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Komatsu WA430-6E0 Shop Manual
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Komatsu WA430-6E0 Shop Manual

Komatsu WA430-6E0 Shop Manual

Wheel loader
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WHEEL LOADER
© 2012 Komatsu Hanomag GmbH
All Rights Reserved
Printed in Europe 2012-09
WA430
SERIAL NUMBERS
-6E0
H60266
and up
VEBM948102

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Summary of Contents for Komatsu WA430-6E0

  • Page 1 VEBM948102 WHEEL LOADER WA430 -6E0 H60266 SERIAL NUMBERS and up © 2012 Komatsu Hanomag GmbH All Rights Reserved Printed in Europe 2012-09...
  • Page 2 Find manuals at https://best-manuals.com...
  • Page 3 SEN00832-13 WHEEL LOADER 1SHOP MANUAL WA430-6E0 Machine model Serial number WA430-6E0 H60266 and up 00 Index and foreword Index Composition of shop manual .......................... 2 Table of contents ............................. 4 WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 4 40 Troubleshooting SEN00829-05 Failure code table and fuse locations SEN01736-05 General information on troubleshooting SEN01737-03 Troubleshooting by failure code (Display of code), Part 1 SEN01738-04 Troubleshooting by failure code (Display of code), Part 2 SEN01739-04 WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 5 Undercarriage and frame SEN02197-02 Hydraulic system SEN02198-02 Work equipment SEN02199-03 Cab and its attachments SEN02200-02 Electrical system SEN02201-01 90 Diagrams and drawings SEN00831-04 Hydraulic diagrams and drawings SEN00835-02 Electrical diagrams and drawings SEN00836-03 Connector list SEN00836-03 WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 6 Steering piping diagram ......................Steering column ........................Steering pump.......................... Steering valve .......................... 17 Orbit-roll valve.......................... 32 Stop valve ..........................36 Steering relief valve ......................... 37 Steering cylinder ........................38 Emergency steering motor....................... 40 Emergency steering pump ....................... 41 WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 7 Kickdown switch and hold switch .................... Multi-function knob ........................Joystick steering knob ......................KOMTRAX system ........................10 Engine starting circuit ......................12 Engine stopping circuit ......................14 Preheating circuit........................15 Engine power mode selector circuit..................16 WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 8 Bleeding air from hydraulic drive fan circuit ................Testing brake pedal........................Testing and adjusting brake pedal linkage................Testing brake performance ...................... Testing and adjusting accumulator charge pressure ............... 10 Testing wheel brake oil pressure ..................... WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 9 Failure code [2G43ZG] (Accumulator: Low oil pressure)............30 Failure code [44K0L4] (Bucket positioner: ON/OFF signals disagree) ........32 Troubleshooting by failure code (Display of code), Part 2 SEN01739-04 Failure code [AA1ANX] (Air cleaner: Clogging) ............... WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 10 Failure code [CA559] (Supply pump pressure very low error) ..........50 Failure code [CA689] (Engine Ne speed sensor error)............52 Failure code [CA731] (Engine Bkup speed sensor phase error) ..........54 Failure code [CA757] (All continuous data lost error) .............. 55 WA430-6E0 Find manuals at https://best-manuals.com...
  • Page 11 Failure code [DB90KT] Work equipment controller: Abnormality in controller......22 Failure code [DB92KK] Work equipment controller load power supply line: Low source voltage (input) ................. 24 Failure code [DB95KX] Work equipment controller power supply output: Out of input signal range ..................26 WA430-6E0...
  • Page 12 Failure code [DGT1KX] (Torque converter oil temperature sensor: Out of input signal range)................... 52 Troubleshooting by failure code (Display of code), Part 7 SEN01744-02 Failure code [DH21KA] (Loader pump pressure sensor: Disconnection) ........ Failure code [DH21KB] (Loader pump pressure sensor: Power supply line short) ....WA430-6E0...
  • Page 13 Failure code [DW4SKY] (Bucket dump EPC solenoid: Short circuit with power supply line)..............Failure code [DW7BKA] (Fan reverse solenoid: Disconnection) ..........Failure code [DW7BKB] (Fan reverse solenoid: Short circuit)..........Failure code [DW7BKY] (Fan reverse solenoid: Short circuit with power supply line) .... 10 WA430-6E0...
  • Page 14 Short circuit with power supply line)..............44 Failure code [DY30MA] Motor-driven emergency steering pump failure (During operation of machine)................46 Failure code [DY30MC] Motor-driven emergency steering pump failure (Malfunction in manual mode)................49 Failure code [DY30ME] Emergency steering: Operating for more than 1 minute....52 WA430-6E0...
  • Page 15 H-5 Shocks are large at the times of starting and shifting gear ..........16 H-6 Time lag is large at the times of starting and shifting gear..........18 H-7 The torque converter oil temperature is high ..............20 H-8 Steering does not turn....................... 21 WA430-6E0...
  • Page 16 How to read this manual ......................Coating materials list ....................... Special tools list ........................Sketches of special tools ......................10 Engine and cooling system SEN02192-03 Removal and installation of fuel supply pump assembly ............Removal and installation of fuel injector assembly ..............WA430-6E0...
  • Page 17 90 Diagrams and drawings Hydraulic diagrams and drawings SEN00835-02 Power train hydraulic circuit diagram..................Automatic greasing circuit diagram ..................Hydraulic circuit diagram ......................Electrical diagrams and drawings SEN00836-03 Electrical diagrams and drawings.................... Work equipment controller system electrical circuit diagram........... 31 Connector list........................... WA430-6E0...
  • Page 18 SEN00832-13 00 Index and foreword WA430-6E0...
  • Page 19 SEN00832-13...
  • Page 20 SEN00832-13 00 Index and foreword WA430-6E0...
  • Page 21 SEN00833-04 WHEEL LOADER 1SHOP MANUAL WA430-6E0 Machine model Serial number WA430-6E0 H60266 and up 00 Index and foreword Foreword and general information Safety notice ..............................2 How to read the shop manual ......................... 7 Explanation of terms for maintenance standard ..................... 9 Handling of electric equipment and hydraulic component ................11...

  • Page 22: Safety Notice

    Proper service and repair are 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 23 Operate the hoist or crane slowly to prevent the component from hitting any other part. Do not work with any part still raised by the hoist or crane. WA430-6E0...
  • Page 24 If you grasp them, your fingers as large as 39.2 kN {4,000 kg}. may be caught. After the wire ropes are stretched, stop the crane and check the condi- tion of the slung load, wire ropes, and pads. WA430-6E0...
  • Page 25 11) After operating the hoist, do not swing the control switch. 12) Remember the position of the main switch so that you can turn off the power immedi- ately in an emergency. WA430-6E0...
  • Page 26 ( R1 34 a ) ( DEN SO: ND -OIL8 , VA L E O T H E R M A L S Y S T E M S : ZXL100PG (equivalent to PAG46)) to its O-rings. WA430-6E0...
  • Page 27 Engine volume This section explains the method of reproducing, repairing, and replacing parts. Revision and distribution Any additions, revisions, or other change of notices will be sent to KOMATSU distributors. Get the most up-to-date information before you start any work. WA430-6E0...
  • Page 28 Places where oil, etc. must be drained, and quantity to be drained. Units In this shop manual, the units are indicated with International System of units (SI). For reference, con- ventionally used Gravitational System of units is indicated in parentheses { }. WA430-6E0...
  • Page 29 The tightness of fit is decided by the toler- ance. Indication of size of rotating shaft and hole and relationship drawing of them Example: Tolerance Standard size Shaft Hole –0.030 +0.046 –0.076 WA430-6E0...
  • Page 30 If a product is worn to the allowable value, it must be checked or repaired. Since the permissible value is estimated from vari- ous tests or experiences in most cases, however, it must be judged after consider- ing the operating condition and customer's requirement. WA430-6E0...
  • Page 31 The pins of the male and female connec- tors are in contact at the crimped terminal or soldered portion, but if there is exces- sive force brought to bear on the wiring, the plating at the joint will peel and cause improper connection or breakage. WA430-6E0...
  • Page 32 If there is oil or water in the com- pressed air, the contacts will become even dirtier, so remove the oil and water from the compressed air com- pletely before cleaning with com- pressed air. WA430-6E0...
  • Page 33 If the machine is left disassem- bled for a long time, it is particu- larly easy for improper contact to occur, so always cover the con- nector. WA430-6E0...
  • Page 34 If the connector cannot be cor- rected easily, remove the clamp and adjust the position. If the connector clamp has been removed, be sure to return it to its original position. Check also that there are no loose clamps. WA430-6E0...
  • Page 35 (2) while moving it up and down until the locks are set normally. Arrow: 1), 2), 3) Right of figure: Lock (a) is pulled down (not set completely) and lock (b) is set completely. (1): Male connector (2): Female connector (a), (b): Locks WA430-6E0...
  • Page 36 After completely drying the con- n e c t o r, b l o w i t w i t h c o n t a c t restorer and reassemble. WA430-6E0...
  • Page 37 If there is any change, there is proba- bly defective contact in that circuit. WA430-6E0...
  • Page 38 If an oil clean- ing device is used, it is possible to filter out the dirt that has collected during storage, so this is an even more effective method. WA430-6E0...
  • Page 39 The oil cleaning equipment is used to remove the ultra fine (about 3 ) particles that the filter built in the hydraulic equipment can- not remove, so it is an extremely effective device. WA430-6E0...
  • Page 40 Even if lock (L2) is pressed, connec- tor (1) cannot be pulled out toward you, if part A does not float. In this case, float part A with a small screw- driver while press lock (L2), and then pull out connector (1) toward you. WA430-6E0...
  • Page 41 If the lock is on the underside, use flat-head screwdriver [1] since you cannot insert your fingers. While pressing up lock (C) of the connec- tor with flat-head screwdriver [1], pull out connector (3) in the direction of the arrow. WA430-6E0...
  • Page 42 Insert the connector to the end, while setting its groove. Turn housing (H1) in the direction of the arrow until it “clicks”. Example) Speed sensor of fuel supply pump:  G (SUMITOMO-3) Pull the connector straight up. WA430-6E0...
  • Page 43 (Nominal No. 3 and below) Insulator Soft polyvinyl chloride automobile Conduc- Annealed copper for elec- Heat-resis- General wiring in extremely tric appliance tant low-volt- –50 to +110 cold district, wiring at high-tem- age wire for Heat-resistant crosslinked perature place Insulator automobile polyethylene WA430-6E0...
  • Page 44 (mm d (approx.) 10.4 12.0 13.6 Standard – – – – – – – – – Cov- Standard 10.8 11.4 13.0 13.6 16.0 17.6 er D Standard 10.8 11.4 13.0 13.6 16.0 17.6 “f” of nominal No. denotes flexible”. WA430-6E0...
  • Page 45 – – – Others – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – WA430-6E0...
  • Page 46 07378-10400 07371-30400 07379-00500 07378-10500 07371-30500 If the part is not under hydraulic pressure, the following corks can be used. Dimensions Nominal Part Number number 07049-00608 07049-00811 07049-01012 07049-01215 07049-01418 11.5 07049-01620 13.5 07049-01822 07049-02025 07049-02228 18.5 07049-02430 07049-02734 22.5 WA430-6E0...
  • Page 47 If any part is loosened or damaged, retighten or repair it. Fuel system Check the piping for damage, the mounting bolts and nuts for looseness, and the joints for fuel leakage. If any part is loosened or damaged, retighten or repair it. WA430-6E0...
  • Page 48 If any bolt or nut is loosened, retighten it. Checking muffler function Check the muffler for abnormal sound and sound different from that of a new muffler. If any abnormal sound is heard, repair the muffler, referring to “Troubleshooting” and “Disassembly and assembly”. WA430-6E0...
  • Page 49 After inserting the hose in the mating adapter perfectly, pull it back to check its connecting condition. (Fig. 5) When the hose is pulled back, the rubber cap portion moves toward the hose about 3.5 mm. This does not indicate abnormality, however. WA430-6E0...
  • Page 50 2), pull out whole body (7) to discon- nect it. (Fig. 8) Connection Hold the tightening portion and push body (7) straight until sliding prevention ring (6) contacts contact surface (a) of the hexag- onal portion at the male end. (Fig. 9) WA430-6E0...
  • 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:

H60266