Caterpillar Performance Handbook, January 2017, SEBD0351-47

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Edition 47 12-1

12

CONTENTS

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2 Chassis Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-12 Weight Distribution . . . . . . . . . . . . . . . . . . . . . . 12-13 GVWR and GCWR . . . . . . . . . . . . . . . . . . . . . . 12-14 Frame Selection . . . . . . . . . . . . . . . . . . . . . . . . . . 12-15 Selecting Gear Ratios for Transmission and Axles. . . . . . . . . . . . . . . . . . 12-18 Engine Selection . . . . . . . . . . . . . . . . . . . . . . . . . 12-19 Driveline Braking . . . . . . . . . . . . . . . . . . . . . . . . 12-23 Appendix A Reference Equations (English Units) . . . . . . . 12-24 Appendix B Vehicle Identification Number (VIN Structure) . . . . . . . . . . . . . . . . . . . . . . 12-25 Appendix C CT13 Torque Curves . . . . . . . . . . . . . . . . . . . . 12-26 Appendix D Transmission Specifications . . . . . . . . . . . . . . 12-32 Appendix E Rear Axle Specifications . . . . . . . . . . . . . . . . . 12-36 Appendix F Front Axle Specifications . . . . . . . . . . . . . . . . 12-38 Lift Axle Specifications . . . . . . . . . . . . . . . . . . 12-38 Appendix G CX31 Startability Reference Guide . . . . . . . . 12-39 Appendix H Front Tire Specifications. . . . . . . . . . . . . . . . . 12-40 Appendix I Rear Tire Specifications . . . . . . . . . . . . . . . . . 12-42 Appendix J Front Suspension Specifications . . . . . . . . . . . 12-46 Appendix K Rear Suspension Details . . . . . . . . . . . . . . . . . 12-48 Appendix L Rear Suspension Specifications. . . . . . . . . . . . 12-51 Appendix M Power Take Off Specifications . . . . . . . . . . . . 12-52

PREFACE

This handbook is a guide that can be used as a first step

when configuring a truck. It allows the user to examine

options and variables that affect performance of the drive-

line and frame.

Trucks are highly configurable machines. There are

numerous choices for every major component (frame,

engine, transmission, tires, axles, suspension, gear ratios,

etc.). It’s critical not to over or under spec a truck for an

application. A well spec’d truck is typically a balance

between variables like cost, GVWR, maximum speed,

gradeability, startability, and fuel economy. There are

also intangibles like driver preference, serviceability,

and customer history to consider.

The equations and methodology in this handbook are

provided to help select components and predict how

they will work together to create a truck with the desired

level of performance.

Time spent investigating the customers needs is criti-

cal for creating a well configured truck that will meet or

exceed customer expectations. Normally, experts with

years of experience and/or classroom training perform

this type of work.

ON-HIGHWAY TRUCKS

(

for Sale in North America Only)