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Komatsu WA470-5 Shop Manual
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Komatsu WA470-5 Shop Manual

Komatsu WA470-5 Shop Manual

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MACHINE MODEL
WA470-5
WA480-5
•
This shop manual may contain attachments and optional equipment that are not available
in your area. Please consult your local Komatsu distributor for those items you may
require.
Materials and specifications are subject to change without notice.
•
WA470-5, WA480-5 mounts the SAA6D125E-3 engine.
For details of the engine, see the 125-3 Series Engine Shop Manual.
© 2017
All Rights Reserved
Printed in Japan 10-17 (01)
SERIAL NUMBER
70001 and up
80001 and up
SEBM024414
00-1
(14)

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Summary of Contents for Komatsu WA470-5

  • Page 1 80001 and up • This shop manual may contain attachments and optional equipment that are not available in your area. Please consult your local Komatsu distributor for those items you may require. Materials and specifications are subject to change without notice.
  • Page 2 OTHERS ......... 90-1 WA470-5...
  • Page 3 (12) 10-76 (12) 10-108 (12) 00-21 10-15 10-44 (12) 10-77 (12) 10-110 (12) 00-22 10-16 10-45 (12) 10-78 10-111 (12) 10-17 (12) 10-46 (12) 10-79 (12) 10-112 (12) 10-18 10-47 (12) 10-80 10-114 00-2-1 WA470-5 (14) Find manuals at https://best-manuals.com...
  • Page 4 10-283 (12) 10-325 (12) 10-161 (12) 10-200 (12) 10-246 (12) 10-284 (12) 10-326 (12) 10-162 10-201 (12) 10-247 (12) 10-285 (12) 10-328 (12) 10-163 (12) 10-202 (12) 10-248 (12) 10-286 (12) 10-329 (12) 00-2-2 WA470-5 (14) Find manuals at https://best-manuals.com...
  • Page 5 (12) 20-103 (12) 20-143 (12) 20-229 20-272 20-334 (12) 20-104 (12) 20-144 (12) 20-230 20-273 20-335 (12) 20-105 (12) 20-145 (12) 20-231 20-274 20-336 (12) 20-106 (12) 20-146 (12) 20-232 20-275 20-338 (12) 00-2-3 WA470-5 (14) Find manuals at https://best-manuals.com...
  • Page 6 (12) 20-678 (12) 20-428 (12) 20-474 (12) 20-517 (12) 20-635 (12) 20-679 (12) 20-429 (12) 20-475 (12) 20-518 (12) 20-636 (12) 20-680 (12) 20-430 (12) 20-476 (12) 20-520 (12) 20-637 (12) 20-681 (12) 00-2-4 WA470-5 (14) Find manuals at https://best-manuals.com...
  • Page 7 20-1107 (12) 30-8 (11) 20-816 20-863 (12) 20-916 (12) 20-1108 30-9 (12)) 20-817 20-864 (12) 20-917 20-1109 30-10 (12) 20-818 20-865 (12) 20-918 20-1110 30-11 (12) 20-819 20-866 (12) 20-919 20-1111 (12) 30-12 00-2-5 WA470-5 (14) Find manuals at https://best-manuals.com...
  • Page 8 30-103 (12) 30-145-1 (14) 30-180 30-54 (12) 30-104 (12) 30-145-2 (14) 30-181 30-55 (12) 30-105 (12) 30-146 (14) 30-182 30-56 (12) 30-106 (12) 30-147 (14) 30-183 30-57 (12) 30-107 (12) 30-148 (14) 30-184 00-2-6 WA470-5 (14) Find manuals at https://best-manuals.com...
  • Page 9 Proper service and repair is extremely important for safe machine operation. The service and repair techniques recommended by Komatsu and described in this manual are both effective and safe. Some of these techniques require the use of tools specially designed by Komatsu for the specific purpose.
  • Page 10 SAFETY SAFETY NOTICE PRECAUTIONS DURING WORK 19.Be sure to assemble all parts again in their origi- nal places. 11.When removing the oil filler cap, drain plug or Replace any damaged parts with new parts. hydraulic pressure measuring plugs, loosen • When installing hoses and wires, be sure them slowly to prevent the oil from spurting out.
  • Page 11 FOREWORD GENERAL FOREWORD GENERAL This shop manual has been prepared as an aid to improve the quality of repairs by giving the serviceman an accurate understanding of the product and by showing him the correct way to perform repairs and make judge- ments.
  • Page 12 DISTRIBUTION AND UPDATING Any additions, amendments or other changes will be Symbol Item Remarks sent to KOMATSU distributors. Get the most up-to- date information before you start any work. Special safety precautions Safety are necessary when per- forming the work.
  • Page 13 FOREWORD HOISTING INSTRUCTIONS HOISTING INSTRUCTIONS HOISTING k Heavy parts (25 kg or more) must be lifted Slinging near the edge of the hook may cause the rope to slip off the hook during hoisting, and a serious accident can result. Hooks have max- with a hoist, etc.
  • Page 14 FOREWORD METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER k Before carrying out the following work, release Type 1 the residual pressure from the hydraulic tank. For details, see TESTING AND ADJUSTING, Releasing residual pressure from hydraulic tank.
  • Page 15 FOREWORD METHOD OF DISASSEMBLING, CONNECTING PUSH-PULL TYPE COUPLER Type 2 Type 3 1) Hold the mouthpiece of the tightening portion 1) Hold the mouthpiece of the tightening portion and push body (2) in straight until sliding pre- and push body (2) in straight until sliding pre- vention ring (1) contacts contact surface a of vention ring (1) contacts contact surface a of the hexagonal portion at the male end.
  • Page 16 ★ The recommended coating materials such as adhesives, gasket sealants and greases used for disassembly and assembly are listed below. ★ For coating materials not listed below, use the equivalent of products shown in this list. Category Komatsu code Part No. Q’ty Container Main applications, features •...
  • Page 17 FOREWORD COATING MATERIALS Category Komatsu code Part No. Q’ty Container Main applications, features • Used as lubricant for sliding portion (to LM-G 09940-00051 60 g prevent from squeaking). Molybdenum • Used to prevent seizure or scuffling of the disulphide thread when press fitting or shrink fitting.
  • Page 18 FOREWORD STANDARD TIGHTENING TORQUE STANDARD TIGHTENING TORQUE STANDARD TIGHTENING TORQUE TABLE (WHEN USING TORQUE WRENCH) ★ In the case of metric nuts and bolts for which there is no special instruction, tighten to the torque given in the table below. Tightening torque Thread diameter Width across...
  • Page 19 FOREWORD STANDARD TIGHTENING TORQUE TABLE OF TIGHTENING TORQUES FOR SPLIT FLANGE BOLTS ★ In the case of split flange bolts for which there is no special instruction, tighten to the torque given in the table below. Thread diameter Width across flat Tightening torque 59 –...
  • Page 20 FOREWORD STANDARD TIGHTENING TORQUE TIGHTENING TORQUE FOR 102 AND 114 ENGINE SERIES 1) BOLT AND NUTS Use these torques for bolts and nuts (unit: mm) of Cummins Engine. Thread diameter Tightening torque 10 0 2 1.02 0 0.20 24 0 4 2.45 0 0.41 43 0 6 4.38 0 0.61...
  • Page 21 FOREWORD ELECTRIC WIRE CODE ELECTRIC WIRE CODE In the wiring diagrams, various colors and symbols are employed to indicate the thickness of wires. This wire code table will help you understand WIRING DIAGRAMS. Example: 5WB indicates a cable having a nominal number 5 and white coating with black stripe. CLASSIFICATION BY THICKNESS Copper wire Current...
  • Page 22 FOREWORD CONVERSION TABLE CONVERSION TABLE METHOD OF USING THE CONVERSION TABLE The Conversion Table in this section is provided to enable simple conversion of figures. For details of the method of using the Conversion Table, see the example given below. EXAMPLE •...
  • Page 23 FOREWORD CONVERSION TABLE Millimeters to Inches 1 mm = 0.03937 in 0.236 0.276 0.315 0.354 0.039 0.079 0.118 0.157 0.197 0.630 0.669 0.709 0.748 0.394 0.433 0.472 0.512 0.551 0.591 0.787 0.827 0.866 0.906 0.945 0.984 1.024 1.063 1.102 1.142 1.181 1.220 1.260...
  • Page 24 FOREWORD CONVERSION TABLE Liter to U.S. Gallon 1l = 0.2642 U.S. Gal 1.585 1.849 2.113 2.378 0.264 0.528 0.793 1.057 1.321 4.227 4.491 4.755 5.019 2.642 2.906 3.170 3.434 3.698 3.963 5.283 5.548 5.812 6.076 6.340 6.604 6.869 7.133 7.397 7.661 7.925 8.189...
  • Page 25 FOREWORD CONVERSION TABLE kgm to ft. lb 1 kgm = 7.233 ft. lb 28.9 36.2 43.4 50.6 57.9 65.1 14.5 21.7 137.4 72.3 79.6 86.8 94.0 101.3 108.5 115.7 123.0 130.2 209.8 144.7 151.9 159.1 166.4 173.6 180.8 188.1 195.3 202.5 217.0 224.2...
  • Page 26 FOREWORD CONVERSION TABLE kg/cm to lb/in 1kg/cm = 14.2233 lb/in 28.4 42.7 56.9 71.1 85.3 99.6 113.8 128.0 14.2 170.7 184.9 199.1 213.4 227.6 241.8 256.0 270.2 142.2 156.5 369.8 384.0 398.3 412.5 284.5 298.7 312.9 327.1 341.4 355.6 512.0 526.3 540.5 554.7...
  • Page 27 FOREWORD CONVERSION TABLE Temperature Fahrenheit-Centigrade Conversion ; a simple way to convert a Fahrenheit temperature reading into a Cen- tigrade temperature reading or vice versa is to enter the accompanying table in the center or boldface col- umn of figures. These figures refer to the temperature in either Fahrenheit or Centigrade degrees.
  • Page 28 FOREWORD UNITS UNITS In this manual, the measuring units are indicated with Internatinal System of units (SI). As for reference, conventionally used Gravitational System of units are indicated in parentheses { Example: N {kg} Nm {kgm} MPa {kg/cm kPa {mmH kPa {mmHg} kW/rpm {HP/rpm} g/kWh {g/HPh}...
  • Page 29 Weight table ......01-7 List of lubricants and coolant ....01-9 01-1 WA470-5...
  • Page 30 GENERAL GENERAL ASSEMBLY DRAWING GENERAL ASSEMBLY DRAWING Item Unit WA470-5 WA480-5 Overall length 8,815 9,155 Overall height 3,395 3,500 Overall height when bucket is raised 5,895 6,175 Overall width 2,920 3,010 Min. ground clearance Bucket width 3,170 Dumping clearance (tip of BOC)
  • Page 31 GENERAL SPECIFICATIONS SPECIFICATIONS Machine model WA470-5 WA480-5 Serial No. 70001 and up 80001 and up Operating weight 22,520 24,065 Distribution (front) SAE travel posture 10,260 10,335 Distribution (rear) SAE travel posture 11,260 13,730 Bucket capacity (piled) m³ Rated load kN{kg} 65.9{6,720}...
  • Page 32 GENERAL SPECIFICATIONS SPECIFICATIONS Machine model WA470-5 WA480-5 Serial No. 70001 and up 80001 and up Model Komatsu SAA6D125E-3 4-cycle, water-cooled, in-line, 6-cylinder, Type direct injection with turbocharger, aftercooler No. of cylinders - bore x stroke 6 - 125 x 150...
  • Page 33 GENERAL SPECIFICATIONS Machine model WA470-5 WA480-5 Serial No. 70001 and up 80001 and up Type Articulated steering Control Hydraulic control Torque converter pump • Type Gear type l /min • Delivery Steering pump • Type Gear type l /min • Delivery Hydraulic pump •...
  • Page 34 GENERAL SPECIFICATIONS Machine model WA470-5 WA480-5 Serial No. 70001 and up 80001 and up Work equipment control valve • Type 2-spool type • Set pressure MPa {kg/cm²} 20.6 {210} Travel control valve • Type Spool type • Set pressure MPa {kg/cm²} 20.6 {210}...
  • Page 35 GENERAL WEIGHT TABLE WEIGHT TABLE k This weight table is a guide for use when transporting or handling components. Unit: kg Machine model WA470-5 WA480-5 Serial No. 70001 and up 80001 and up Engine (without coolant and oil) 1,200 1,200...
  • Page 36 GENERAL WEIGHT TABLE Unit: kg Machine model WA470-5 WA480-5 Serial No. 70001 and up 80001 and up Air conditioner unit (If equipped) 12.5 12.5 Operator’s seat Floor board Oil cooler Torque convertor oil cooler Cooling fan drive pump Cooling fan drive motor...
  • Page 37 GENERAL TABLE OF FUEL, COOLANT AND LUBRICANT TABLE OF FUEL, COOLANT AND LUBRICANT For details of notes (Note 1, Note 2, ---) in the table, see the Operation and Maintenance Manual. 01-9 WA470-5 (12)
  • Page 38 TABLE OF FUEL, COOLANT AND LUBRICANT ★ As engine oil for the engine oil pan, SAE10W30 (API CH-4, CI-4) may be used instead of SAE10W30DH, and SAE15W40 (API CH-4, CI-4) may be used instead of SAE15W40DH. Unit: WA470-5 WA480-5 CAPACITY Specified...
  • Page 39 PARKING BRAKE ........10-140 SENSORS ............10-346 Note: There are cases that Lift arm is mentioned Boom, Right direction switch is mentioned R direction switch, and ECSS is mentioned Boom damper, however they are shown the same thing. 10-1 WA470-5 (12)
  • Page 40 Total heat radiating area (m 66.30 6.71 17.55 1.829 Pressure valve opening pressure 68.6 — — — (kPa {kg/cm {0.7} Vacuum valve opening pressure 0 – 4.9 — — — (kPa {kg/cm {0 – 0.05} *1: Shows the element size. 10-2 WA470-5...
  • Page 41 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD ENGINE MOUNT, TRANSMISSION MOUNT ENGINE MOUNT, TRANSMISSION MOUNT Unit: mm Check item Criteria Remedy Clearance between transmis- sion mount bracket and adjust- 1 – 1.5 Adjust ment bolt 10-3 WA470-5 (12)
  • Page 42 (7) and rear drive shaft (5), and is connected to the input shaft of transmission (1). transmitted to front axle (8) and rear axle (4) to drive the wheels. • The transmission has 6 hydraulically operated clutches. These provide 4 FORWARD and REVERSE speeds. 10-4 WA470-5...
  • Page 43 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD POWER TRAIN SYSTEM DIAGRAM POWER TRAIN SYSTEM DIAGRAM Without torque converter lock-up clutch 10-5 WA470-5...
  • Page 44 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD POWER TRAIN SYSTEM DIAGRAM With torque converter lock-up clutch 10-6 WA470-5...
  • Page 45 (2) and (13), and is transmitted through the differential mechanism to the sun gear shaft. • The power from the sun gear is further reduced by planetary-type final drive (11) and is trans- mitted to the wheels through the axle shaft. 10-7 WA470-5...
  • Page 46 With this design, the drive shafts have universal joints and flange bearings that enable them to han- dle any changes in the angle and length. 10-8 WA470-5 (12)
  • Page 47 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD TORQUE CONVERTER, TRANSMISSION PIPING TORQUE CONVERTER, TRANSMISSION PIPING Torque converter charging pump 5. Last-chance filter 2. Torque converter 6. Transmission control valve 3. Torque converter oil cooler Transmission 4. Hydraulic oil cooler 8. Oil filter 10-9 WA470-5...
  • Page 48 Without lock-up clutch Breather 2. Housing 3. Mount for steering, switch, cooling fan drive pumps 4. Mount for torque converter charging, work equipment hydraulic, PPC pumps 5. Torque converter Specifications Type 3-element, 1-stage, 1-phase Stall torque ratio 2.39 10-10 WA470-5...
  • Page 49 STRUCTURE AND FUNCTION, MAINTENANCE STANDARD TORQUE CONVERTER 1. Flywheel A. Inlet port 2. Drive case B. Outlet port 3. Turbine 4. Pump 5. PTO drive gear 6. Stator shaft Transmission input shaft 8. Stator 10-11 WA470-5...
  • Page 50 Inside diameter of PTO gear seal +0.035 110.5 ring sliding portion +0.035 -0.00 Width -0.10 Wear of stator shaft seal ring Thickness ±0.1 Replace Backlash of PTO drive gear and 0.17 – 0.45 drive gear 10-12 WA470-5 (12)
  • Page 51 This as a preview PDF file from best-manuals.com Download full PDF manual at best-manuals.com...

This manual is also suitable for:

Wa480-57000180001