Linkbelt Sumitomo 250X4 A3 Assembly Diagrams SERVICE MANUAL – PDF DOWNLOAD

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Linkbelt Sumitomo 250X4 A3 Assembly Diagrams SERVICE MANUAL – PDF DOWNLOAD

FILE DETAILS:

Linkbelt Sumitomo 250X4 A3 Assembly Diagrams SERVICE MANUAL – PDF DOWNLOAD

Language : English
Pages :106
Downloadable : Yes
File Type : PDF

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TABLE OF CONTENTS:

Linkbelt Sumitomo 250X4 A3 Assembly Diagrams SERVICE MANUAL – PDF DOWNLOAD

A3 Assembly Diagrams 1
J 3
Explanation of Hydraulic Circuit and Operations (standard model) 5
Travel Circuit 6
Travel Low-speed Circuit 6
Travel High-speed Circuit 8
Straight Travel Circuit (with HBCV) 10
Swing Circuit 12
Swing Speed Limit Control Circuit 12
Swing Relief Cut Control Circuit 14
Swing Brake Circuit 16
Swing Parking Circuit (lever in neutral) 18
Swing Parking Circuit (brake release) 20
Swing Parking Circuit (machine stop) 22
Boom Circuit 24
Boom-up Circuit (independent operation) (with HBCV) 24
Boom-up Spool Stroke Control Circuit (compound boom-up + arm-in) (with HBCV) 26
Boom-down Regenerative Circuit (with HBCV) 28
Boom-down Tilting Prevention Circuit (with HBCV) 30
Boom-down Load Holding Valve Circuit (with HBCV) 32
Arm Circuit 34
Arm-out Circuit (with HBCV) 34
Arm Semi-Parallel 1 Circuit 36
Arm Semi-Parallel 2 Circuit 38
Arm-in Regenerative Circuit (with HBCV) 40
Arm-in Load Holding Valve Circuit (with HBCV) 42
Bucket Circuit 44
Bucket-open Circuit 44
Bucket-close Regenerative Circuit 46
Bucket-Close Spool Stroke Control Circuit 48
Negative Control Circuit 50
Negative Control Circuit 50
Other Circuits 52
Cushion Circuit (arm-out operation) 52
Cushion Circuit (when arm-out operation stopped) 54
Cushion Circuit (arm-out → arm-in operation) 56
Heat Circuit (lever in neutral) 58
Auto Pressure Boost Circuit (arm in) 60
J 63
Explanation of Hydraulic Circuit and Operations (option) 65
Option Circuits 66
Breaker Circuit (independent operation) 66
Double-acting Circuit (hydraulic fork) 68
Multi-purpose Circuit (breaker Q control) 70
Multi-purpose Circuit (2 pumps flow crusher) 72
2nd Option Circuit (hydraulic rotation fork) 74
R 77
Electrical Connector Wiring Diagram 79
Main Frame 80
Control Valve 82
SCR 84
Cab Main Harness 86
Console 88
EST-A 90
Indicator Jumper 92
R 93
Electrical Parts and Wiring Assembly Diagram 95
Frame 96
Engine and Pump 98
Attachments100
Battery102
Cab104

S.M 2/1/25