Caterpillar Performance Handbook, January 2017, SEBD0351-47

ON-HIGHWAY TRUCKS ( for Sale in North America Only)

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.

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Edition 47 12-1