Sumitomo SH250-5 SH250-5LR Hydraulic Excavator Service Text Manual - PDF DOWNLOAD

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SH160-5

Contents Contents

Contents Main Body Section Changes from Model 3 Overall Specifications ................................................................................................ 1 1. Specifications Comparison Table ..................................................................... 1 2. Performance Improvements ............................................................................. 4 Hydraulic-related Changes ......................................................................................... 5 1. Use of High-performance Return Filter (nephron filter and breaker filter eliminated)..................................................... 5 2. Use of Add-on Valve......................................................................................... 7 3. Multi Purpose Circuit Switched to One-touch Operation (breaker ⇔ crusher) ......................................................................................... 8 Hydraulic Pump .......................................................................................................... 9 1. Hydraulic Pump Changes................................................................................. 9 2. Appearance Changes....................................................................................... 9

AL

3. Circuit Changes ................................................................................................ 9 4. Reduced Flow Force ...................................................................................... 10

RN

5. Straight Travel Valve ....................................................................................... 11 6. Heat Circuit..................................................................................................... 12

TE

Lower-section Related Changes............................................................................... 14 1. Center Joint Installation Section Notch Dimensions....................................... 14

IN

2. Grease Bath Seal ........................................................................................... 14 3. Center Joint Rotation Stopper Installation Surface......................................... 14

E

4. Lower Roller ................................................................................................... 15

CO US N F E ID O E F N TS TI M AL GL : F O OR BA T L H

5. Upper Roller ................................................................................................... 16 6. Track Guard .................................................................................................... 16

Cab-related Changes ............................................................................................... 17 1. Cab Shape ..................................................................................................... 17 2. Irregularly Shaped Steel Line Structure ......................................................... 17 3. Beefed Up Equipment .................................................................................... 18 4. Interior Equipment .......................................................................................... 19 5. Front Window Lock Mechanism...................................................................... 22

Upper Swing Body Changes .................................................................................... 23 1. High-rigidity Platform ...................................................................................... 23

RST-00-00-031EN 1


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