Hitachi Ex1900-5 Excavator Technical Troubleshooting Manual (TTLA-0596-EX)
File Details:
Hitachi Ex1900-5 Excavator Technical Troubleshooting Manual (TTLA-0596-EX)
- Manual Language:English
- Pages: 291
- Size: 3.63 MB
- Downloadable:Yes
- Format:PDF
Video Preview:
Image Preview:
Sample Page From The Manual:
Hitachi Ex1900-5 Excavator Technical Troubleshooting Manual (TTLA-0596-EX)
1. The circuit pressure must be increased by applying an external force while blocking the return circuit from the control valve. This measuring method is hazardous and the results obtained with this method are unreliable.
2. The oil flow rate used to set the overload relief pressure is far less than that used to set the main relief pressure. Therefore, measuring the overload pressure in the main circuit by increasing the main relief set-pressure more than the overload valve set-pressure is not a proper method. In addition, in case a main relief valve designed to leak a small quantity of oil before reliving is used, its pre-leaking start pressure must be increased more than the overload relief valve set-pressure. However, the pre-leaking start pressure is not always increased more than the overload relief valve set-pressure as the adjustable upper limit of the main relief valve set-pressure is provided. Accordingly, the overload relief valve assembly should be removed from the machine and checked on a specified test stand at a correct oil flow rate. Some overload relief valves come in contact with the control valve body to block the oil passage. When this type of overload relief valve is checked, the control valve body must be precisely finished as the test unit. Provide one control valve other than that on the machine as a test kit.
3. If the overload relief valve performance must be checked on the machine, however, measure the main relief pressure while releasing each front function respective to the measuring overload relief valve. And, assume that the overload relief valve is functioning correctly if the obtained main relief pressure is within the specified value range.
Table of Contents:
Hitachi Ex1900-5 Excavator Technical Troubleshooting Manual (TTLA-0596-EX)
MATERIALS TOP................................................................................................. 0 PERFORMANCE CHECK & TROUBLESHOOTING........................................................................... 1 SECTION 4 OPERATIONAL PERFORMANCE TEST........................................................................ 2 Group 1 Introduction...................................................................................... 4 Operational Performance Tests......................................................................... 4 Preparation for Performance Tests..................................................................... 5 Group 2 Standard.......................................................................................... 6 Operational Performance Standard...................................................................... 6 Group 3 Engine Test....................................................................................... 12 Engine Speed.......................................................................................... 12 Group 4 Excavator Test.................................................................................... 14 Travel Speed.......................................................................................... 14 Track Revolution Speed................................................................................ 15 Mistrack.............................................................................................. 16 Travel Motor Drift Check.............................................................................. 17 Swing Speed........................................................................................... 18 Swing Function Drift.................................................................................. 19 Swing Motor Leakage................................................................................... 21 Maximum Swingable Slant Angle......................................................................... 22 Swing Bearing Play.................................................................................... 23 Hydraulic Cylinder Cycle Time......................................................................... 25 Cylinder Drift........................................................................................ 27 Control Lever Operating Force......................................................................... 29 Control Lever Stroke.................................................................................. 30 Boom Raise/Swing Combined Operation Check............................................................. 31 Group 5 Component Test.................................................................................... 32 Primary Pilot Pressure Check.......................................................................... 32 Pilot Secondary Pressure.............................................................................. 33 Main Relief Pressure.................................................................................. 35 Overload Relief Pressure.............................................................................. 39 Main Pump Flow Rate Measurement....................................................................... 41 Oil Cooler Fan Motor Draive Pump Flow Rate Measurement................................................ 49 Swing Motor Drainge................................................................................... 57 Travel Motor Drainge.................................................................................. 59 SECTION 5 TROUBLESHOOTING..................................................................................... 62 Group 1 General........................................................................................... 64 Introduction.......................................................................................... 64 Diagnosing Procedure.................................................................................. 65 Group 2 Component Layout.................................................................................. 68 Main Components (Overall Layout)...................................................................... 68 Electrical Components (Overall Layout)................................................................ 69 Electrical Components (Battery Compartment)........................................................... 70 Electrical Components (Engine)........................................................................ 71 Electrical Components (Engine and Components)......................................................... 73 Electrical Components (ECM Equipment Box)............................................................. 74 Electrical Components (Electrical Equipment Box)...................................................... 75 Control Valve......................................................................................... 79 Swing Device.......................................................................................... 81 Travel Device......................................................................................... 82 Pilot Piping.......................................................................................... 83 Pilot Panel (Control Valve Behind Side)............................................................... 84 Pilot Panel (Rear Side)............................................................................... 86 Pump and Components................................................................................... 87 Undercarriage......................................................................................... 88 Group 3 Troubleshooting A.................................................................................126 Troubleshooting A Procedures..........................................................................126 How to Read Fault Codes ON ECM Engine Diagnosis System................................................127 Group 4 Troubleshooting B.................................................................................130 Troubleshooting B Procedure...........................................................................130 Relationship Between Machine Trouble and Potential Problem Parts Which May Cause Trouble if Failed....131 Engine System Troubleshooting.........................................................................137 Actuator System Troubleshooting ......................................................................153 Front Attachment System Troubleshooting...............................................................159 Swing System..........................................................................................165 Travel System Troubleshooting.........................................................................168 Other System Troubleshooting..........................................................................175 Diagnosis by Flashing Indicators......................................................................203 Group 5 Troubleshooting C.................................................................................206 Troubleshooting C Procedure...........................................................................206 Malfunction of Tachometer.............................................................................207 Malfunction of Coolant Temperature Gauge..............................................................209 Malfunction of Hydraulic Oil Temperature Gauge........................................................211 Malfunction of Fuel Gauge.............................................................................213 Malfunction of Alternator Indicator...................................................................215 Malfunction of Pump Transmission Oil Pressure Indicator...............................................217 Malfunction of Engine Oil Pressure Indicator..........................................................219 Malfunction of Overheat Indicator.....................................................................221 Malfunction of Hydraulic Oil Level Indicator..........................................................223 Malfunction of Fuel Level Indicator...................................................................225 Malfunction of Preheat Indicator......................................................................227 Malfunction of Entrance Light Indicator...............................................................229 Malfunction of Fast Travel Mode Indicator.............................................................230 Malfunction of Slow Travel Mode Indicator.............................................................231 Malfunction of Auto-Idle Indictor.....................................................................232 Malfunction of Maintenance Work Light Indicator.......................................................233 Malfunction of Hydraulic Oil Level Indicator..........................................................234 Malfunction of Coolant Level Indicator................................................................235 Malfunction of Engine Oil Level Indicator.............................................................236 Malfunction of Download Indicator.....................................................................237 Malfunction of Coolant Level Indicator................................................................239 Malfunction of Auto-Lubrication Indicator.............................................................241 Malfunction of Engine Stop Indicator..................................................................242 Malfunction of Engine Warning Indicator...............................................................243 Malfunction of Engine Exhaust Gas Temperature Indicator...............................................245 Malfunction of Pump Contamination Indicator...........................................................247 Malfunction of Air Cleaner Restriction Indicator......................................................249 Malfunction of Stop Valve Indicator...................................................................251 Malfunction of Emergency Engine Stop Indicator........................................................253 Malfunction of Ladder Indicator.......................................................................255 Malfunction of Level Check Switch.....................................................................257 Malfunction of Indicator Light Check Switch...........................................................257 Malfunction of Hour Meter.............................................................................258 Malfunction of Buzzer.................................................................................259 Group 6 Electrical System Inspection Procedure............................................................260 Precautions for Inspection and Maintenance............................................................260 Disconnection of Connector............................................................................262 Battery Voltage Check.................................................................................263 Fusible Link Inspection...............................................................................264 Fuse Continuity Check.................................................................................265 Alternator Check......................................................................................270 Voltage Check.........................................................................................271 5 Volt Circuit........................................................................................279 Check Using False Signal..............................................................................280 Continuity Check......................................................................................281 Circuit Check by Lamp Harness.........................................................................282 Electrical Circuit Connection.........................................................................283
Please Note:
⦁ This is the SAME exact manual used by your dealers to fix your vehicle.
⦁ The same can be yours in the next 2-3 mins as you will be directed to the download page immediately after paying for the manual.
⦁ Any queries / doubts regarding your purchase, please feel free to contact [email protected]
Caspian Kase –
The manuals I have purchased are very good. I am very pleased.