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WHEEL LOADER
WA470 -6R WA480 -6R SERIAL NUMBERS
WA470- 10001 WA480- 10001
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Notice of revision
Notice of revision 9th revision The affected pages are indicated by the use of the following marks. It is requested that necessary actions must be taken to these pages according to the list below.
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WA470-6R, WA480-6R (09)
This is the sample of the manual Click on the download link for complete manual
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40-618 40-619 40-620 40-621 40-622 40-623 40-624 40-625 40-626 40-627 40-628 40-629 40-630 40-631 40-632 40-633 40-634 40-635 40-636 40-637 40-638 40-639 40-640 40-641 40-642 40-643 40-644 40-645 40-646 40-647 40-648 40-649 40-650 40-651 40-652 40-653 40-654 40-655 40-656 40-657 40-658 40-659 40-660 40-661 40-662 40-663 40-664 40-665 40-666 40-667 40-668 40-669
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WA470-6R, WA480-6R (09)
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Table of contents
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00 Index and foreword Table of contents .................................................................................................................................. 00-2 Foreword and general information ..................................................................................................... 00-15 Safety notice ................................................................................................................................... 00-15 How to read the shop manual ......................................................................................................... 00-20 Explanation of terms for maintenance standard ............................................................................. 00-22 Handling of electric equipment and hydraulic component .............................................................. 00-24 Handling of connectors newly used for engines ............................................................................. 00-33 How to read electric wire code........................................................................................................ 00-36 Precautions when carrying out operation........................................................................................00-39 Method of disassembling and connecting push-pull type coupler................................................... 00-42 Standard tightening torque table ..................................................................................................... 00-45 Conversion table ............................................................................................................................. 00-49 01 Specification Specification and technical data .................................................................................................... 01-3 Specification dimension drawing................................................................................................. 01-3 Specifications.............................................................................................................................. 01-4 Weight table ................................................................................................................................ 01-8 Table of fuel, coolant and lubricants ........................................................................................... 01-10 10 Structure, function and maintenance standard Engine and cooling system ............................................................................................................ 10-4 Engine mount and transmission mount....................................................................................... 10-4 Cooling system ........................................................................................................................... 10-5 Cooling fan pump........................................................................................................................ 10-6 Cooling fan motor........................................................................................................................ 10-14 Power train ..................................................................................................................................... 10-21 Power train.................................................................................................................................. 10-21 Power train system diagram ....................................................................................................... 10-22 Drive shaft................................................................................................................................... 10-24 Power train piping diagram ......................................................................................................... 10-25 Torque converter......................................................................................................................... 10-26 Transmission............................................................................................................................... 10-34 Transmission control valve ......................................................................................................... 10-52 ECMV.......................................................................................................................................... 10-56 Main relief valve and torque converter relief valve...................................................................... 10-68 Axle ............................................................................................................................................. 10-70 Differential................................................................................................................................... 10-74 Limited slip differential ................................................................................................................ 10-79 Final drive ................................................................................................................................... 10-86 Steering system ............................................................................................................................. 10-92 Steering component layout drawing............................................................................................ 10-92 Steering column .......................................................................................................................... 10-93 Steering pump............................................................................................................................. 10-94 Steering valve ............................................................................................................................. 10-107 Orbit-roll valve............................................................................................................................. 10-124 Stop valve ................................................................................................................................... 10-132 Steering relief valve .................................................................................................................... 10-133 Steering cylinder ......................................................................................................................... 10-134 Emergency steering motor.......................................................................................................... 10-136 Emergency steering pump .......................................................................................................... 10-137 00-2
WA470-6R, WA480-6R
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Joystick steering lever linkage .................................................................................................... 10-138 Electrical steering lever............................................................................................................... 10-139 Joystick EPC valve ..................................................................................................................... 10-140 Brake system ................................................................................................................................. 10-142 Brake component layout drawing ............................................................................................... 10-142 Component layout of brake cooling system............................................................................. 10-142-1 Brake cooling control system................................................................................................... 10-142-2 Charge valve............................................................................................................................... 10-143 Brake valve ................................................................................................................................. 10-150 Accumulator (for brake) .............................................................................................................. 10-155 Slack adjuster ............................................................................................................................. 10-156 Brake .......................................................................................................................................... 10-158 Parking brake control.................................................................................................................. 10-163 Parking brake.............................................................................................................................. 10-164 Parking brake solenoid valve...................................................................................................... 10-166 Emergency parking brake release valve..................................................................................... 10-168 Brake cooling oil cooler............................................................................................................... 10-169 Brake cooling pump motor ...................................................................................................... 10-169-1 Brake cooling fan .................................................................................................................... 10-169-2 Undercarriage and frame ............................................................................................................... 10-170 Axle mount and center hinge pin ................................................................................................ 10-170 Tires............................................................................................................................................ 10-174 Hydraulic system ........................................................................................................................... 10-176 Hydraulic component layout drawing .......................................................................................... 10-176 Work equipment control lever linkage......................................................................................... 10-179 Hydraulic tank ............................................................................................................................. 10-182 Power train pump........................................................................................................................ 10-184 Work equipment pump................................................................................................................ 10-186 Work equipment control valve .................................................................................................... 10-206 CLSS .......................................................................................................................................... 10-217 Each function and operation of each valve ................................................................................. 10-222 PPC valve ................................................................................................................................... 10-236 Accumulator (for PPC circuit) ..................................................................................................... 10-244 Accumulator (for power train circuit) ........................................................................................... 10-245 Accumulator (for ECSS) ............................................................................................................. 10-246 Work equipment PPC cut-off solenoid valve .............................................................................. 10-247 Work equipment............................................................................................................................. 10-250 Work equipment linkage ............................................................................................................. 10-250 Bucket......................................................................................................................................... 10-253 Bucket positioner and boom kick-out.......................................................................................... 10-254 Work equipment cylinder ............................................................................................................ 10-260 Cab and its attachments ................................................................................................................ 10-261 Cab ............................................................................................................................................. 10-261 Air conditioner............................................................................................................................. 10-262 Electrical system ............................................................................................................................ 10-280 Machine monitor system............................................................................................................. 10-280 Machine monitor ......................................................................................................................... 10-284 Electrical system (Transmission controller system).................................................................... 10-316 Transmission controller............................................................................................................... 10-356 Electrical system (Work equipment controller system) ............................................................... 10-358 Work equipment controller.......................................................................................................... 10-364 Electric transmission control ....................................................................................................... 10-366 Kickdown switch and hold switch................................................................................................ 10-370 Load meter cancel switch and load meter subtotal switch.......................................................... 10-370 WA470-6R, WA480-6R (07)
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Multi-function knob...................................................................................................................... 10-371 Joystick steering knob................................................................................................................. 10-372 KOMTRAX system...................................................................................................................... 10-374 Engine starting circuit.................................................................................................................. 10-376 Engine stopping circuit................................................................................................................ 10-378 Preheating circuit ........................................................................................................................ 10-379 Engine power mode selector circuit ............................................................................................ 10-380 Engine output derating function .................................................................................................. 10-381 Automatic warm-up function ....................................................................................................... 10-381 Parking brake circuit ................................................................................................................... 10-382 Sensor......................................................................................................................................... 10-384 20 Standard value table Standard service value table.......................................................................................................... Standard value table for engine .................................................................................................. Standard value table for chassis.................................................................................................
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30 Testing and adjusting Related information on testing and adjusting................................................................................. Tools for testing, adjusting, and troubleshooting ........................................................................ Testing engine speed.................................................................................................................. Engine and cooling system ............................................................................................................ Testing exhaust gas color ........................................................................................................... Testing exhaust temperature ...................................................................................................... Adjusting valve clearance ........................................................................................................... Testing compression pressure.................................................................................................... Testing blow-by pressure............................................................................................................ Testing engine oil pressure......................................................................................................... Testing intake air (boost) pressure ............................................................................................. Handling fuel system equipment................................................................................................. Releasing residual pressure in fuel system ................................................................................ Testing fuel pressure .................................................................................................................. Testing fuel return and leak amount ........................................................................................... Bleeding air from fuel circuit........................................................................................................ Testing fuel circuit for leakage .................................................................................................... Handling of reduced cylinder mode operation ............................................................................ Handling of no injection cranking operation ................................................................................ Handling of controller voltage circuit ........................................................................................... Check of muffler and muffler stack for looseness and damage .................................................. Check of muffler function ............................................................................................................ Check of installed condition of cylinder head and manifolds ...................................................... Check of engine piping for damage and looseness .................................................................... Testing and adjusting air conditioner compressor belt tension ................................................... Testing and adjusting alternator belt tension .............................................................................. Power train ..................................................................................................................................... Adjusting transmission speed sensor ......................................................................................... Adjusting directional lever length ................................................................................................ Adjusting gear shift lever length.................................................................................................. Testing FNR lever and gear shift lever ....................................................................................... Testing and adjusting power train oil pressure ........................................................................... Procedure for flushing torque converter and transmission hydraulic circuit................................ Method of moving machine when transmission valve is broken ................................................. Check of axle final drive for oil leakage ...................................................................................... Check of drive shafts for looseness, play and damage ..............................................................
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