Dismantling And Assembly - jcb JS300 Service Manual

Dismantling
K Fig 7. ( T
E-232).
1 Remove adapter A and `O'-ring B from valve.
2 Extract spring C, spool D and spring E.
3 Remove adapter F from valve and repeat step 2.
Inspection
Before assembling the cushion valve make sure that a
thorough inspection of all the components is carried out.
Remember that although a failed component may be easy
to identify, the cause may be less easy to trace. It is also
possible that a failed component may have caused
damage to other areas of the valve.
1 Carefully clean all components using a suitable
degreasing agent.
2 Carefully insect all components for signs of excessive
wear or damage. If wear or damage is evident,
components must be renewed.
Assembly
Assembly is a reversal of the dismantling sequence.
K Fig 7. ( T
E-232).
1 Lubricate spool D, springs C and E with clean
hydraulic oil.
Table 2. Hydraulic Connections
Port Hose Colour
A Pink
B Light Green
C Pink
D Light Green
E Red
F Blue
G Red
H Blue
R White/Yellow
E-231

Dismantling and Assembly

9813/5100-1
Section E - Hydraulics
Port Hose Colour
S Green
T Clear
Cushion Valve
Dismantling and Assembly
E-231