, torque module, and load cell. This chapter also includes the procedures for load cell calibration.
BASIC DYNO OPERATION
This chapter describes basic dyno operating procedures and maintenance.
RED HEAD INSTALLATION
This appendix describes the procedures for installing the Red Head anchors.
POWER REQUIREMENTS
This appendix describes the power requirements and installation instructions for the eddy current brake.
STATIONARY DYNO UPGRADE
This appendix describes the procedures for upgrading an existing stationary dyno to be used with the 4WD dyno.
BRIDGE EXTENSION ASSEMBLY
This appendix describes the procedures for installing the bridge extension assembly.
TORQUE VALUES
This appendix describes the standard and metric torque values.
1-2
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
SPECIFICATIONS AND OPERATING REQUIREMENTS
#
RECORD

CONVENTIONS USED IN THIS MANUAL

The conventions used in this manual are designed to protect both the user and the equipment.
example of convention description
The Caution icon indicates a potential hazard to the dynamometer equipment. Follow all procedures exactly as they are described and use care when performing all procedures.
The Warning icon indicates potential harm to the person performing a procedure and/or the dynamometer equipment.
The Record # icon reminds you to record your dynamometer and/or eddy current brake (retarder) number on the inside cover of this manual.
Introduction
Bold Highlights items you can select on in the software
interface, including buttons and menus.
The arrow indicates a menu choice. For example, “select
File Open means “select the File menu,
then select the
Open choice on the File menu.”

TECHNICAL SUPPORT

For assistance, please contact Dynojet Technical Support at 1-800-992-3525, or write to Dynojet at 2191 Mendenhall Drive, North Las Vegas, NV 89081.
Visit us on the World Wide Web at www.dynojet.com and www.winpep.com where Dynojet provides state of the art technical support, on-line shopping, and press releases about our latest product lines.
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
1-3
CHAPTER 1
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Dynamometer Specifications and Requirements

DYNAMOMETER SPECIFICATIONS AND REQUIREMENTS
description specifications
Length
Height
Width
Track Assembl y
Weight
Drum
Frame structural steel channel and angle
Maximum Speed 322 KPH (200 MPH)
Maximum Axle Weight 1361 kg (3000 lb.) Remote Switches remote software control
The following specifications and requirements will help you set up your dyno area and verify you have the requirements necessary to operate your dyno safely.

CHASSIS SPECIFICATIONS

of frame 218.44 cm (86.00 in.) of frame with eddy current brake 321.23 cm (126.47 in.)
including eddy current brake and covers
to top of frame 58.42 cm (23.00 in.) to top of frame with feet/track
assembly
of frame 73.66 cm (29.00 in.)
including cradle assembly 130.18 cm (51.25 in.) including air brake 93.83 cm (36.94 in.)
both frames, bridge, covers—full out 584.20 cm (230.00 in.)
both frames, bridge, covers—full out with extension kit
both frames, bridge, covers—full in 469.90 cm (185.00 in.) both frames, bridge, covers—full in
with extension kit
Length 234.32 cm (92.25 in.)
Width 218.44 cm (86.00 in.)
stationary crated dyno 2,114 kg (4,660 lb.)
4WD crated dyno 2,495 kg (5,500 lb.)
diameter 60.96 cm (24.00 in.)
width 205.74 cm (81.00 in.)
345.44 cm (136.00 in.)
72.07 cm (28.375 in.)
609.60 cm (240.00 in.)
495.30 cm (195.00 in.)
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SPECIFICATIONS AND OPERATING REQUIREMENTS
AD129
73.66 cm (29.00 in.)
72.07 cm (28.375 in.) frame to floor
218.44 cm (86.00 in.) frame only
321.23 cm (126.47 in.)
frame and eddy current brake
106.93 cm (42.10 in.) eddy current brake
93.83 cm (36.94 in.)
frame and air brake assembly
58.42 cm (23.00 in.) frame only
Dynamometer Specifications and Requirements
Figure 1-1: Model 424 Stationary Dyno Dimensions
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 1
AD375
218.44 cm (86.00 in.) dyno frame only
321.23 cm (123.47 in.) frame and brake
130.18 cm (51.25 in.)
frame and cradle assembly
73.66 cm
(29.00 in.)
frame
218.44 cm (86.00 in.) track
234.32 cm (92.25 in.) track
Dynamometer Specifications and Requirements
Figure 1-2: Model 424 4WD with Track Assembly Dimensions
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SPECIFICATIONS AND OPERATING REQUIREMENTS
AD131
161.54 cm (63.60 in.)
584.20 cm (230.00 in.) frame and covers full out
609.60 cm (240.00 in.) out with bridge extension*
469.90 cm (185.00 in.) frame and covers full in
495.30 cm (195.00 in.) in with bridge extension*
345.44 cm (136.00 in.)
229.87 cm (90.50 in.)
492.76 cm (194.00 in.)
eddy current brake covers
*requires extension parts, inquire with Dynojet sales
Dynamometer Specifications and Requirements
Figure 1-3: Model 424 4WD with Bridge and Pit Covers Dimensions
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
1-7
CHAPTER 1
Dynamometer Specifications and Requirements

COMPRESSED AIR

The following requirements are needed for the air brake:
• Clean and dry air, between 100-140 psi
• shut off valve
• 1/4-inch NPT pipe thread connector (to attach air to the dyno), if air hose does not have a 3/8-inch inside diameter
• have a 3/8-inch inside diameter

COMPUTER SPECIFICATIONS

You will need to provide a computer system to run the WinPEP software. A complete list of system requirements can be found in your WinPEP 7 User Guide. This manual is included with your dyno and is also available on your WinPEP 7 CD.

DRILL AND DRILL BIT REQUIREMENTS

You will need to provide a drill and drill bit capable of drilling holes in concrete. Refer to Appendix A for more information on installing Red Head Anchors.
• drill bit size: 1/2-inch
• minimum hole depth: 1 5/8-inch (41.2 mm)
description specifications
Power Requirements: 4WD electronics 110v 60Hz or 240v 50Hz
Power Requirements: dyno electronics 110v 60Hz or 240v 50Hz Power Requirements: hydraulic motor 110v 60Hz or 240v 50Hz or 60Hz
Power Requirements: computer 110v 60Hz or 240v 50Hz
Power Requirements: optional eddy current brake
description specifications
Te mp e r at u r e
Humidity 0 to 95% non condensing

ELECTRICAL REQUIREMENTS

240v 30amp single phase circuit for each eddy current brake Refer to Appendix B for more information.

ENVIRONMENTAL REQUIREMENTS

operating min./max 10°C/50°C (50°F/122°F) storage min./max 0°C/70°C (32°F/158°F)
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In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

FIRE SUPPRESSION

Always have adequate fire suppression or fire extinguishers in your dyno room.

FORKLIFT REQUIREMENTS

You will need to provide equipment capable of lifting 2,495 kg (5,500 lb.) to lift the crated dyno and to lift the dyno off the crate and into position in your dyno room. You will also need a pair of straps capable of supporting the uncrated dyno. Dynojet recommends using single loop style straps. Use an approved strap lifting attachment for the forklift to prevent strap slippage. To use lift straps with bare forks is not OSHA compliant.

HYDRAULIC MOTOR

You will need to provide up to five quarts of AW-68 hydraulic fluid for the hydraulic motor.

PHONE AND INTERNET ACCESS

Dynojet recommends you have a phone close to the dyno to call for assistance in an emergency. You may also wish to contact Dynojet to troubleshoot your dyno.
Internet access on your computer is desirable for contacting Dynojet and downloading new information and updates.
SPECIFICATIONS AND OPERATING REQUIREMENTS
Dynamometer Specifications and Requirements

TIE-DOWN STRAPS

Dynojet recommends using tie-down straps for securing the car on the dyno. The dyno comes with an automotive tie-down package.
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 1
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AD376
Drum
precision balanced
and knurled
Track Assembly
Dyno Movement Hydraulic Motor
Cradle Assembly
4WD Dyno
Stationary Dyno
Eddy Current Brake
with theta controller
Spring Applied Air
Brake
Breakout Board
Spring Applied Air
Brake

Model 424 Stationary and 4WD Dynamometer

MODEL 424 STATIONARY AND 4WD DYNAMOMETER
Figure 1-4: Model 424 Stationary and 4WD Dynamometer
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In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
SPECIFICATIONS AND OPERATING REQUIREMENTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AD133
Forward Pit Covers
Stationary Dyno Bridge
and Center Cover
4WD Dyno
Stationary Dyno
4WD Dyno Bridge
and Center Cover
Eddy Current Brake
Pit Covers

Model 424 4WD Dynamometer With Pit Covers

MODEL 424 4WD DYNAMOMETER WITH PIT COVERS
Figure 1-5: Model 424 4WD Dynamometer with Pit Covers
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 1
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9-pin RS-232 socket
CPU module
atmospheric
sensing module
RPM module
input/output module
9-pin hand
held pendant
3-pin power plug
system expansion
connector
inductive pickup
socket
25-pin socket
power

Dyno Electronics

DYNO ELECTRONICS
The standard dyno electronics package is comprised of four interconnected modules. Use the figure below to identify the modules and connectors when routing cables. A detailed description of each module along with the instructions for connecting the dyno electronics to the WinPEP 7 software can be found in your WinPEP 7 User Guide.
Figure 1-6: Dyno Electronics
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PIT SPECIFICATIONS

AD139
452.12 cm (178.00 in.)
88-130-inch wheel base
477.52 cm (188.00 in.)
98-140-inch wheel base**
72.07 cm
(28.375 in.)
233.68 cm (92.00 in.)
with no eddy current brake
340.36 cm (134.00 in.)
with eddy current brake
451.49 cm (177.75 in.)
eddy current brake with Linx*
*Linx option can not be used with the extended wheel base **requires extension parts, inquire with Dynojet sales
Before placing the dyno in the pit, take a moment to verify the dimensions of the pit are correct.
Refer to the pit specifications (P/N 98219111) you received from your salesman for more detailed specifications.
• pit depth: 72.07 cm (28.375 in.)
• pit length: 88-130-inch wheel base 452.12 cm (178.00 in.) 98-140-inch wheel base 477.52 cm (188.00 in.)
Note: Extended wheel base requires extension parts, inquire with Dynojet sales. Linx option can not be used with the extended wheel base.
• pit width: with no eddy current brake 233.68 cm (92.00 in.) with optional eddy current brake 340.36 cm (134.00 in.) with optional eddy current brake and Linx option 451.49 cm (177.75 in.)
Note: Linx option can not be used with the extended wheel base.
SPECIFICATIONS AND OPERATING REQUIREMENTS
Pit Specifications
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
Figure 1-7: Pit Specifications
1-13
S
TATIONARY
C HAPTER
D
YNO INSTALLATION
2
This chapter will walk you through unpacking and installing the stationary dyno. To ensure safety and accuracy in the procedures, perform the procedures as they are described.
This chapter is divided into the following categories:
• Unpacking and Inspecting the Dyno, page 2-2
• Dyno Installation, page 2-9
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
2-1
CHAPTER 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Unpacking and Inspecting the Dyno

UNPACKING AND INSPECTING THE DYNO
When you receive your dyno, examine the exterior of the shipping container for any visible damage. If damage is detected at this stage, contact the shipper or Dynojet before proceeding with unpacking.
Use the following steps to unload your dyno. You will need to provide equipment capable of lifting a minimum of 2,114 kg (4,660 lb.) to move the crated dyno into position in your dyno room. Refer to “Dynamometer Specifications and Requirements” on page 1-4 for more information.
1 Move the crated dyno to a clear area near your dyno room. 2 Using a pry bar, or a large flat screwdriver, and a hammer, carefully remove the
top and sides of the crate. Note: Inspect the exterior of the dyno for any indications of damage. Report any
damage immediately.
3 Remove the boxes and loose parts from the crate, verify their condition and
contents and set them aside. Note: Some of these parts may have been shipped in the 4WD dyno crate
(crate 2).
part description part description
runner tie strap (2) P/N 21214701
runner clamp, short (2) P/N 21214702
runner clamp plate (2) P/N 21214703
runner slide (2) P/N 21214704
bolt, 3/8-16 x 1/2", button­head, flange (14) P/N 36580434
bolt, 3/8-16 x 1.5", flange, hex (4) P/N 36582471
bolt, 3/8-16 x 3", flange, hex (5) P/N 36584871
washer, 3/8", flat (8) P/N 36923100
2-2
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
STATIONARY DYNO INSTALLATION
Unpacking and Inspecting the Dyno
part description part description
runner tie slide (2) P/N 21214705
washer, 3/8", splitlock, steel (4) P/N 36932100
drum guard, right, 4WD dyno P/N 21216101
drum guard, left, 4WD dyno P/N 21216102
drum guard, rear (2) P/N 21216103
drum guard, left, stationary P/N 21219113
drum guard, front, stationary P/N 21219114
anchor, redhead, 3/8" (6) P/N 37513200
installation tool, redhead anchor P/N 37518200
axle strap, 21" (4) P/N 30AS21
car tie-down, 2" x 10’ (4) P/N 500-C10
car tie-down, hi-perf, 2" x 10’ (2) P/N 500-C10W/S
drum guard, right, stationary P/N 21219115
forward pit cover, right P/N 21219116
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
runner extension support leg (2) P/N 61119810
runner support pillar assembly (4) P/N 61314500
2-3
CHAPTER 2
Unpacking and Inspecting the Dyno
part description part description
forward pit cover, middle P/N 21219117
riser foot assembly (4) P/N 61319600
forward pit cover, left P/N 21219118
runner mount, short (2) P/N 21514801
runner mount (2) P/N 21514802
runner support (2) P/N 21514803
forward pit cover spacer P/N 21519140
dyno electronics P/N 76100003N
bolt kit, 424 bridge P/N 79110002
bolt kit, 4WD above ground P/N 79110004
bolt kit, 3/8-16 x 5", black oxide P/N 79110006
ground hook kit (10) P/N 79190001
runner extension, left P/N 21519811
runner extension, right P/N 21519812
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see list of parts below
banner, dynojet (2) P/N D706
inductive secondary pickup (2) P/N DE100-109S
STATIONARY DYNO INSTALLATION
Unpacking and Inspecting the Dyno
part description part description
chock (4) P/N 2A092
inductive primary pickup clip P/N DE100-110L
nut, 1/4-20, nylock (4) P/N 36468100
bolt, 1/4-20 x 1.5", hex (4) P/N 36562470
The following parts are included in the Retarder Upgrade P/N 77010005:
theta controller mounting bracket (2) P/N 21616205
splined shaft P/N 22117130
bearing, flange P/N 32355056
bolt, 3/8-16 x 1", hex (6) P/N DM150-019-012
washer, 1/2", flat (4) P/N 36943102
driveline assembly P/N 62240130
torque module P/N 66104001
nut, 3/8-16, nylock (4) P/N 36488100
screw, 8-32 x 3/8", pan-head, sems, phil (8) P/N 36540647
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
theta controller (2) P/N 66411004
load cell assembly P/N 76950505
2-5
CHAPTER 2
Unpacking and Inspecting the Dyno
part description part description
nut, 1/2-13, nylock, hex (4) P/N 36708100
temperature sensor P/N 76955001
bolt, 1/2-13 x 1.5", flange, hex (6) P/N 36801080
washer, 3/8", flat (12) P/N 36923100
The following parts are included in the Retarder Cover Kit P/N 78119004:
calibration cover (2) P/N 21217513
foot, retarder cover (6) P/N 21919101
bolt, 3/8-16 x 1", hex (12) P/N DM150-019-012
support leg P/N 61319507
pit cover, retarder (2) P/N 61329400
screw, 1/4-20 x 5/8", pan­head, torx (12) P/N 36561045
bolt, 3/8-16 x 1.5", hex (8) P/N 36582477
anchor, redhead, 3/8" (8) P/N 37513200
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washer, 3/8", flat (8) P/N DM150-011-002
bolt, 3/8-16 x 1", hex (8) P/N DM150-019-012
STATIONARY DYNO INSTALLATION
Unpacking and Inspecting the Dyno
part description part description
The following parts are included in each Ground Hook Kit P/N 79190001:
ground hook/D-ring P/N 10111
anchor, redhead, 3/8" (2) P/N 37513200
D-ring bracket, surface mount P/N 10112
washer, 3/8", splitlock, steel (2) P/N 36932100
washer, 5/16", flat (2) P/N DM150-002-007
bolt, 3/8-16 x 1", hex (2) P/N DM150-019-012
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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#
RECORD
AD134
front/rear drum guard
dyno number
left/right drum guard
Unpacking and Inspecting the Dyno
4 Remove the crate braces that support the top portion of the crate. 5 Remove the four lag bolts and washers securing the dyno to the crate base. 6 Remove the five screws securing the front and rear drum guards and set aside. 7 Remove the front and rear drum guards and set aside. 8 Remove the two screws securing the left and right drum guards and set aside. 9 Remove the left and right drum guards and set aside.
Be sure you record the dynamometer number on the inside cover of this manual.
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In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
Figure 2-1: Remove the Drum Guards
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DYNO INSTALLATION

place strap through
opening in dyno frame
This section will walk you through removing the dyno from the crate and installing the dyno in your pit. Refer to Chapter 4 for instructions on installing the eddy current brake.
Note: Refer to Appendix C for instructions on upgrading an existing dyno.

REMOVING THE DYNO FROM THE CRATE

STATIONARY DYNO INSTALLATION
Dyno Installation
You will need to provide equipment capable of lifting a minimum of 2,114 kg (4,660 lb.) to lift the dyno off the crate and into position in your dyno room. You will also need a pair of straps capable of supporting the same weight. Dynojet recommends using two 2-inch x 6-foot single loop style straps. Refer to “Forklift Requirements” on page 1-7.
1 Remove the four lag bolts and washers securing the dyno to the crate base using a
9/16-inch socket, open or box end wrench.
2 Route the loop strap through the opening in the dyno frame and through itself.
Pull the strap tight. Do this on each side of the dyno frame. 3 Push the forklift forks together. 4 Place each loop strap over both forks.
Note: The straps must be the same length and meet in the middle. Verify each
loop strap is over both forks to prevent the forks from being pulled apart.
5 Using the forklift, carefully lift the dyno off the crate and move it into position in
your dyno room.
Figure 2-2: Loop Strap Placement
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 2
AD377
feet
Dyno Installation
6 With the dyno on the forklift, secure the four feet to the bottom of the dyno using
one 3/8-16 x 1.5-inch bolt, lock washer, and washer each.
Note: If the feet are already installed, skip this step.
Figure 2-3: Install the Feet
2-10
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

PLACING THE DYNO IN THE PIT

AD427
eddy current
brake to be
installed here
8.26 cm
(3.25 in.)
10.16 cm
(4.00 in.)
vehicles loaded
from this end
rear of dyno
side of dyno
118.75 cm (46.75 in.)
Linx option
1 Using the forklift, gently lower the dyno into the pit.
Note: Make sure the dyno air brake is facing towards the center of the pit.
2 Gently lower the dyno into position. 3 Verify the side of the dyno is 8.26 cm (3.25 in) from the pit wall.
When installing the Linx option, verify the side of the dyno is 118.75 cm
(46.75 in) from the pit wall. For more information on installing the Linx option,
refer to the Linx Installation Guide P/N 98200021. 4 Verify the rear of the dyno is 10.16 cm (4.00 in) from the pit wall.
STATIONARY DYNO INSTALLATION
Dyno Installation
Figure 2-4: Placing the Dyno in the Pit
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 2
AD137
secure dyno to floor
secure dyno to floor
secure dyno to floor
Dyno Installation

ANCHORING THE DYNO

Dynojet recommends you secure your dyno to the floor in your dyno room using concrete anchors. Use the following instructions to secure the dyno to the floor.
You will need the following parts:
• 36923100 Washer, 3/8", Hardened, Flat, Steel (4)
• 37513200 Anchor, Redhead, 3/8" (4)
• 37518200 Redhead Anchor Installation Tool
• DM150-019-012 Bolt, 3/8-16 x 1", Hex (4)
1 Using the mounting feet as a template, mark and drill each hole needed to secure
the four dyno feet to the floor. 2 Install four Red Head anchors. Refer to Appendix A for installation instructions. 3 Secure each mounting foot to the floor using one 3/8-16 x 1-inch hex-head bolt
and one 3/8-inch flat washer.
Figure 2-5: Secure the Dyno to the Floor

INSTALLING THE EDDY CURRENT BRAKE

Refer to Chapter 4 for eddy current brake installation instructions and install your eddy current brake at this time.
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C HAPTER
3
4WD D
This chapter will walk you through unpacking and installing the 4WD dyno. To ensure safety and accuracy in the procedures, perform the procedures as they are described.
This chapter is divided into the following categories:
• Unpacking and Inspecting the Dyno, page 3-2
• Track Assembly, page 3-5
• Dyno Installation, page 3-9
• Cable Routing, page 3-12
• Hydraulic Movement Installation, page 3-25
• Air Can Sleeve, page 3-31
• 4WD Dyno Movement Test, page 3-32
• Bridge Installation—Stationary Dyno, page 3-33
• Bridge Installation—4WD Dyno, page 3-40
YNO INSTALLATION
• Forward Pit Covers, page 3-45
• Ground Hook Installation, page 3-47
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Unpacking and Inspecting the Dyno

UNPACKING AND INSPECTING THE DYNO
When you receive your dyno, examine the exterior of the shipping container for any visible damage. If damage is detected at this stage, contact the shipper or Dynojet before proceeding with unpacking.
Use the following steps to unload your dyno. You will need to provide equipment capable of lifting a minimum of 2,495 kg (5,500 lb.) to move the crated dyno into position in your dyno room. Refer to “Dynamometer Specifications and Requirements” on page 1-4 for more information.
1 Move the crated dyno (crate 2) to a clear area near your dyno room. 2 Using a pry bar, or a large flat screwdriver, and a hammer, carefully remove the
top and sides of the crate.
Note: Inspect the exterior of the dyno for any indications of damage. Report any
damage immediately.
3 Remove the bridge pieces, pit covers, and track assembly from the top portion of
the crate and set aside. 4 Remove the following parts and hardware boxes from the crate and set aside. 5 Verify the contents of the hardware boxes and set aside.
Note: Some of these parts may have been shipped in the stationary dyno crate
(crate 1).
part description part description
cylinder mount, floor P/N 21200064
bridge cover, stationary dyno P/N 21219511
bridge cover, 4WD dyno P/N 21219512
rail (2) P/N 21514282
bolt, shoulder, 3/8-16, 1/2"D x 1"L (8) P/N 36800973
anchor, redhead, 3/8" (12) P/N 37513200
installation tool, redhead anchor P/N 37518200
cylinder mount, dyno P/N 61300016
3-2
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
Unpacking and Inspecting the Dyno
part description part description
rail tie (3) P/N 21716400
rail tie assembly (2) P/N 61314300
spacer, 424 hydraulic movement (2) P/N 26100000
spacer, rail clamp (8) P/N 26152020
rail clip (10) P/N 31619500
clevis pin, 3/4 x 4.5" (2) P/N 32900000
hairpin cotter, 7/16 x 3/4" (2) P/N 32904080
rail clamp (4) P/N 61314700
calibration arm assembly P/N 61319001
runner assembly (30) P/N 61319500
washer, 1/4", flat (4) P/N DM150-009-003
washer, 3/8", flat (2) P/N DM150-011-002
weight (4) P/N 35430899
bolt, 3/8-16 x 1.5", flange, hex (12) P/N 36582471
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
bolt, 1/4 x 1/2", hex (4) P/N DM150-011-005
bolt, 3/8-16 x 1", hex (4) P/N DM150-019-012
3-3
CHAPTER 3
#
RECORD
AD394
rear drum guard
dyno number
left/right drum guard
Unpacking and Inspecting the Dyno
6 Remove the crate braces that support the top portion of the crate. 7 Remove the four lag bolts and washers securing the dyno to the crate base using a
9/16-inch socket, open or box end wrench. 8 Remove the drum guards if installed. If the drum guards are not installed, skip to
step #9.
8a Remove the five screws securing the rear drum guard and set aside.
8b Remove the rear drum guard and set aside.
8c Remove the two screws securing the left and right drum guards and set
aside.
8d Remove the left and right drum guards and set aside. 9 Before removing the dyno from the crate, you will need to install the track
assembly in your dyno room. Refer to the instructions page 3-5 for more
information on installing the track assembly.
Be sure you record the dynamometer number on the inside cover of this manual.
Figure 3-1: Remove the Drum Guards
3-4
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TRACK ASSEMBLY

The stationary dyno must be installed before proceeding with the 4WD dyno installation. Refer to chapter 2 for stationary dyno installation instructions.
Before installing the track assembly, layout the entire track assembly using the following instructions and Figure 3-2 for position and alignment.
You will need the following parts:
• 37513200 Anchor, Redhead, 3/8" (10)
• 37518200 Redhead Anchor Installation Tool
1 Line up the center line of the track assembly with the center line of the stationary
dyno. 2 Measure the following distances and set the track assembly as listed below and
shown in Figure 3-2.
• The track assembly should be 128.27 cm (50.50 in.) from the stationary dyno without the extension kit and 153.67 cm (60.50 in.) with the extension kit.
• The distance between the inside of the rails should be 184.15 cm (72.50-inches +/- 0.06 in.).
• The distance from the first rail tie assembly to the first rail tie is 49.37 cm (19.438 in.).
• The distance from the first rail tie assembly to the second rail tie is 103.82 cm (40.875 in.).
• The distance from the first rail tie assembly to the third rail tie is 158.28 cm (62.313 in.).
3 Verify the track assembly is square. Measure from corner to corner and verify
these measurements are equal. 4 Mark and drill all ten holes, five on each side of the track assembly. 5 Set the track assembly aside. 6 Install the Red Head anchors. Refer to Appendix A for installation instructions.
4WD DYNO INSTALLATION
Track Assembly
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 3
AD108
128.27 cm (50.50 in.)
without extension
153.67 cm (60.50 in.)
with extension
(requires extension
parts, inquire with
Dynojet sales)
49.37 cm
(19.438 in.)
103.82 cm
(40.875 in.)
158.28 cm
(62.313 in.)
184.15 cm (72.5 in.)
center line for
stationary dyno and
track assembly
stationary dyno
track layout
mark and
drill holes
first rail tie assembly
first rail tie
second rail tie
third rail tie
last rail tie assembly
Track Assembly
Figure 3-2: Mark and Drill Holes for the Track Assembly
3-6
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

INSTALLING THE TRACK ASSEMBLY

AD045
rail clamps
rail
first rail tie
assembly
last rail tie
assembly
rail tie
holes for cable track assembly
Once all the holes are marked and drilled, install the track assembly.
You will need the following parts:
• 21514282 Rail (2)
• 21716400 Rail Tie (3)
• 31619500 Rail Clip (10)
• 36582471 Bolt, 3/8-16 x 1.5", Flange-Hex (10)
• 61314300 Rail Tie Assembly (2)
• 61314700 Rail Clamp (4)
1 Layout the first and last rail tie assemblies and the rail ties. Use the holes you
marked and drilled for placement of the rail tie assemblies and rail ties. Note: The first rail tie has four holes for securing the cable track assembly. Verify
this rail tie assembly is closest to the stationary dyno.
2 Place the rail clamps over the rails. 3 Place the rails into the rail tie assemblies.
Note: For clarity, the pit and stationary dyno are not shown.
4WD DYNO INSTALLATION
Track Assembly
Figure 3-3: Install the Track Assembly
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-7
CHAPTER 3
AD103
bolt
rail tie clip
rail
anchor in floor
rail tie
Track Assembly
4 Loosely install the ten rail tie clips using one 3/8-16 x 1.5-inch flange-head bolt
per clip. There are five rail tie clips on each side of the track assembly. 5 Verify the track assembly is square and make any necessary adjustments. 6 Tighten all ten bolts.
Note: For clarity, the pit and stationary dyno are not shown.
Figure 3-4: Install the Rail Tie Clips
3-8
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DYNO INSTALLATION

AD351
place strap through
opening in dyno frame
hydraulic ram
With the track assembly installed and secured to the floor, you are ready to install the 4WD dyno. This section will walk you through removing the dyno from the crate and securing the dyno to the track.

REMOVING THE DYNO FROM THE CRATE

You will need to provide equipment capable of lifting a minimum of 2,495 kg (5,500 lb.) to lift the dyno off the crate and into position in your dyno room. You will also need a pair of straps capable of supporting the same weight. Dynojet recommends using two 2-inch x 6-foot single loop style straps.
1 Route the loop strap through the opening in the dyno frame and through itself.
Pull the strap tight. Do this on each side of the dyno frame. 2 Push the forklift forks together. 3 Place each loop strap over both forks.
Note: The straps must be the same length and meet in the middle. Verify each
loop strap is over both forks to prevent the forks from being pulled apart.
4 Using the forklift, carefully lift the dyno off the crate and move it into position in
your dyno room.
4WD DYNO INSTALLATION
Dyno Installation
Use caution when handling the hydraulic ram and the hoses connecting the ram to the hydraulic motor.
Figure 3-5: Loop Strap Placement
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-9
CHAPTER 3
AD378
rail clamp
hydraulic movement
motor facing away
from stationary dyno
cable track under dyno and
towards stationary dyno
rail clamp
cradle
assembly
pin and cotter pin
stationary dyno
Dyno Installation

PLACING THE DYNO ON THE TRACK

You will need to keep the cable track routed underneath the dyno and towards the stationary dyno.
You will need the following parts:
• 26152020 Spacer, Rail Clamp (8)
• 36800973 Bolt, Shoulder, 3/8-16, 1/2"D x 1"L (8)
1 Remove the cotter pin and pin from all four cradle assemblies as shown in
Figure 3-6. 2 Verify the rail clamps are positioned as shown in Figure 3-6. 3 Verify the dyno movement motor is facing away from the stationary dyno. 4 Using the forklift, gently lower the dyno into the pit and onto the rails.
Figure 3-6: Lower the Dyno onto the Rails
3-10
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
AD353
spacer
bolt
Dyno Installation
5 Secure the rail clamps to the cradle assembly on the dyno using two 3/8-inch
shoulder bolts and two spacers each. 6 Replace the pins and cotter pins removed earlier from the four cradle assemblies
as shown in Figure 3-6. 7 Move the rail clamps up and down and verify they move freely. 8 Roll the dyno back and forth and verify the rail clamps are not binding and the
track assembly is square.
Note: For clarity, the pit and stationary dyno are not shown.
Figure 3-7: Secure Dyno to Rail Clamps

INSTALLING THE EDDY CURRENT BRAKE

Refer to Chapter 4 for eddy current brake installation instructions and install your eddy current brake at this time.
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-11
CHAPTER 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cable Routing

CABLE ROUTING
Use the following instructions to identify and route the cables for dynos with and without eddy current brakes.

IDENTIFYING THE CABLES

cable brief routing description
A - 25-pin cable connects to the dyno electronics (P/N 42924250)
B - data acquisition (pickup card) cable, stationary C - data acquisition (pickup card) cable, 4WD dyno
four wires (red, white, black, shield) and ferrules, connects to the Breakout board (P/N 66954001, stationary; P/N 66953001, 4WD)
D - brake signal cable two wires and ferrules, connects to the Breakout
E - air hose, short (16 feet) connects to the barbed fitting on the air brake can on
F - air hose, long (18 feet) connects to the T fitting on the stationary dyno brake
G - 4WD power cable connects to the power supply (P/N 76952008)
H - hydraulic pump power cable connects to your 110VAC or 220VAC power outlet
I - dyno movement pendant cable connects to the dyno movement pendant
The following cables are used with the eddy current brake(s):
J - load cell cable, stationary dyno
K - load cell cable, 4WD dyno
L - theta signal cable, stationary dyno M - theta signal cable, 4WD dyno
board (P/N 76950213)
the stationary dyno
solenoid
(P/N 76953005, cable; P/N 76953004, pendant)
connects to the torque module on the dyno electronics (P/N 76950505)
five wires (black, white, red, green, shield) and ferrules, connects to the Advanced Breakout board (P/N 76950413)
N - temperature sensor cable, stationary
O - temperature sensor cable, 4WD dyno
P - theta power cable, stationary dyno
Q - theta power cable, 4WD dyno R - controller cable, stationary dyno
S - controller cable, 4WD dyno
3-12
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
five wires (black, white, red, green, shield) and ferrules, connects to the Advanced Breakout board (P/N 76950420)
connects to your 240V power source (P/N 76950311)
connects to the theta controller (P/N 66952003)
4WD DYNO INSTALLATION

ROUTING THE CABLES—WITHOUT THE EDDY CURRENT BRAKES

Use these instructions for routing cables without the eddy current brake. Refer to page 3-16 for more information on routing cables with one eddy current brake and page 3-20 for more information on routing cables with two eddy current brakes.
Refer to Figure 3-8 for cable locations.
Refer to page 3-15 for more information on wiring the Breakout board.
You will need the following parts:
• DM150-009-003 Washer, 1/4", Flat (4)
• DM150-011-005 Bolt, 1/4" x 1/2", Hex (4)
1 Secure the first and second cable tracks to the front rail tie assembly using two
1/4-20 x 1/2-inch hex-head screws and two washers each. 2 Route the 25-pin cable (A) from the Breakout board, through the pit conduit, and
to the dyno electronics. Connect the 25-pin cable to the dyno electronics.
Refer to Figure 1-6 for information on where to connect the 25-pin cable.
3 Route the pickup card cable (B) from the stationary dyno to the Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
4 Route the pickup card cable (C) from the first cable track to the Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
5 Route the brake signal cable (D) from the first cable track to the Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
6 Route the air hose (E) from the second cable track to the T fitting on the
stationary dyno brake solenoid. 7 Route the long air hose (F) from the second cable track to the barbed fitting on
the air brake can on the stationary dyno.
Note: Verify the stationary dyno has clean dry air regulated between 100-140 psi
supplied to the remaining barbed fitting on the brake solenoid assembly.
The air brake comes installed with a hose barb for a 3/8-inch inside diameter air
hose. If your hose does not have an inside diameter of 3/8-inch then you will need
an air hose nipple (1/4-inch NPT) to connect your clean, dry shop air supply to
the dyno. Once the pressure is connected, the air brake is ready to use.
8 Route the power cable (G) from the first cable track, through the pit conduit, and
connect to the power supply. Plug the power supply into your power source. 9 Connect the power supply to the dyno electronics. Plug the power supply into
your power source. 10 Route the hydraulic pump power cable (H) from the first cable track and connect
to a 110VAC or 220VAC outlet. Refer to page 3-30 for more information on wiring
the hydraulic pump motor. 11 Route the dyno movement pendant cable (I) from the first cable track, through
the pit conduit, and connect to the pendant.
Cable Routing
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-13
CHAPTER 3
DRY AIR IN
100-140 PSI
AD390
E
D
C
dyno electronics
stationary
dyno
4WD dyno
first cable
track
F
power supply
dyno movement
pendant
power supply for
dyno electronics
breakout
board
second
cable track
A
H
G
B
I
Cable Routing
Figure 3-8: Routing the Cables—Without the Eddy Current Brakes
3-14
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
jumpers
J1 and J2
four wheel drive
with no eddy
current brake
jumper settings
pickup card
stationary
pickup card
4WD
brake signal
J1
J2

WIRING THE BREAKOUT BOARD—WITHOUT THE EDDY CURRENT BRAKES

1 Attach the pickup card cable (B, C) to the Breakout board. This cable may already
be connected.
The pickup card cable (B) from the stationary dyno has four wires which connect
to the wiring block labeled DRUM 1.
The pickup card cable (C) from the 4WD dyno has four wires which connect to
the wiring block labeled DRUM 2.
• Red wire connects to R1 • Black wire connects to B1
• White wire connects to W1 • Ground (shield) wire connects to S1
2 Attach the brake signal cable (D) to the Breakout board. The brake signal cable
from the 4WD dyno has two wires which connect to the wiring block labeled
BRAKE.
Note: There will already be wires connected to BRAKE; add the brake signal wires
to this location.
3 Verify the jumpers are set as shown in Figure 3-9.
Cable Routing
Figure 3-9: Wiring the Breakout Board—Without the Eddy Current Brakes
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-15
CHAPTER 3
Cable Routing

ROUTING THE CABLES—WITH ONE EDDY CURRENT BRAKE

Use these instructions for routing cables with only one eddy current brake. The single eddy current brake is installed on the stationary dyno. Refer to Chapter 4 for eddy current brake, torque module, and load cell installation instructions. Refer to page 3-20 for more information on routing cables with two eddy current brakes.
Refer to Figure 3-10 for cable locations.
Refer to page 3-15 for more information on wiring the Breakout board.
You will need the following parts:
• DM150-009-003 Washer, 1/4", Flat (4)
• DM150-011-005 Bolt, 1/4" x 1/2", Hex (4)
1 Secure the first and second cable tracks to the front rail tie assembly using two
1/4-20 x 1/2-inch hex-head screws and two washers each. 2 Route the 25-pin cable (A) from the Breakout board, through the pit conduit, and
to the dyno electronics. Connect the 25-pin cable to the dyno electronics.
Refer to Figure 1-6 for information on where to connect the 25-pin cable.
3 Route the pickup card cable (B) from the stationary dyno to the Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
4 Route the pickup card cable (C) from the first cable track to the Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
5 Route the brake signal cable (D) from the first cable track to the Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
6 Route the air hose (E) from the second cable track to the T fitting on the
stationary dyno brake solenoid. 7 Route the long air hose (F) from the second cable track to the barbed fitting on
the air brake can on the stationary dyno.
Note: Verify the stationary dyno has clean dry air regulated between 100-140 psi
supplied to the remaining barbed fitting on the brake solenoid assembly.
The air brake comes installed with a hose barb for a 3/8-inch inside diameter air
hose. If your hose does not have an inside diameter of 3/8-inch then you will need
an air hose nipple (1/4-inch NPT) to connect your clean, dry shop air supply to
the dyno. Once the pressure is connected, the air brake is ready to use.
8 Route the hydraulic pump power cable (H) from the first cable track and connect
to a 110VAC or 220VAC outlet. Refer to page 3-30 for more information on wiring
the hydraulic pump motor. 9 Route the dyno movement pendant cable (I) from the first cable track, through
the pit conduit, and connect to the pendant. 10 Route the load cell cable (J) from the stationary dyno, through the pit conduit,
and to the dyno electronics. Connect the cable to the torque module.
Refer to page 4-19 for more information on connecting the load cell cable.
3-16
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
DRY AIR IN
100-140 PSI
AD391
E
C
D
dyno electronics
stationary
dyno
4WD dyno
first cable
track
F
power supply
dyno movement
pendant
power supply for
dyno electronics
breakout
board
second
cable track
J
G
I
B
P
A
N
L
theta controller
R
H
Cable Routing
11 Route the theta signal cable (L) from the stationary dyno theta controller to the
Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
12 Route the temperature sensor cable (N) from the stationary dyno eddy current
brake to the Breakout board.
Refer to page 3-15 for more information on wiring the Breakout board.
13 Route the theta power cable (P) from the stationary dyno, through the pit
conduit, and to your 240V power source. 14 Route the controller cable (R) from the eddy current brake to the theta controller.
Connect the cable to the theta controller. 15 Route the power cable (G) from the first cable track, through the pit conduit, and
connect to the power supply. Plug the power supply into your power source. 16 Connect the power supply to the dyno electronics. Plug the power supply into
your power source.
Figure 3-10: Routing the Cables—With One Eddy Current Brake
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-17
CHAPTER 3
Cable Routing

WIRING THE BREAKOUT BOARD—WITH ONE EDDY CURRENT BRAKE

1 Attach the pickup card cable (B, C) to the Breakout board. This cable may already
be connected.
The pickup card cable (B) from the stationary dyno has four wires which connect
to the wiring block labeled DRUM 1.
The pickup card cable (C) from the 4WD dyno has four wires which connect to
the wiring block labeled DRUM 2.
• Red wire connects to R1 • Black wire connects to B1
• White wire connects to W1 • Ground (shield) wire connects to S1
2 Attach the brake signal cable (D) to the Breakout board. The brake signal cable
from the 4WD dyno has two wires which connect to the wiring block labeled
BRAKE.
Note: There will already be wires connected to BRAKE; add the brake signal wires
to this location
3 Attach the theta signal cable (L) cable to the Breakout board.
The theta signal cable (L) from the stationary dyno has five wires which connect to
the wiring block labeled LOAD CONTROL.
• Black wire connects to BLK • Red wire connects to RED
• White wire connects to WHT • Green wire connects to GRN
• Ground (shield) wire connects to SH
4 Attach the temperature sensor (N) cable to the Breakout board.
The temperature sensor cable (N) from the stationary dyno has five wires which
connect to the wiring block labeled TEMP.
• Green wire connects to GRN • White wire connects to WHT
• Black wire connects to BLK • Red wire connects to RED
• Ground (shield) wire connects to S1
5 Verify the jumpers are set as shown in Figure 3-11.
3-18
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
jumpers
J1 and J2
four wheel drive
with one eddy
current brake
jumper settings
pickup card
stationary
pickup card
4WD
brake signal
theta signal
temperature
sensor
Cable Routing
Figure 3-11: Wiring the Breakout Board—With One Eddy Current Brake
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-19
CHAPTER 3
AD079
cable track
link
crossbar
use screwdriver
to open
Cable Routing

ROUTING THE CABLES—WITH TWO EDDY CURRENT BRAKES

Use these instructions for routing cables with two eddy current brakes. Refer to Chapter 4 for eddy current brake, torque module, and load cell installation instructions.
Refer to Figure 3-13 for cable locations.
Refer to page 3-23 for more information on wiring the Advanced Breakout board.
You will need the following parts:
• DM150-009-003 Washer, 1/4", Flat (4)
• DM150-011-005 Bolt, 1/4" x 1/2", Hex (4) 1 Pull both the first and second cable tracks out from under the dyno. 2 Using a screwdriver, open the crossbar on each link.
Figure 3-12: Open the Crossbar
3 Place the theta power cable (Q) in the second cable track with the air hoses. 4 Place the load cell cable (K), theta signal cable (M), and temperature sensor cable
(O) in the first cable track. 5 Close the cable door on each link. 6 Place the cable tracks back under the dyno. 7 Secure the first and second cable tracks to the front rail tie assembly using two
1/4-20 x 1-inch hex-head screws and two washers each. 8 Route the 25-pin cable (A) from the Advanced Breakout board, through the pit
conduit, and to the dyno electronics. Connect the 25-pin cable to the dyno
electronics.
Refer to Figure 1-6 for information on where to connect the 25-pin cable.
9 Route the pickup card cable (B) from the stationary dyno to the Advanced
Breakout board.
Route the pickup card cable (C) from the first cable track to the Advanced
Breakout board.
Refer to page 3-23 for more information on wiring the Advanced Breakout board.
3-20
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
Cable Routing
10 Route the brake signal cable (D) from the first cable track to the Advanced
Breakout board.
Refer to page 3-23 for more information on wiring the Advanced Breakout board.
11 Route the air hose (E) from the second cable track to the T fitting on the
stationary dyno brake solenoid. 12 Route the long air hose (F) from the second cable track to the barbed fitting on
the air brake can on the stationary dyno.
Note: Verify the stationary dyno has clean dry air regulated between 100-140 psi
supplied to the remaining barbed fitting on the brake solenoid assembly.
The air brake comes installed with a hose barb for a 3/8-inch inside diameter air
hose. If your hose does not have an inside diameter of 3/8-inch then you will need
an air hose nipple (1/4-inch NPT) to connect your clean, dry shop air supply to
the dyno. Once the pressure is connected, the air brake is ready to use.
13 Route the hydraulic pump power cable (H) from the first cable track and connect
to a 110VAC or 220VAC outlet. Refer to page 3-30 for more information on wiring
the hydraulic pump motor. 14 Route the dyno movement pendant cable (I) from the first cable track, through
the pit conduit, and connect to the pendant. 15 Route the load cell cable (J) from the stationary dyno, through the pit conduit,
and to the dyno electronics. Connect the cable to the bottom torque module.
Route the load cell cable (K) from the 4WD dyno, through the first cable track,
through the pit conduit, and to the dyno electronics. Connect the cable to the top
torque module.
Refer to page 4-19 for more information on connecting the load cell cable.
16 Route the theta signal cable (L) from the stationary dyno to the Advanced
Breakout board.
Route the theta signal cable (M) from the first cable track to the Advanced
Breakout board.
Refer to page 3-23 for more information on wiring the Advanced Breakout board.
17 Route the temperature sensor cable (N) from the stationary dyno to the Advanced
Breakout board.
Route the temperature sensor cable (O) from the first cable track to the Advanced
Breakout board.
Refer to page 3-23 for more information on wiring the Advanced Breakout board.
18 Route the theta power cable (P) from the stationary dyno, through the pit
conduit, and to your 240V power source.
Route the theta power cable (Q) from the second cable track, through the pit
conduit, and to your 240V power source.
19 Route the controller cable (R) from the stationary eddy current brake to the theta
controller. Connect the cable to the theta controller.
Route the controller cable (S) from the 4WD eddy current brake to the theta
controller. Connect the cable to the theta controller.
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-21
CHAPTER 3
DRY AIR IN
100-140 PSI
AD392
E
dyno electronics
stationary
dyno
4WD dyno
first cable
track
F
G
dyno movement
pendant
power supply for
dyno electronics
breakout
board
second
cable track
K
J
I
D
B
O
M
A
C
L
P
Q
N
theta controller
R
S
H
Cable Routing
20 Route the power cable (G) from the first cable track, through the pit conduit, and
connect to the power supply. Plug the power supply into your power source. 21 Connect the power supply to the dyno electronics. Plug the power supply into
your power source.
Figure 3-13: Routing Cables—With Two Eddy Current Brakes
3-22
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
Cable Routing

WIRING THE ADVANCED BREAKOUT BOARD—WITH TWO EDDY CURRENT BRAKES

Refer to Figure 3-14 for Advanced Breakout board locations.
1 Attach the pickup card cable (B, C) to the Advanced Breakout board.
The pickup card cable (B) from the stationary dyno has four wires which connect
to the wiring block labeled DRUM 1.
The pickup card cable (C) from the 4WD dyno has four wires which connect to
the wiring block labeled DRUM 2.
• Red wire connects to RED • Black wire connects to BLK
• White wire connects to WHT • Ground (shield) wire connects to SH
2 Attach the brake signal cable (D) to the Advanced Breakout board. The brake
signal cable from the 4WD dyno has two wires which connect to the wiring block
labeled BRAKE SIGNAL. 3 Attach the theta signal cable (L, M) cable to the Advanced Breakout board.
The theta signal cable (L) from the stationary dyno has five wires which connect to
the wiring block labeled LOAD CONTROL DRUM 1.
The theta signal cable (M) from the 4WD dyno has five wires which connect to the
wiring block labeled LOAD CONTROL DRUM 2.
• Black wire connects to BLK • Red wire connects to RED
• White wire connects to WHT • Green wire connects to GRN
• Ground (shield) wire connects to SH
4 Attach the temperature sensor (N, O) cable to the Advanced Breakout board.
The temperature sensor cable (N) from the stationary dyno has five wires which
connect to the wiring block labeled TEMP FROM DRUM 1.
The temperature sensor cable (O) from the 4WD dyno has five wires which
connect to the wiring block labeled TEMP FROM DRUM 2.
• Green wire connects to GRN • White wire connects to WHT
• Black wire connects to BLK • Red wire connects to RED
• Ground (shield) wire connects to S1
5 Verify the jumpers are set as show in Figure 3-14.
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-23
CHAPTER 3
LOAD CONTROL DRUM 1
RED WHTBLK
SH
GRN
LOAD CONTROL DRUM 2
RED WHT
BLK
SHGRN
LOAD CONTROL DRUM 3
RED WHTBLK
SHGRN
LOAD CONTROL DRUM 4
RED WHTBLK
SHGRN
DRUM 2 SENSOR
RED WHT
BLK SH
DRUM 3 SENSOR
RED WHT
BLK SH
DRUM 4 SENSOR
RED WHT
BLK SH
DRUM 1 SENSOR
RED WHT
BLK SH
AIR BRAKE
SWITCH
-SIG- SH
SWITCH
-SIG- SH
BRAKE
SIGNAL
TEMP FROM DRUM 1
REDWHT BLK SH
GRN
TEMP FROM DRUM 2
REDWHT BLK SH
GRN
c
-SEE MANUAL TO SET-
P5
LOAD CONTROL DRUM 1 USED LOAD CONTROL DRUM 2 USED LOAD CONTROL DRUM 3 USED LOAD CONTROL DRUM 4 USED
DYNOJET 2006 45291004
YES NO
P4
P3
P2
P6
BRAKE BUTTON
AIR BRAKE
DRUM 4 SENSOR
DRUM 3 SENSOR
DRUM 2 SENSOR
DRUM 1 SENSOR
POWER
R33 R34
R36 R37
R35
R38
R39
D5 D1 D2
D4 D7
D3
D8
U1
U2
C22
C27
R11
R43 R42
L2
P1
TB2
U7
L3
L1
C7
C12
TB1
C11
C16
R1
R2
R6
R7
C2
C3
C1
R3
R8
U4
R5
C5
R10
C4
R4
C28
R9
C15
R12
R15
R21
R13
R16
R20
R23
R18
U10
R14
R17
R19
R22
C26
C6
D6
R24
Q1
C12U6C17
TB4
TB3
U14
C29
R30
R25 R26 R28 R27 R29 C14
R32
U5
C13
U13
C20
R41
R40
C23
L5
L4
J2
U11 U9
C33
C32
C30
R45
R46
U8
U3
U12
MC9S12UF32PUL
C19
C9
C8
C34
J1
X1
C25
R44
C31
C36
R47
TB5
U15
R31
C35
CB020
AIR BRAKE CONNECTED
c
-SEE MANUAL TO SET-
P5
LOAD CONTROL DRUM 1 USED LOAD CONTROL DRUM 2 USED LOAD CONTROL DRUM 3 USED LOAD CONTROL DRUM 4 USED
DYNOJET 2006 45291004
YES NO
P4
P3
P2
P6
AIR BRAKE CONNECTED
CB021
CB022
drum x sensor air brake brake button
the drum tab blocks the optical sensor. the air brake is thrown. the brake button on the pendent is pressed.
LED
is on when...
brake signal
jumper settings
pickup card cable
4WD dyno
temperature sensor cable
4WD dyno
theta signal cable
stationary dyno
pickup card cable
stationary dyno
theta signal cable 4WD
dyno
temperature sensor cable
stationary dyno
LED indicators
Cable Routing
3-24
Figure 3-14: Wiring the Advanced Breakout Board—With Two Eddy Current Brakes
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HYDRAULIC MOVEMENT INSTALLATION

AD346
dyno cylinder mount
Use the following instructions to install the hydraulic movement.
You will need the following parts:
• 21200064 Cylinder Mount, Floor
• 26100000 Spacer,424 Hydraulic Movement (2)
• 32900000 Clevis Pin, 3/4 x 4.5" (2)
• 32904080 Hairpin Cotter, 7/16 x 3/4" (2)
• 36582471 Bolt, 3/8-16 x 1.5", Flange-Hex (2)
• 37513200 Anchor, Redhead, 3/8" (2)
• 61300016 Cylinder Mount, Dyno
• DM150-011-002 Washer, 3/8", Flat (2)
• DM150-019-012 Bolt, 3/8-16 x 1", Hex (2)
1 Secure the dyno cylinder mount to the dyno using two 3/8-16 x 1.5-inch bolts.
4WD DYNO INSTALLATION
Hydraulic Movement Installation
Figure 3-15: Secure the Dyno Cylinder Mount to the Dyno
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-25
CHAPTER 3
AD343
clevis pin
hairpin cotter
dyno cylinder mount
hydraulic ram
Hydraulic Movement Installation
2 Secure the hydraulic ram to the dyno cylinder mount using one clevis pin and
hairpin cotter.
Figure 3-16: Secure the Hydraulic Ram to the Dyno Cylinder Mount
3-26
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
AD344
clevis pin
spacers
floor cylinder
mount
hydraulic ram
Hydraulic Movement Installation
3 Temporarily hold the floor cylinder mount to the hydraulic ram using two spacers
and one clevis pin.
Figure 3-17: Hold the Floor Cylinder Mount to the Ram
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-27
CHAPTER 3
AD345
secure the hydraulic ram to
the floor cylinder mount
use the floor cylinder mount to mark holes
install the anchors and secure the
floor cylinder mount to the floor
Hydraulic Movement Installation
4 Using the floor cylinder mount as a template, mark each hole needed to secure
the mount to the floor. 5 Remove the clevis pin, spacers, and floor cylinder mount. 6 Move the hydraulic ram out of the way. 7 Drill the holes marked in step #4. 8 Install the Red Head anchors. Refer to Appendix A for installation instructions. 9 Secure the floor cylinder mount to the floor using two 3/8-16 x 1-inch hex bolts
and two 3/8-inch flat washers. 10 Secure the hydraulic ram to the floor cylinder mount using the clevis pin and two
spacers removed in step #5 and one hairpin cotter.
Figure 3-18: Secure the Floor Cylinder Mount to the Floor
3-28
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

FILLING THE HYDRAULIC MOTOR WITH HYDRAULIC FLUID

AD393
remove the cap on
the hydraulic motor
1 Remove the cap on the hydraulic motor. 2 Add four quarts of AW-68 hydraulic fluid. 3 Replace the cap.
4WD DYNO INSTALLATION
Hydraulic Movement Installation
Figure 3-19: Fill the Hydraulic Motor with Oil
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-29
CHAPTER 3
AD393
wiring box cover
Hydraulic Movement Installation

WIRING THE HYDRAULIC MOTOR

Verify the motor is wired for your needs. The motor is wired for 110v but can be changed to 220v.
1 Remove the wiring box cover. 2 Follow the instructions on the cover to wire the motor for 220v.
Figure 3-20: Wiring the Hydraulic Motor
3-30
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AIR CAN SLEEVE

AD395
loosen nut
sleeve
shipped placement of
nut and sleeve
correct placement of
nut and sleeve
sleeve
nut
When you receive your dyno, the nut holding the air can sleeve will be tight. You will need to loosen the nut on all four air cans.
Using a wrench, loosen the nut as far as you can. The sleeve will drop down as shown in Figure 3-21.
4WD DYNO INSTALLATION
Air Can Sleeve
Figure 3-21: Air Can Sleeve
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 3
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4WD Dyno Movement Test

4WD DYNO MOVEMENT TEST
Verify the movement of the 4WD dyno before installing the grates.
1 The Breakout board jumper settings are preset, however, verify jumpers are set
appropriately as shown in Figure 3-9, Figure 3-11, or Figure 3-14.
Note: The Breakout board is located on the stationary dyno.
2 Verify the hydraulic motor is filled with hydraulic fluid. Refer to “Filling the
Hydraulic Motor with Hydraulic Fluid” on page 3-29 for more information. 3 Turn the dyno electronics on. 4 Verify the dyno has 100-140 psi of compressed air. 5 Press the red button on the dyno pendant. The button should light up indicating
the brakes are activated. The red button will control the brakes on both dynos. 6 Verify the brakes are working properly by pressing the red button a few times to
cycle the brakes. 7 With the brakes on, press and hold the "in" button on the dyno movement
pendant. You should hear air venting, and the rail clamps releasing.
Note: The dyno brakes MUST be on or the 4WD dyno will not move.
8 Keep holding the "in" button down until you see the dyno begin to move. 9 Repeat this procedure holding the "out" button. 10 Remove the cap on the hydraulic motor and check the level of the oil. Add
additional oil if needed. Refer to “Filling the Hydraulic Motor with Hydraulic
Fluid” on page 3-29 for more information.
3-32
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BRIDGE INSTALLATION—STATIONARY DYNO

Use the following instructions to install the drum guards, runner mounts and supports, runner assemblies, and the bridge cover.
You will need the following parts:
• 21214703 Runner Clamp Plate (2)
• 21214704 Runner Slide (2)
• 21216103 Drum Guard, Rear
• 21219113 Drum Guard, Left, Stationary
• 21219114 Drum Guard, Front, Stationary
• 21219115 Drum Guard, Right, Stationary
• 21219511 Bridge Cover, Stationary Dyno
• 21514802 Runner Mount (z-shaped) (2)
• 21514803 Runner Support (2)
• 21519811 Runner Extension, Left
• 21519812 Runner Extension, Right
• 36468100 Nut, 1/4-20, Nylock (4)
• 36562070 Bolt, 1/4-20 x 1.25", Hex (16)
• 36562470 Bolt, 1/4-20 x 1.5”, Hex (4)
• 36580434 Bolt, 3/8-16 x 1/2", Button-Head, Flange, Allen (4)
• 36582034 Bolt, 3/8-16 x 1.25", Button-Head, Flange, Allen (8)
• 36582471 Bolt, 3/8-16 x 1.5", Flange-Hex (6)
• 36588071 Bolt, 3/8-16 x 5", Black Oxide (16)
• 36701100 Nut, 1/2-13, Hex (8)
• 36800000 Bolt, 1/2-13 x 3", Hex (8)
• 36912100 Washer, 1/4", Splitlock, Steel (16)
• 36923100 Washer, 3/8", Hardened, Flat, Steel (26)
• 36932100 Washer, 3/8", Splitlock, Steel (16)
• 36942100 Washer, 1/2", Splitlock, Steel (8)
• 37513200 Anchor, Redhead, 3/8" (10)
• 37518200 Redhead Anchor Installation Tool
• 61119810 Runner Extension Support Leg (2)
• 61314500 Runner Support Assembly (4)
• 61319500 Runner Assembly (16)
• DM150-009-003 Washer, 1/4", Flat (4)
• DM150-011-004 Nut, 3/8-16, Hex (16)
• DM150-019-012 Bolt, 3/8-16 x 1", Hex (10)
4WD DYNO INSTALLATION
Bridge Installation—Stationary Dyno
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-33
CHAPTER 3
AD379
front drum guard
rear drum guard
left drum guard
right drum guard
Bridge Installation—Stationary Dyno

INSTALLING THE DRUM GUARDS

1 Secure the longer left and right drum guards using one 3/8-16 x 1.25-inch button-
head bolt each.
Note: These drum guards are longer (88.90 cm, 35.00 in.) than the left and right
drum guards for the 4WD dyno and must be mounted on the stationary dyno.
2 Secure the wider front drum guard using five 3/8-16 x 1.25-inch button-head
bolts.
Note: This front drum guard is wider (27.94 cm, 11.00 in.) than the front drum
guard for the 4WD dyno and must be mounted on the stationary dyno.
3 Secure the rear drum guard using the center 3/8-16 x 1.25-inch button-head bolt.
3-34
Figure 3-22: Install the Drum Guards
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

INSTALLING THE RUNNER MOUNTS AND RUNNER SUPPORTS

AD380
runner mount
assembly
runner clamp
runner mount
runner support
runner support pillar
drum guard
119.38 cm
(47.00 in.)
inner holes on
runner support
outer holes on
runner support
Refer to Appendix D for instructions on installing the bridge extension assembly.
1 Place the runner mount (z-shaped) with eight round holes on top of the drum
guard.
Note: The standard runner mount is smaller than the extended runner mount
used with the bridge extension kit. Be sure to use the correct runner mount for
your installation.
2 Place the runner clamp plate with eight round holes on top of the runner mount. 3 Loosely secure each runner mount and runner clamp using three 3/8 x 1.5-inch
flange hex allen bolts. 4 Secure two runner support pillars to the each runner support using two
1/2 x 3-inch hex bolts, lock washers, and nuts per support pillar.
Note: Use the inner holes on the runner support closest to the pit wall. Use the
outer holes on the runner support closest to the center of the dynos.
5 Stand up the runner support assemblies and place approximately 119.38 cm
(47.00 in.) from the stationary dyno.
4WD DYNO INSTALLATION
Bridge Installation—Stationary Dyno
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
Figure 3-23: Install the Runner Mounts and Runner Supports
3-35
CHAPTER 3
AD381
runner assembly
runner mount
runner
assembly
runner support
existing bolt on top
secure from underneath
(not visible from this view)
plastic end
runner slide
Bridge Installation—Stationary Dyno

INSTALLING THE RUNNER ASSEMBLIES AND RUNNER EXTENSION

1 Place the plastic runner slide on top of the runner support. 2 Slide each runner assembly into the runner mount. Verify the plastic end faces
away from the stationary dyno. 3 Loosely secure each runner assembly to the runner mount using one 3/8 x 5-inch
bolt, flat washer, lock washer, and nut. These bolts will be tightened later. 4 Loosely secure each runner assembly to the runner support from underneath
using one 1/4 x 1.25-inch bolt and lock washer. These bolts will be tightened later.
Verify the existing bolt in each runner assembly is on top. There are sixteen
runner assemblies, eight with each runner mount.
Note: For clarity, only two runner assemblies are shown.
Figure 3-24: Install the Runner Assemblies
3-36
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4WD DYNO INSTALLATION
AD428
runner extension
runner assembly
support leg
runner extension
support
leg
track
Bridge Installation—Stationary Dyno
5 Install the runner extension. There is a left and right version of the runner
extension; the left version is shown in Figure 3-25.
Note: Do not install the runner extension on the side of the dyno where the eddy
current brake will be installed.
5a Secure the support leg to the runner extension using two 1/4 x 1.5-inch
bolts, two flat washers, and two 1/4-20 nuts. 5b Remove the two 1/4-20 torx screws from the runner assembly. 5c Secure the runner extension to the runner assembly using the two torx
screws removed earlier. 5d Remove the existing bolt securing the rail tie clip and secure the leg support
to the track using the existing bolt. 5e Mark and drill the hole needed to secure the support leg to the pit floor. 5f Install the Red Head anchors. Refer to Appendix A for installation
instructions. 5g Secure the support leg to the floor with one 3/8 x 1-inch bolt and one flat
washer. Note: For clarity, the 4WD dyno and eddy current brake not shown.
Figure 3-25: Install the Runner Extension
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-37
CHAPTER 3
AD382
edge of dyno
square ruler
runner assembly
Bridge Installation—Stationary Dyno
6 Square up the runner assemblies.
6a Place a square ruler along the edge of the stationary dyno and along one of
the runner assemblies. Move the runner assemblies until they are square
with the dyno. 6b Tighten the bolts securing the runner assemblies to the runner mounts. 6c Tighten the bolts securing the runner mounts to the dyno.
7 Dynojet recommends you anchor the support pillars to the dyno room floor,
however this step is optional. 7a Using the support pillars as a template, mark and drill each hole needed to
secure the four pillars to the floor. 7b Install eight Red Head anchors. Refer to Appendix A for installation
instructions. 7c Secure each pillar to the floor using two 3/8-16 x 1-inch hex-head bolts and
two 3/8-inch flat washers.
Figure 3-26: Square up the Runner Assemblies
3-38
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

INSTALLING THE BRIDGE COVER

AD383
center bolt
cover
support pillar
cover
1 Remove the center bolt from the front drum guard. 2 Place the cover on the drum guard while supporting the other end of the cover. 3 Replace the center bolt. 4 Secure the cover to each runner support pillar two 3/8-16 x 1/2-inch button-head
flange bolts.
Installing the cover will square up the other set of runner assemblies.
5 Tighten all bolts.
4WD DYNO INSTALLATION
Bridge Installation—Stationary Dyno
Figure 3-27: Install the Center Cover
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-39
CHAPTER 3
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Bridge Installation—4WD Dyno

BRIDGE INSTALLATION—4WD DYNO
This section will walk you through installing the drum guards, runner mounts, runner assemblies, cover, and runner tie straps.
You will need the following parts:
• 21214701 Runner Tie Strap (2)
• 21214702 Runner Clamp, Short (2)
• 21214705 Runner Tie Slide (2)
• 21216101 Drum Guard, Right
• 21216102 Drum Guard, Left
• 21216103 Drum Guard, Rear
• 21219512 Bridge Cover, 4WD Dyno
• 21514801 Runner Mount, Short (2)
• 36561045 Screw, 1/4-20 x 5/8", PH, Torx, Black (14)
• 36582034 Bolt, 3/8-16 x 1.25", Button-Head, Flange, Allen (3)
• 36582471 Bolt, 3/8-16 x 1.5", Flange-Hex (6)
• 36588071 Bolt, 3/8-16 x 5", Black Oxide (14)
• 36923100 Washer, 3/8", Hardened, Flat, Steel (14)
• 36932100 Washer, 3/8", Splitlock, Steel (14)
• 61319500 Runner Assembly (14)
• DM150-011-004 Nut, 3/8-16, Hex (14)
3-40
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

INSTALLING THE DRUM GUARDS

AD384
rear drum guard
left drum guard
right drum guard
1 Secure the shorter left and right drum guards using one 3/8 x 1.25-inch button-
head bolt each. Note: These drum guards are shorter than the left and right drum guards for the
stationary dyno and must be mounted on the 4WD dyno.
2 Secure the rear drum guard using the center 3/8 x 1.25-inch button-head bolt.
4WD DYNO INSTALLATION
Bridge Installation—4WD Dyno
Figure 3-28: Installing the Drum Guards
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-41
CHAPTER 3
AD385
runner clamp
runner mount
drum guard
Bridge Installation—4WD Dyno

INSTALLING THE RUNNER MOUNTS

The runner mounts and runner clamps are shorter for the moveable dyno.
1 Place the runner mount (z-shaped) with seven round holes on top of the drum
guard.
2 Place the runner clamp plate with seven round holes on top of the runner mount. 3 Loosely secure each runner mount and runner clamp to the dyno using three
3/8 x 1.5-inch flange hex allen bolts.
Figure 3-29: Install the Runner Mounts
3-42
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

INSTALLING THE RUNNER ASSEMBLIES

AD386
runner mount
runner
assembly
leave inner bolt out
plastic end
1 Slide each runner assembly into the runner mount.Verify the plastic end faces
away from the 4WD dyno.
2 Loosely secure the six outside runner assemblies to the runner mount using one
3/8 x 5-inch bolt, flat washer, lock washer, and nut each. Note: Leave the seventh inner bolt out. This bolt will be used to secure the center
cover.
Each runner assembly will lay on the runner supports between the stationary dyno runner assemblies.
3 Verify the existing bolt in each runner assembly is on the bottom. There are
fourteen runner assemblies, seven on each runner mount.
4WD DYNO INSTALLATION
Bridge Installation—4WD Dyno
Figure 3-30: Install the Runner Assemblies
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-43
CHAPTER 3
AD387
1/4 x 5/8-inch torx
head bolt
cover
3/8 x 1.5-inch flange
hex allen bolt
runner tie slide
runner tie strap
Bridge Installation—4WD Dyno

INSTALLING THE BRIDGE COVER AND RUNNER TIE STRAPS

1 Secure the cover to the runner mounts using the two reserved 3/8 x 1.5-inch
flange hex allen bolts from earlier.
2 Secure the cover to the runner assemblies using two 1/4 x 5/8-inch torx head
bolts.
3 Secure one runner tie strap and one plastic runner tie slide to each set of
moveable runner assemblies using six 1/4 x 5/8-inch torx head bolts each.
3-44
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
Figure 3-31: Install the Cover and Runner Tie Straps
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FORWARD PIT COVERS

AD388
middle pit cover
pit cover spacer
Before installing the 4WD dyno pit covers, be sure to install the Linx option at this time. Refer to the Linx Installation Guide P/N 98200021.
Use the following instructions to install the 4WD dyno pit covers.
You will need the following parts:
• 21219116 Forward Pit Cover, Right
• 21219117 Forward Pit Cover, Middle
• 21219118 Forward Pit Cover, Left
• 21519140 Forward Pit Cover Spacer
• 36580434 Bolt, 3/8-16 x 1/2", Button-Head, Flange (14)
• 36584871 Bolt, 3/8-16 x 3", Flange, Hex (5)
1 Place the pit cover spacer on the dyno frame with the holes aligned. 2 Secure the middle pit cover to the pit cover spacer using one 3/8-16 x 3-inch bolt.
4WD DYNO INSTALLATION
Forward Pit Covers
Figure 3-32: Install the Outer Pit Covers
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 3
AD389
secure to pit cover spacer
with 3/8-16 x 3-inch bolt
left and right
pit covers
secure ends with
3/8-16 x 1/2-inch bolt
secure to middle
pit cover with
3/8-16 x 1/2-inch bolt
middle pit cover
Forward Pit Covers
3 Secure the left and right pit covers to the pit cover spacer and dyno frame using
4 Secure the left and right pit covers to the middle pit cover using five
5 Secure the end of the middle pit cover to the end of the left and right pit covers
two 3/8-16 x 3-inch bolts each.
3/8-16 x 1/2-inch bolts each.
using two 3/8-16 x 1/2-inch bolts each.
Figure 3-33: Install the Outer Pit Covers
3-46
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GROUND HOOK INSTALLATION

Using the pit drawing as a guide, place the ground hooks in a location that works best for your dyno application. Refer to the pit specifications (P/N 98219111) you received from your salesman for more detailed specifications.
You will need the following parts:
• 10111 Ground Hook/D-Ring (10)
• 10112 D-Ring Bracket (10)
• 36932100 Washer, 3/8", Splitlock, Steel (20)
• 37513200 Anchor, Redhead, 3/8" (20)
• DM150-002-007 Washer, 5/16", Flat (20)
• DM150-019-012 Bolt, 3/8-16 x 1", Hex (20)
1 Using the ground hook as a template, mark and drill each hole needed to secure
the ground hooks to the floor.
2 Install the Red Head anchors. Refer to Appendix A for installation instructions. 3 Secure each ground hook to the floor using two 3/8-16 x 1-inch hex bolts, two
5/16-inch flat washers, and two 3/8” lock washers.
4WD DYNO INSTALLATION
Ground Hook Installation
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
3-47
E
DDY
C
URRENT
C HAPTER
B
RAKE INSTALLATION
4
The eddy current brake along with the torque module, when added to Dynojet's market leading inertia dynamometer, results in a complete vehicle performance test.
This chapter provides instructions for installing the eddy current brake (retarder) to the stationary and 4WD dynos. This chapter also provides instructions for installing the torque module and load cell along with load cell calibration procedures. To ensure safety and accuracy in the procedures, perform the procedures as they are described.
This chapter is divided into the following categories:
• Eddy Current Brake Installation, page 4-2
• Pit Covers, page 4-13
• Torque Module Installation, page 4-16
• Load Cell Calibration, page 4-20
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4-1
CHAPTER 4
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EB165
arrow on rotor
direction of
rotation
load cell
stationary dyno 4WD dyno
front of dyno

Eddy Current Brake Installation

EDDY CURRENT BRAKE INSTALLATION
This section will walk you through removing the eddy current brake from the crate, installing the eddy current brake to the dyno, and installing the theta controller.
These instructions will show the stationary dyno, but the instructions are the same for both the stationary and 4WD dynos.
You will need to provide equipment capable of lifting the eddy current brake off the crate and into position in your dyno room. You will also need a pair of straps. Dynojet recommends using single loop style straps.
Refer to Appendix B for information on the power requirements for the eddy current brake.

BEFORE INSTALLING THE EDDY CURRENT BRAKE: VERIFY OPTIMAL BRAKE COOLING

Placing the eddy current brake on the left or right side of the dyno will determine the direction that it turns.
For optimal eddy current brake cooling, the brake should turn in the direction of the arrows on the rotor.
Note: The dyno will perform correctly in either direction, but cooling of the rotors may be less effective when turning in the direction opposite of the arrows.
The example below shows the brake turning in the direction of the arrows on the rotors.
Figure 4-1: Optimal Brake Cooling
4-2
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
EDDY CURRENT BRAKE INSTALLATION
AD138
1.59 cm
(0.625 in.)
6.67 cm
(2.625 in.)
24.13 cm
(9.50 in.)
36.83 cm
(14.50 in.)
60.96 cm
(24.00 in.)
1.59 cm
(0.625 in.)
Eddy Current Brake Installation

BEFORE INSTALLING THE EDDY CURRENT BRAKE: VERIFY MOUNTING HOLES

Dynos with the serial number 2240308 and lower will need to have mounting holes drilled into the dyno frame before installing the eddy current brake.
Using a 5/8-inch or 1/2-inch drill, mark and drill the four holes as shown in Figure 4-2.
Figure 4-2: Eddy Current Brake Mounting Holes
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 4
uprights and cross
members
crate top
remove boxes
Eddy Current Brake Installation

UNPACKING THE EDDY CURRENT BRAKE

1 Remove the top and sides of the crate. 2 Remove any hardware and parts boxes from the crate and verify the box contents
using the parts list.
3 Remove the uprights and cross members from the crate.
Figure 4-3: Remove the Crate Top
4-4
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
EDDY CURRENT BRAKE INSTALLATION
#
RECORD
EB125
shaft
bolt
shaft
brake number
Eddy Current Brake Installation
4 Remove the four lag bolts securing the brake to the crate. 5 Place the nylon loop strap around the shaft on either side of the brake.
Dynojet recommends using single loop style straps.
6 Using a forklift, lift the eddy current brake from the crate and place the brake near
the dyno.
Be sure you record the dynamometer and/or eddy current brake number on the inside cover of this manual.
Figure 4-4: Remove the Brake from the Crate
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 4
temperature sensor
sensor
remove nut
nut
cross brace
Eddy Current Brake Installation

INSTALLING THE TEMPERATURE SENSOR

Use the following instructions to secure the temperature sensor to the eddy current brake in the location shown.
You will need the following part:
• 76955001 Temperature Sensor Assembly
Figure 4-5: Temperature Sensor Location
1 Remove the nut from the sensor. 2 Slide the sensor through the cross brace. 3 Secure the sensor to the brace using the nut removed earlier.
Note: For clarity, the side panel has been removed.
Figure 4-6: Install the Temperature Sensor
4-6
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
EDDY CURRENT BRAKE INSTALLATION
EB160
bearing
bolt
Eddy Current Brake Installation

INSTALLING THE BEARING, SPLINE SHAFT, AND DRIVELINE ASSEMBLY

The eddy current brake can be installed on either side of your dyno, the installation instructions are the same.
You will need the following parts:
• 22117130 Splined Shaft Assembly
• 32355056 Bearing
• 36801080 Bolt, 1/2-13 x 1.5", Flange-Hex (2)
• 62240130 Driveline Assembly
1 Install the bearing using two 1/2-13 x 1.5-inch flange-hex bolts. Leave the bolts
loose.
Figure 4-7: Install the Bearing
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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CHAPTER 4
EB193
driveline assembly
splined shaft
bearing set screws
bearing mounting
bolts
remove four bolts, two on either side
shoulder
Eddy Current Brake Installation
2 Insert the splined shaft through the bearing and into the spline hub of drum.
Note: Make sure the short splined end faces out.
3 Push the splined shaft in until the shoulder is flush with the bearing. 4 Torque the bearing mounting bolts to 57 foot-pounds. 5 Torque the two set screws on the bearing to 25 foot-pounds. 6 Remove the four bolts securing the u-joint to the keyed driveline yoke. Set these
bolts aside; they will be used to secure the eddy current brake to the driveline assembly.
7 Separate the keyed yoke from the driveline assembly. You may need to use a
screwdriver or pry bar to separate the u-joint from the yoke.
8 Place the driveline assembly on the spline shaft.
4-8
Figure 4-8: Install the Splined Shaft and Driveline Assembly
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide

INSTALLING THE EDDY CURRENT BRAKE

EB162
yoke
driveline assembly
stiffener plate lip
place key in
keyway
You will need the following parts:
• 36708100 Nut, 1/2-13, Nylock-Hex (4)
• 36801080 Bolt, 1/2-13 x 1.5", Flange-Hex (4)
• 36923100 Washer, 3/8", Hardened, Flat (8)
• 36943102 Washer, 1/2", Hardened, Flat (4)
• 37620844 Woodruff Key, 1/2 x 2.75"
• DM150-019-012 Bolt, 3/8-16 x 1", Hex (8)
1 Place the key in the eddy current brake shaft keyway. 2 Place the keyed yoke onto the eddy current brake shaft. 3 Line up the eddy current brake yoke with the driveline assembly. 4 Slide the brake frame towards the dyno frame until they touch. Make sure the
brake yoke is aligned with the driveline. Note: The stiffener plate lip slides under the dyno frame.
EDDY CURRENT BRAKE INSTALLATION
Eddy Current Brake Installation
Figure 4-9: Install the Brake Assembly
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4-9
CHAPTER 4
EB163
secure brake side to
dyno using bolts and
washers (not all visible)
secure brake side to
dyno using bolts and
washers (not all visible)
secure stiffener plate to
dyno using bolts and
washers (not all visible)
Eddy Current Brake Installation
5 Secure the side of the brake frame to the dyno using eight 3/8-16 x 1-inch hex
bolts and eight 3/8-inch hardened flat washers. Not all of the bolts and washers are visible from this view.
6 Secure the stiffener plate to the dyno using four 1/2-13 x 1.5-inch flange-hex bolts,
four 1/2-inch flat washers, and four 1/2-13 nylock nuts. Not all of the bolts and washers are visible from this view.
7 Secure the yoke to the driveline assembly using the four bolts removed earlier.
Torque the bolts to 70 foot-pounds.
8 Torque the brake yoke set screws to 25 foot-pounds.
4-10
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
Figure 4-10: Secure the Brake Frame to the Dyno

INSTALLING THE LOAD CELL

distance must be
the same
eyelet
bar
lock nut
TM058
install the load cell
(the brake is not
shown for clarity)
load cell cable
dyno
You will need the following part:
• 76950505 Load Cell Assembly
1 Verify the main dyno power is disconnected. 2 Remove the two bolts and nuts securing the existing bar on the eddy current
brake and remove the bar. Set the bolts and nuts aside.
3 Verify the eyelets on the load cell are spaced the same as the bar removed earlier.
Adjust the load cell spacing by loosening the lock nut and turning the eyelet.
EDDY CURRENT BRAKE INSTALLATION
Eddy Current Brake Installation
Figure 4-11: Verify Load Cell Spacing
4 Secure the load cell to the mounting bracket using the two bolts and nuts
removed earlier.
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
Figure 4-12: Install the Load Cell
4-11
CHAPTER 4
EB218
mounting bracket
theta controller
theta controller not
visible from this view
Eddy Current Brake Installation

INSTALLING THE THETA CONTROLLER

Use the following instructions to install the theta controller to both the stationary and 4WD dynos.
You will need the following parts:
• 21616205 Theta Controller Mounting Bracket (2)
• 36488100 Nut, 3/8-16, Nylock (4)
• 36540647 Screw, 8-32 x 3/8", Pan-Head, Sems, Phil (8)
• 36923100 Washer, 3/8", Flat (4)
• 66411004 Theta Controller (2)
• DM150-019-012 Bolt, 3/8-16 x 1", Hex (4)
1 Secure the theta controller bracket to the eddy current brake using two
3/8-16 x 1-inch bolts, two 3/8-inch flat washers, and two 3/8-inch nylock nuts.
2 Secure the theta controller to the bracket using four 8-32 x 3/8-inch screws.
Figure 4-13: Install the Theta Controller
4-12
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PIT COVERS

AD446
pit cover
foot
leg
Before installing the eddy current brake pit covers, verify all cables have been routed and you have completed the 4WD dyno installation. Refer to “Cable Routing” on page 3-12 for more information.
You will need the following parts:
1 Install three feet using one 3/8-16 x 1-inch hex bolt each to the pit cover. 2 Install the support leg using one 3/8-16 x 1-inch hex bolt to the pit cover. 3 Install three feet to the remaining pit cover using one 3/8-16 x 1-inch hex bolt
EDDY CURRENT BRAKE INSTALLATION
• 21217513 Calibration Cover (2)
• 21919101 Foot (6)
• 36561045 Screw, 1/4-20 x 5/8", Pan-Head, Torx (12)
• 36582477 Bolt, 3/8-16 x 1.5", Hex (8)
• 37513200 Anchor, Redhead, 3/8" (8)
• 37518200 Redhead Anchor Installation Tool
• 61319507 Support Leg
• 61329400 Pit Cover, Retarder (2)
• DM150-011-002 Washer, 3/8", Flat (8)
• DM150-019-012 Bolt, 3/8-16 x 1", Hex (8)
each.
Pit Covers
Figure 4-14: Install the Feet and Leg to the Pit Cover
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
4-13
CHAPTER 4
AD447
second pit cover
first pit cover
leg
bridge
foot
edge of pit cover
sits on the floor
26.04 cm (10.25 in.)
pit wall to side of cover
Pit Covers
4 Using the support leg as a template, mark and drill the two holes needed to
secure the leg to the floor.
5 Install two Red Head anchors. Refer to Appendix A for installation instructions. 6 Secure the leg to the floor using two 3/8-16 x 1.5-inch hex bolt and two 3/8-inch
flat washers.
7 Place the pit cover and leg into the pit. Place the leg near the 4WD bridge.
Verify the edge of the pit cover sits on the floor.
Verify the side of the pit cover is 26.04 cm (10.25 in.) from the pit wall.
Verify there is a 1.27 cm gap (0.5 in. +/- .01 in.) between the cover and the closest bridge rail.
8 Place the second pit cover so that it butts up to the first pit cover. 9 Secure the second pit cover to the leg using one 3/8 x 1-inch hex bolt. 10 Using each foot as a template, mark and drill each hole needed to secure the six
feet to the floor.
11 Install six Red Head anchors. Refer to Appendix A for installation instructions. 12 Secure each foot to the floor using one 3/8 x 1.5-inch bolt and one 3/8-inch flat
washer.
4-14
Figure 4-15: Install the Pit Covers
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
EDDY CURRENT BRAKE INSTALLATION
AD448
calibration cover
Pit Covers
13 Once you have calibrated the load cell, install the pit calibration covers using six
1/4-20 x 5/8-inch torx screws each. Note: Do not install these covers until you have finished calibrating the load cell.
Refer to page 4-20 for calibration instructions.
Figure 4-16: Install the Calibration Covers
Version 7 In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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HS039
dust cover
power cord
input
power switch

Torque Module Installation

TORQUE MODULE INSTALLATION
This section describes how to install the Torque Module(s), connect the load cell cable, and install the side and top brake covers.

INSTALLING THE TORQUE MODULE

You will need the following part:
• 66104001 Torque Module
1 Verify the main dyno power is disconnected. 2 Turn off the main power switch on the CPU Module and unplug the power cord. 3 Remove the dust cover from the existing top module.
Figure 4-17: Disconnect Power and Remove the Dust Cover
4-16
In Ground Model 424x/424xLC2 Automotive Dynamometer Installation Guide
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