Hydraulic Component; Main Pump System - Hitachi EH 5000AC-3 Technical Manual

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Hydraulic Component

Main Pump System

2
1
1, 2
A
12
A
F-
Front
1-
Main Pump 1 (for Hoist)
2-
Main Pump 2 (for Steering)
3-
Gear Pump (for Rear Brake
Cooling Oil)
4-
Hoist Priority Valve
SECTION 1 GENERAL
Group 2 Component Layout
3
TQHA-01-02-003
3
5
TQHA-01-02-004
R-
Rear
5-
Hoist Control Valve
6-
Line Filter
7-
4-Spool Proportional Control
Solenoid Valve
8-
Hoist Cylinder
F
4
10
R
3
B
8
B
9-
Fitter (for Rear Brake Cooling
Oil)
10-
RCB (Relief Check Bleed) Valve
11-
Reducing Valve (for Pilot Oil
Pressure)
T1-2-14
A - A
2
1
5
B - B
12-
From Hydraulic Oil Tank
R
11
TQHA-01-02-005
F
9
6
7
TQHA-01-02-006

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