CHAPTER 1 GENERAL INFORMATION - TM-5-3820-256-24-3

TM-5-3820-256-24-3 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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CHAPTER 1 GENERAL INFORMATION 1-1 INTRODUCTION 1-1.1 Cautions and warnings. You will find CAUTIONS and WARNINGS in this manual. a. WARNINGS are to advise you to be particularly careful in order to avoid personal injury accidents. b. CAUTIONS are provided to prevent you from making an error which could result in damage to the vehicle and could possibly cause personal injury or property damage. c. Read this manual before operating vehicle. d. This manual will familiarize you with your vehicle and provide sufficent information to perform minor services necessary for continued efficient operation. Study this manual carefully before you operate the vehicle. 1-2 COMPONENT CODE NUMBERS 1-2.1 Codes are the basis for identifying the components used on Navistar trucks. They are used by sales personnel ordering the truck, by manufacturing to build that truck and by parts personnel to service the truck. Many items in this manual are identified by codes or by model. Therefore, it is important to understand their meaning. 1-2.2 THE CODE STRUCTURE IS AS FOLLOWS: 00 000 0000 GROUP NUMBER All International truck parts are divided into 17 groups, numbered from 01 to 17. Code sheets in some instances show group numbers 17 through 22 for wheels, rims and related items. UNIT NUMBER Unit numbers identify the various components within a group. These unit numbers are also used as International model numbers. They are sometimes directly significant, as in rear axles, where the first digit of the unit number indicates the type of axle: 0 for single reduction, 1 for two-speed, 2 for a double reduction and 3 or 4 for a tandem. ASSIGNMENT NUMBER This number may indicate model differences, different sources of supply, manufacture at different facilities, different equipment applications or design changes. You will need this assignment number only in the few cases where the service parts catalog listings are broken down by assignment numbers. In all other cases you can ignore these last four digits. 1-1/(1-2 blank)

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