Daewoo B20S-2 B25S-2 B30S-2 Lift Truck Power Train Service Manual (EN)

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SB2025E01 Aug. 1999 Specifications Systems Operation Testing & Adjusting Disassembly & Assembly Lift Trucks Power Train B20S-2, B25S-2, B30S-2 BC20S-2, BC25S-2, BC30S-2

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Important Safety Information Most accidents involving product operation, maintenance and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary train- ing, skills and tools to perform these functions properly. Read and understand all safety precautions and warnings before operating or performing lubrication, maintenance and repair on this product. Basic safety precautions are listed in the TSafetyУ section of the Service or Technical Manual.

Additional safety precautions are listed in the TSafetyУ section of the owner/operation/maintenance publication. Specific safety warnings for all these publications are provided in the description of operations where hazards exist. WARNING labels have also been put on the product to provide instructions and to identify specific hazards. If these hazard warnings are not heeded, bodily injury or death could occur to you or other persons. Warnings in this publication and on the product labels are identified by the following symbol. WARNING Improper operation, lubrication, maintenance or repair of this product can be dangerous and could result in injury or death.

Do not operate or perform any lubrication, maintenance or repair on this product, until you have read and understood the operation, lubrication, maintenance and repair information. Operations that may cause product damage are identified by NOTICE labels on the product and in this publica- tion. DAEWOO cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are therefore not all inclusive. If a tool, procedure, work method or operating technique not specifically recommended by DAEWOO is used, you must satisfy yourself that it is safe for you and others.

You should also ensure that the product will not be damaged or made unsafe by the operation, lubri- cation, maintenance or repair procedures you choose. The information, specifications, and illustrations in this publication are on the basis of information available at the time it was written. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service given to the product. Obtain the complete and most current information before starting any job. DAEWOO dealers have the most current information avail- able. 1

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Index Systems Operation Disassembly & Assembly Drive Motor............................................................... 6 Final Drive ................................................................ 8 General Information.................................................. 5 Power Transfer Group..............................................

7 Brakes, Brake Adjuster And Wheel Cylinder...........36 Final Drives And Hubs.............................................45 Oil Cooled Disc Type Brake ....................................48 Testing And Adjusting Power Transfer Group.............................................39 Drive Motor..............................................................14 Armature Terminal Test ......................................19 Armature Tests...................................................15 Brush Holder Test ..............................................19 Brush Life Estimate............................................20 Commutator Inspection......................................17 Field Coil And Terminal Tests.............................18 Motor Brushes....................................................14 Thermal Switch Tests.........................................20 Final Drive ...............................................................27 Wheel Bearing Adjustment.................................27 Power Transfer Group Adjustments ........................21 Pinion Bearing Adjustment.................................24 Pinion Depth Check ...........................................24 Pinion Installation...............................................22 Power Transfer Group........................................21 Power Transfer Group Bearing And Gear Clearance (Backlash) Adjustments...............25 Troubleshooting........................................................

9 Checks During Operation ................................... 9 Drive Motor.................................................... 9 Power Transfer Group And Final Drive ........13 Visual Checks .....................................................

9 Specifications Drive Axle Mounting Group .....................................33 Drive Motor..............................................................30 Drive Tire Installation...............................................33 Final Drive ...............................................................32 General Tightening Torque......................................28 Power Transfer Group.............................................31 Power Train Index 3

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Systems Operation General Information Power Flow (1) Final drive (2) Power transfer group (3) Drive motor The power train for the B, BC MODEL Lift Trucks consists of three main components: drive motor (3), power transfer group (2) and final drive (1). Electric storage batteries are used as a power source for drive motor (3). The drive motor turns power transfer group (2). The power is sent through the power transfer group to the axles. The axle turns final drive (1), which is part of the drive wheels. Power Train Systems Operation 5

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