3 - 15
Section E Hydraulics
9803/7130
Section E
3 - 15
Issue 1
Basic System Operation
Hydraulic System Schematic
2CX, 210S
Component Key
1 Tank
1A Tank cap
1B Filter with bypass
1C Suction strainer
2 Main pump
2A Auxiliary pump (if fitted)
3 Loader valve block (2 or 3 spool)
3A Loader shovel spool
3B Loader lift spool with float
3C Auxiliary /Quick Hitch spool
3D Main relief valve
3E Shovel ram head side A.R.V.
3F Shovel ram rod side A.R.V.
3G Auxiliary /Quick Hitch ram head side A.R.V.
3H Auxiliary /Quick Hitch ram rod side A.R.V.
3J Load hold check valves
4 Excavator valve block
4A Slew spool
4B Boom spool
4C Stabiliser spool
4D Stabiliser spool
4E Dipper spool
4F Bucket spool
4G Auxiliary/Extending dipper spool
4H Hydraclamp valve
4J Slew left A.R.V.
4K Slew right A.R.V.
4L Boom ram rod side A.R.V.
4M Boom ram head side A.R.V.
4N Dipper ram head side A.R.V.
4P Dipper ram rod side A.R.V.
4R Bucket ram rod side A.R.V.
4S Bucket ram head side A.R.V.
4T Auxiliary/Extending dipper head side A.R.V.
4U Auxiliary/Extending dipper rod side A.R.V.
4W Load hold check valves
5 Priority valve
6 Filter gauze
7 Cooler
7A Check valve (5 bar)
8 Pressure test connectors
9 Steer unit
9A Steer relief valve
9B Steer shock valves
10 Steer setting valve
11 Rear steer ram
12 Front steer ram
13 Smooth ride selector valve
14 Accumulator
15 Check valve
16 Auxiliary attachment quick release couplings
17 Loader hydraulic quickhitch
18 Loader quickhitch locking valve
19 Shovel ram R.H.
20 Shovel ram L.H.
21 Lift ram R.H.
22 Lift ram L.H.
23 Hydraclamps
24 Stabiliser rams
25 Slew rams
26 Boom ram
27 Dipper ram
28 Bucket ram
29 Bi-restrictor
30 Auxiliary/Extending dipper ram
31 Rockbreaker quick release couplings
32 Rockbreaker
Note: Excavator services shown here are to the JCB 'X'
control pattern. For ISO '+' control pattern, components 4B,
4L and 4M swap positions with items 4E, 4N and 4P
respectively.
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