Hyundai R220lc 9 Crawler Excavator Service Repair Manual

Page 1

CONTENTS SECTION 1 GENERAL Group 1 Safety Hints ------------------------------------------------------------------------------------------------------- 1-1 Group 2 Specifications ---------------------------------------------------------------------------------------------------- 1-10

SECTION 2 STRUCTURE AND FUNCTION Group Group Group Group Group Group

1 2 3 4 5 6

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

2-1 2-20 2-54 2-76 2-98 2-105

SECTION 3 HYDRAULIC SYSTEM Group Group Group Group Group

1 2 3 4 5

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

3-1 3-2 3-5 3-14 3-24

SECTION 4 ELECTRICAL SYSTEM Group Group Group Group

1 2 3 4

Component Location ---------------------------------------------------------------------------------------Electric Circuit --------------------------------------------------------------------------------------------------Electrical Component Specification ---------------------------------------------------------------Connectors -------------------------------------------------------------------------------------------------------

4-1 4-3 4-21 4-29

SECTION 5 MECHATRONICS SYSTEM Group Group Group Group

1 2 3 4

Outline --------------------------------------------------------------------------------------------------------------Mode selection System ----------------------------------------------------------------------------------Automatic Deceleration System --------------------------------------------------------------------Power Boost System ---------------------------------------------------------------------------------------

Group Group Group Group

5 6 7 8

Travel Speed Control System ------------------------------------------------------------------------Automatic Warming Up Function -------------------------------------------------------------------Engine Overheat Prevention Function ----------------------------------------------------------Variable Power Control System ----------------------------------------------------------------------

5-1 5-3 5-6 5-7 5-8 5-9 5-10 5-11


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