Removal And Replacement - jcb JS300 Service Manual

!M
WARNING
Hydraulic Pressure
Hydraulic fluid at system pressure can injure you.
Before connecting or removing any hydraulic hose,
residual hydraulic pressure trapped in the service
hose line must be vented. Make sure the hose service
line has been vented before connecting or removing
hoses. Make sure the engine cannot be started while
the hoses are open.
INT-3-1-11_2
!M
WARNING
Fluid Under Pressure
Fine jets of fluid at high pressure can penetrate the
skin. Keep face and hands well clear of fluid under
pressure and wear protective glasses and gloves.
Hold a piece of cardboard close to suspected leaks
and then inspect the cardboard for signs of fluid. If
fluid penetrates your
immediately.
INT-3-1-10_3
Removal
1 Lower dipper and place bucket on the ground
2 Turn off engine.
3 Operate both control joysticks back and forth and side
to side to vent residual pressure.
4 Remove the two screws A from each side, and loosen
screws B (one either side of the arm rest). Remove
front panel C.
5 Disconnect electrical connection to remote control
valve.
6 Disconnect all hydraulic hoses and pipes from the
remote control valve and plug all orifices to prevent
ingress of dirt. Label each hose before disconnecting,
this will ensure correct position when refitting.
7 Remove the two screws D, two screws E and loosen
the two screws F. Remove panel G.
8 Lift up gaiter H and remove the fours bolts holding the
valve to the arm rest.
E-100

Removal and Replacement

skin, get medical help
9 Lift the remote control valve clear of the arm rest.
Note: Care should be taken when removing right arm rest,
remove switches, using a thin flat bladed screw driver and
disconnect electrical connections.
Replacement
Replacement is the reversal of the removal sequence.
Note: All hydraulic adapters that are installed together with
a bonded sealing washer must also have JCB Threadseal
applied to the threads of the adapter.
9813/5100-1
Section E - Hydraulics
Hydraulic Control Levers
Removal and Replacement
E-100