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DX140LC
Shop Manual
K1034080E
Serial Number 5001 and Up
DOOSAN reserves the right to improve our products in a continuing process to provide the best possible
product to the market place. These improvements can be implemented at any time with no obligation to
change materials on previously sold products. It is recommended that consumers periodically contact their
distributors for recent documentation on purchased equipment.
This documentation may include attachments and optional equipment that is not available in your
machine's package. Please call your distributor for additional items that you may require.
Illustrations used throughout this manual are used only as a representation of the actual piece of
equipment, and may vary from the actual item.
K1034080E Shop Manual
Copyright 2007 DOOSAN
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Summary of Contents for Daewoo Doosan DX140LC
- Page 1 DX140LC Shop Manual K1034080E Serial Number 5001 and Up DOOSAN reserves the right to improve our products in a continuing process to provide the best possible product to the market place. These improvements can be implemented at any time with no obligation to change materials on previously sold products.
- Page 2 Table of Contents Safety Track Excavator Safety................. SP000014 Specifications Specification for DX140LC..............SP001313 General Maintenance General Maintenance Procedures ............SP000016 Standard Torques ................. SP000813 Upper Structure Cabin ....................SP000943 Counterweight..................SP000940 Fuel Tank....................SP001320 Fuel Transfer Pump ................SP000021 Swing Bearing..................SP000022 Swing Reduction Gear................
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Page 3: Electrical System
Swing Motor..................SP000985 Travel Moter..................SP001346 Main Pump.................... SP001329 Main Control Valve ................SP001029 Remote Control Valve (Work Lever / Joystick) ........SP000069 Travel Control Valve (with Damper)............SP000070 Solenoid Valve Assembly ..............SP000445 Breaker EPPR Valve (Opt) ..............SP000192 Hydraulic Schematic (DX140LC) ............ - Page 4 SP000014 TRACK EXCAVATOR SAFETYSP000014 Track Excavator Safety Edition 1 Track Excavator Safety SP000014 Page 1...
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Page 5: Safety Precautions
SAFETY PRECAUTIONS CAUTION! Follow safety recommendations safe shop practices outlined in the front of this manual or those contained within this section. Always use tools and equipment that are in good working order. Use lifting and hoisting equipment capable of safely handling load. - Page 6 TO THE OPERATOR OF A EXCAVATOR DANGER! Unsafe use of the excavator could lead to serious injury death. Operating procedures, maintenance equipment practices or traveling or shipping methods that do not follow the safety guidelines on the following pages could cause serious, potentially fatal injuries or extensive damage to the machine or nearby property.
- Page 7 WARNING! Improper operation and maintenance of this machine can be hazardous and could result in serious injury or death. Operator and maintenance personnel should read this manual thoroughly before beginning operation maintenance. Keep this manual in the storage compartment to the rear of the operator's seat, and have all personnel involved in working on the machine read the manual periodically.
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Page 8: Learn The Signal Words Used With The Safety Alert Symbol
SAFETY ALERT SYMBOL Be Prepared - Get to Know All Operating and Safety Instructions. This is the Safety Alert Symbol. Wherever it appears in this manual or on safety signs on the machine you should be alert to the potential for personal injury or accidents. - Page 9 Safety precautions are described in SAFETY from page -11 on. DOOSAN cannot predict every circumstance that might involve a potential hazard in operation and maintenance. Therefore the safety messages in this manual and on the machine may not include all possible safety precautions. If any procedures or actions not specifically recommended or allowed in this manual are used, you must be sure that you and others can do such procedures and actions safely and...
- Page 10 SP000921 SWING REDUCTION GEARSP000921 Swing Reduction Gear Edition 1 Swing Reduction Gear SP000921 Page 1...
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Page 11: General Description
GENERAL DESCRIPTION Theory of Operation The swing motor final drive is a two-stage planetary gearbox with two planet gears, two sun gears and two-stage output reduction. The planetary gear engages the ring gear. The pinion gear is connected to the output shaft and spline. The final drive reduces swing motor rpm to increase swing motor output torque. - Page 12 REASSEMBLY Parts List FG005349 Figure 1 Swing Reduction Gear SP000921 Page 8...
- Page 13 Reference Reference Description Description Number Number Casing Driveshaft Roller Bearing Ring Gear Roller Bearing Planetary Gear Socket Bolt Sun Gear 2 Oil Seal Planetary Gear Plug Sun Gear 1 Plug Carrier 2 Spring Pin Carrier 1 Retainer Ring Pin Assembly Retainer Ring Pin Assembly Ring...
- Page 14 SHRINKAGE FITTING OF SHAFT AND FLEXIBLE BEARING Washing of shaft Remove fluids like anticorrosive fluid applied to the shaft and use an air conditioner to remove foreign substances. Insert the support plate and the NILOS ring into the prepared shaft as shown in the figure and heat bearings (#22314, 2109-1041) on the heater.
- Page 15 Figure 4 Figure 5 When bearing is heated up to 90°C - 100°C, remove it from the heater, hold it with both hands, and insert it into the shaft evenly. To do so, slowly insert bearing 4-5 mm that it seats itself and then push it strongly to contact the NILOS ring.
- Page 16 Download the full PDF manual instantly. Our customer service e-mail: aservicemanualpdf@yahoo.com...
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