jcb JS200 Service Manual page 362

Section E
75 - 9
Assembly JS200/JS240 (continued)
9. Inspection after Assembly
No-load Operation
Inspection
Measurement
Inspection
Outer Leakage
Inner Leakage
Inspection
9803/6400
Hydraulic Rams
Operations are smooth and there are no abnormalities with each part after full stroking more
than five times with no load.
Confirm the maximum extension and stroke.
There is no looseness, permanent deformation or outer leakage after applying the test pressure
shown in the diagram for three times to each stroke end.
Check the oil leakage amount at the rod.
inner diameter oil leakage
mm amount
32 0.4
40 0.6
50 1.0
63 1.6
80 2.3
Hydraulics
unit ml/10min
inner diameter
mm
100
125
140
oil leakage inner diameter
amount mm
4.0 160
5.6 180
6.0 200
220
250
Section E
75 - 9
oil leakage
amount
10.0
12.6
15.6
20.0
22.0
Issue 1