Hyundai HX85A Crawler Excavator Service Repair Manual - 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 -------------------------------------------------------------------------------------------------- 2-1 Group Group Group Group Group

2 3 4 5 6

Main Control Valve ----------------------------------------------------------------------------------------Swing Device ------------------------------------------------------------------------------------------------Travel Device -------------------------------------------------------------------------------------------------RCV Lever -----------------------------------------------------------------------------------------------------RCV Pedal ------------------------------------------------------------------------------------------------------

2-10 2-31 2-41 2-57 2-64

SECTION 3 HYDRAULIC SYSTEM Group 1 Hydraulic Circuit --------------------------------------------------------------------------------------------- 3-1 Group Group Group Group

2 3 4 5

Main Circuit ----------------------------------------------------------------------------------------------------Pilot Circuit -----------------------------------------------------------------------------------------------------Single Operation ------------ -------------------------------------------------------------------------------Combined Operation -------------------------------------------------------------------------------------

3-4 3-7 3-12 3-24

SECTION 4 ELECTRICAL SYSTEM Group 1 Component Location ------------------------------------------------------------------------------------- 4-1 Group 2 Monitoring system ------------------------------------------------------------------------------------------ 4-3 Group Group Group Group

3 4 5 6

Electrical Circuit ---------------------------------------------------------------------------------------------Electrical Component Specification ------------------------------------------------------------Connectors --------------------- -------------------------------------------------------------------------------Fault codes --------------------- --------------------------------------------------------------------------------

4-42 4-59 4-66 4-83

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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