63 - 2
Dismantling and Assembly
Hydraclamp Valve
The numerical sequence shown on the illustration is
intended as a guide to dismantling.
For assembly the sequence should be reversed.
Great care should be taken when dismantling and
assembling a valve to avoid the following:-
Contamination
Damage to spools
Damage to seal grooves
Any of the above may result in possible problems with the
operation of the valve.
Dismantling
When removing 'O' Rings and seals, use an appropriatly
rounded tool that WILL NOT cause any damage to the seal
grooves.
Discard ALL 'O' Rings. DO NOT use worn or damaged
items.
Plug hose 1 to prevent loss of oil and entry of dirt.
Inspection
Visually inspect the valve components for scratches, nicks
or any other type of damage, replace with new if required.
Assembly
Note: View 'A' shows the clamp in the OFF position.
Ensure that orifice X is clear.
Lubricate new seals with JCB Hydraulic Fluid.
Ensure that plug 7 locates in groove Y of rotary spool 9.
Torque nut 5 finger-tight before locking lever 4.
Ensure that spool 9 rotates freely after tightening nuts 5 and
3.
Torque Settings
Item Nm kgf m lbf ft
3 55 - 67 5.6 - 6.84 40.5 - 49.5
7 3.3 - 4.7 0.35 - 0.49 2.5 - 3.5
14 21.3 - 26.7 2.22 - 2.78 16 - 20
Section E Hydraulics
9803/7130
Section E
63 - 2
Issue 1
Excavator Valve
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