Service Information Document Title: Hydraulic standard
Function Group: diagram, 990
Information Type: Service Information
Date: 2014/7/15
Profile: EXC, EC480D L [GB]
Hydraulic diagram, standard 1 Main pump
22 Solenoid valve (5 serial)
2 Gear pump (servo and cooling)
23 Remote control valve (lever) - left
3 Main control valve
24 Remote control valve (lever) - right
4 Boom cylinder
25 Remote control valve (pedal)
5 Arm cylinder
26 Shuttle valve block
6 Bucket cylinder
27 Flow control valve
7 Slew motor
28 Check valve (1.5 kgf/cm2)
8 Slew drive unit
29 Check valve (3.0kgf/cm2)
9 Slew gearbox
30 Hydraulic oil cooler
10 Pinion
31 Return oil filter
11 Slew ring gear
32 Bypass valve
13 Track motor
33 Bypass strainer
14 Track gearbox
34 Air breather
15 Center passage
35 Strainer assembly
16 Fan motor
36 Drain oil filter
17 Proportional relief valve
37 Hydraulic oil tank
18 Servo hydraulic oil filter
38 Pressure switch
19 Accumulator block
39 Drain block
20 Accumulator
40 Servo hydraulic block
21 Measuring nipple
98 Orifice connector