SEN05654-01
WHEEL LOADER
WA900 -3E0 SERIAL NUMBERS
60079
and up
Notice of revision
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WA900-3E0 (01)
Revision number
1
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90-3 90-4 90-5 90-6 90-7 90-9 90-11 90-13 90-14 90-15 90-16 90-17 90-19 90-21 90-22 90-23 90-24 90-25 90-27 1 2 q
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Colophon
(01)
WA900-3E0 (01)
SE N0565 402-00
0 1-
WA900-3 E0
WHEEL LOADER WA900-3E0
Sh op Ma nual
Machine model
Serial number
WA900-3E0
60079 and up
00 Index and foreword
WA900-3E0
0-1
0 -1
00-1
Table of Contents
Table of Contents
0 -2
00 Index and foreword Table of Contents.................................................................................................................... Table of Contents................................................................................................................. Foreword................................................................................................................................. Before reading this manual ..................................................................................................
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2 2 6 6
01 Specification Specification............................................................................................................................ Specification dimension drawing.......................................................................................... Specifications....................................................................................................................... Weight table ......................................................................................................................... Table of fuel, coolant and lubricants ....................................................................................
0101010101-
3 3 4 7 9
10 Structure and function Cooling system and related devices ....................................................................................... Cooling system .................................................................................................................... Hydraulic system..................................................................................................................... Power ladder system ........................................................................................................... Electrical system ..................................................................................................................... Power ladder controller ........................................................................................................ Rear view monitor system.................................................................................................... Engine service monitor system ............................................................................................ Parking brake circuit ............................................................................................................ Sensor..................................................................................................................................
10101010101010101010-
3 3 5 5 10 10 19 22 24 26
20 Standard value table Standard value table ............................................................................................................... 20Standard value table for chassis.......................................................................................... 20Standard value table for electrical system ........................................................................... 20-
3 3 4
30 Testing and adjusting Testing and adjusting .............................................................................................................. Inspection and adjustment of potentiometer ........................................................................ Ladder position calibration procedure.................................................................................. Procedure for testing diodes ................................................................................................
30303030-
3 3 4 6
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4 4 5 7 9 9 11 12 13 14 15 16
40 Troubleshooting General information on troubleshooting.................................................................................. Classification and procedures of troubleshooting ................................................................ Failure codes table............................................................................................................... Fuse locations...................................................................................................................... Troubleshooting by failure code .............................................................................................. Failure code [D1EMKA] (Disconnection of parking brake interlock relay) ........................... Failure code [D1EMKB] (Ground fault of parking brake interlock relay) .............................. Failure code [D1EMKY] (Hot short of parking brake interlock relay) ................................... Failure code [D1EPKA] (Disconnection of ladder drive pump relay) ................................... Failure code [D1EPKB] (Ground fault of ladder drive pump relay) ...................................... Failure code [D1EPKY] (Short circuit of ladder drive pump relay) ....................................... Failure code [D1EQKY] (Ladder operation alarm relay output hot short circuit).................. Failure code [D1EQKZ] (Ladder operation alarm relay output abnormality: Open circuit, ground fault) ........................................................................................
00-2
40- 17
WA900-3E0
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Table of Contents
Failure code [D1ERKB] (Ladder raise solenoid output ground fault)................................... 40- 18 Failure code [D1ERKZ] (Ladder raise solenoid output abnormality: Open circuit, hot short circuit)................................................................................... 40- 19 Failure code [D1ESKB] (Ladder lower solenoid output ground fault) .................................. 40- 20 Failure code [D1ESKZ] (Ladder lower solenoid output abnormality: Open circuit, hot short circuit)................................................................................... 40- 21 Failure code [DBL0KR] (Power ladder controller CAN-NET signal line open circuit) .......... 40- 22 Failure code [DBL0KT] (Non-volatile memory write error) ................................................... 40- 26 Failure code [DBL1KK] (Power Low Error: Battery direct) ................................................... 40- 27 Failure code [DBL2KK] (Solenoid Power Low Error) ........................................................... 40- 29 Failure code [DDB6KZ] (Parking brake system abnormality) .............................................. 40- 31 Failure code [DDDGKY] (Ladder operation switch hot short circuit).................................... 40- 33 Failure code [DDDKKY] (Ladder raise operation switch hot short circuit) ........................... 40- 35 Failure code [DDDLKY] (Ladder lower operation switch hot short circuit)........................... 40- 38 Failure code [DK5VKX] (Ladder angle sensor abnormality: Out of range) .......................... 40- 41 Failure code [DK5VMA] (Power ladder system abnormality)............................................... 40- 43 Failure code [DUM9KY] (Ladder indicator output hot short circuit) ..................................... 40- 46 Failure code [DUM9KZ] (Ladder indicator output abnormality: Open circuit, hot short circuit)40- 47 Failure code [DV00KY] (Ladder interlock caution output hot short circuit) .......................... 40- 48 Failure code [DV00KZ] (Ladder interlock caution output abnormality: Open circuit, ground fault) ........................................................................................ 40- 49 Failure code [DWNLKA] (Ladder cushion valve output open circuit)................................... 40- 50 Failure code [DWNLKB] (Ladder cushion valve output ground fault) .................................. 40- 51 Failure code [DWNLKY] (Ladder cushion valve output hot short circuit) ............................. 40- 52 Troubleshooting of electrical system (E-mode)....................................................................... 40- 53 E-1 Power ladder does not operate ..................................................................................... 40- 53 E-2 Brake oil temperature warning keeps lighting ............................................................... 40- 56 E-3 Parking brake does not operate (as emergency brake) ................................................ 40- 58 E-4 Parking brake is applied while machine is traveling. ..................................................... 40- 62 E-5 Parking brake is released as starting switch is turned to ON position. ......................... 40- 65 Troubleshooting of hydraulic and mechanical system (H-mode) ............................................ 40- 67 H-1 Power ladder does not move or its speed is low........................................................... 40- 67 H-2 Fan of ADD cooler does not rotate ............................................................................... 40- 68 Troubleshooting of maintenance monitor system (K mode) ................................................... 40- 69 Maintenance monitor system............................................................................................... 40- 69 K-1 Hydraulic oil level gauge flashes................................................................................... 40- 71 Troubleshooting for machine monitor (M-mode)..................................................................... 40- 74 M-1 Rear view monitor does not operate............................................................................. 40- 74 M-2 While clearance lamp is turned on, illuminance of rear view monitor remains dark ..... 40- 77 M-3 Rear view monitor does not work in reverse-interlock mode........................................ 40- 78 M-4 Illuminance of rear view monitor cannot be adjusted ................................................... 40- 80 M-5 Optional controller error and real-time monitor sreen are not displayed on engine service monitor ........................................................................................ 40- 82 M-6 Engine compartment lamp does not light up ................................................................ 40- 84 M-7 Step lamp does not light up .......................................................................................... 40- 87 90 Diagrams and drawings Hydraulic circuit diagram ........................................................................................................ Symbols used in hydraulic circuit diagram........................................................................... Power train hydraulic circuit diagram................................................................................... Brake, power ladder and additional cooler hydraulic circuit diagram................................... Work equipment hydraulic circuit diagram........................................................................... Electrical circuit diagram ......................................................................................................... Symbols used in electric circuit diagram.............................................................................. WA900-3E0
90- 3 90- 3 90- 7 90- 9 90- 11 90- 13 90- 13 00-3
Table of Contents
Electrical circuit diagram ...................................................................................................... 90- 17 Connector arrangement diagram ......................................................................................... 90- 21
00-4
WA900-3E0
Table of Contents
WA900-3E0
00-5
Foreword Before reading this manual
Foreword
Before reading this manual
q q
0 -6
0 -6
This shop manual describes only the different part from the standard machine (WA900-3E0: S/N 60079 and up). For the component that is not described in this manual, refer to the shop manual for the standard machine (WA900-3E0: S/N 60079 and up).
00-6
WA900-3E0
SEN0565404-00
01-
WA900-3E0
WHEEL LOADER WA900-3E0 Shop Manual
Machine model
Serial number
WA900-3E0
60079 and up
01 Specification
WA900-3E0
01-
01-
01-1
Contents
Contents 01 Specification Specification............................................................................................................................ Specification dimension drawing.......................................................................................... Specifications....................................................................................................................... Weight table ......................................................................................................................... Table of fuel, coolant and lubricants ....................................................................................
01-2
01-2 0101010101-
3 3 4 7 9
WA900-3E0
Specification Specification dimension drawing
Specification
01-3
WA900-3E0
01-3
WA900-3E0
01-3
Specification dimension drawing
01-3
Specification Specifications
Performance
Weight
Specifications
01-4
Machine model
WA900-3E0
Serial number
60079 and up
Operating weight
kg
111,200
Load on front axle
kg
62,020
Load on rear axle
kg
49,180
Bucket capacity (heaped)
m3
13.0
Operating load
kg
23,400
Travel speed Forward 1st
km/h
7.0
Travel speed Forward 2nd
km/h
12.3
Travel speed Forward 3rd
km/h
28.0
Travel speed Reverse 1st
km/h
7.1
Travel speed Reverse 2nd
km/h
12.4
Travel speed Reverse 3rd
km/h
28.3
Maximum rim pull
kN {kg}
588.4 {60,000}
Gradeability
degree
25
Center of outside tire
mm
9,200
Outside of chassis (bucket with teeth)
mm
11,000
Overall length (bucket with teeth)
mm
14,058
Overall width (chassis)
mm
4,585
Bucket width (outside of cutting edge)
mm
4,810
Bucket width (with tire guards)
mm
5,045
Overall height (to top of ROPS cab)
mm
5,275
Overall height (with bucket fully raised)
mm
9,680
Wheelbase
mm
5,450
Tread
mm
3,350
Min. ground clearance
mm
295
Maximum bucket hinge pin height
mm
6,960
mm
4,640/5,020
mm
2,450/2,215
degree
47
degree
60
mm
470/645
Dimension
Min. turning radius
Dumping clearance (tooth tip / cutting edge end) Dumping reach (tooth tip / cutting edge end) Bucket tilt-forward angle Bucket tilt-back angle (traveling posture) Digging depth, 10 deg. (tooth tip / cutting edge end)
01-4
WA900-3E0
Specification Specifications
Machine model
WA900-3E0
Serial number
60079 and up Komatsu SAA12V140E-3 4-cycle, water-cooled, V type 12-cylinder, direct injection, with twin turbochargers and aftercooler
Model
Number of cylinders Bore x Stroke
mm
12 140 x 165
Total displacement
l{cc}
30.48 {30, 480}
Rated horsepower
Engine
Type
SAE J1995 (gross) ISO 14396 ISO 9249/SAE J1349 (net)
Maximum torque Rated fuel consumption rate
Power train system
kW{HP}/min-1 {rpm}
Wheel and axle
671 {900}/2,050 {2,050} 638 {856}/2,050 {2,050}
Nm/rpm {kgm/rpm} g/kWh {g/HPh}
4,089 {417}/1,300 200.4 {149.8}
Max. speed with no load
rpm
2,200
Min. speed with no load
rpm
650
Starting motor
24 V, 7.5 kW x 2
Alternator
24 V, 90 A x 2
Battery
12 V, 200 Ah x 2
Torque converter
3-element, 1-stage, 1-phase (TCA51-1A) Planetary gear, 3-forward and 3-reverse speeds (KTM3365)
Transmission Reduction gear unit
Spiral bevel gear type
Differential
Straight bevel gear type
Final reduction gear
Planetary gear, single reduction, oil bath type
Drive method
Front and rear wheel drive
Front axle
Full floating type, fixed to frame
Rear axle
Full floating type, supported by center pin
Tire
45 / 65 45 58 PR (L 5)
Wheel rim Inflation pressure
Brake
671 {900}/2,050 {2,050}
36.00 x 45 WTB kPa {kg/cm2}
667 {6.8}
Foot brake
Wet, multiple disc type brakes acting on front and rear wheels independently
Hand brake
Dry disc type brake acting on drive shaft (front axle), hydraulically released and spring applied
Steering system Type
Frame articulation steering
Structure
Full hydraulic power steering
WA900-3E0 (01)
01-5