jcb JS 200 Series, Service Manual

Page: 246 / 531

14 - 7
Main body wear limit
Section E
Hydraulics
9803/6400
Section E
14 - 7
Issue 2*
Hydraulic Pump JS200, JS240
If the wear of the parts exceeds the standards below, replace or readjust. However, if they are extremely damaged judging from
the external appearance, replace with the appropriate part.
Standard Dimensions/Recommended Replacement Value
Pump Model
KRJ3785, KBJ2316
Clearance between 0.028 0.039 0.043 0.0375 Replace piston or
piston and cylinder cylinder
bore (D-d)
0 0 0 0.078
Backlash of piston 0~0.1 0~0.1 0~0.1 0~0.1 Replace piston
and shoe caulking shoe assembly
part(
δ
)
0.3 0.3 0.3 0.35
Shoe thickness(t) 3.9 4.9 5.4 5.4 Replace piston
shoe assembly
3.7 4.7 5.0 5.0
Cylinder spring free 31.3 41.1 47.9 40.9 Replace cylinder
height (L) spring
30.2 40.3 47.1 40.1
Assembled height of 10.5 9.8 13.5 13.5 Replace press
press plate and plate or spherical
spherical bush bush
9.8 8.8 12.5 12.5
Part Name and
Inspection Item
Treatment
*