Hyundai R25Z-9A Compact Excavator Repair Manual 2023 - PDF DOWNLOAD

Page 1

CONTENTS SECTION 1 GENERAL Group 1 Safety Hints ---------------------------------------------------------------------------------------------------- 1-1 Group 2 Specifications ------------------------------------------------------------------------------------------------- 1-9

SECTION 2 STRUCTURE AND FUNCTION Group 1 Pump Device -------------------------------------------------------------------------------------------------Group 2 Main Control Valve ----------------------------------------------------------------------------------------Group 3 Swing Device ------------------------------------------------------------------------------------------------Group 4 Travel Device -------------------------------------------------------------------------------------------------Group 5 RCV Lever ----------------------------------------------------------------------------------------------------Group 6 RCV Pedal -----------------------------------------------------------------------------------------------------

2-1 2-6 2-35 2-44 2-55 2-67

SECTION 3 HYDRAULIC SYSTEM Group 1 Hydraulic Circuit --------------------------------------------------------------------------------------------Group 2 Main Circuit ---------------------------------------------------------------------------------------------------Group 3 Pilot Circuit ----------------------------------------------------------------------------------------------------Group 4 Single Operation -------------------------------------------------------------------------------------------Group 5 Combined Operation -------------------------------------------------------------------------------------

3-1 3-2 3-5 3-10 3-22

SECTION 4 ELECTRICAL SYSTEM Group 1 Component Location ------------------------------------------------------------------------------------Group 2 Monitoring system ----------------------------------------------------------------------------------------Group 3 Electrical Circuit --------------------------------------------------------------------------------------------Group 4 Electrical Component Specification ------------------------------------------------------------Group 5 Connectors -----------------------------------------------------------------------------------------------------

4-1 4-3 4-8 4-24 4-30

SECTION 5 TROUBLESHOOTING Group 1 Before Troubleshooting --------------------------------------------------------------------------------- 5-1 Group 2 Hydraulic and Mechanical System -------------------------------------------------------------- 5-4 Group 3 Electrical System ------------------------------------------------------------------------------------------- 5-24


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