Excavator Valve - Removal And Replacement; Manual Control Removal And Replacement - jcb 214e Service Manual

www.WorkshopManuals.co.uk
Section E
60 - 1
Removal and Replacement
Manual Control
! WARNING
Make the machine safe before working underneath it.
Park the machine on level ground, lower the arms. Apply
the parking brake, put the transmission in neutral and
stop the engine. Chock both sides of all four wheels.
Disconnect the battery, to prevent the engine being
started while you are beneath the machine.
GEN-1-2
!
DANGER
Hydraulic fluid at system pressure can injure you. Before
disconnecting or connecting hydraulic hoses, stop the
engine and operate the controls to release pressure
trapped in the hoses. Make sure the engine cannot be
started while the hoses are open.
INT-3-1-11/1
Removal
1 Operate the valve block levers back and forth to vent
residual pressure.
2 Remove the rear valance.
3 Remove clevis pins A to disconnect the control levers
from the valve block spools.
4 Disconnect all hydraulic hoses from the valve block and
plug all orifices to prevent ingress of dirt. Label each
hose before disconnecting, this will ensure correct
position when refitting.
5 Loosen nuts B - do not completely remove the retaining
nuts.
A
9803/3280
Hydraulics
Excavator Valve
Purchased from www.WorkshopManuals.co.uk
! CAUTION
This component is heavy. Do not attempt to remove it
unless its weight is held by a sling. Make sure that the
sling is attached to a suitable lifting appliance.
HYD 2-3/1
Wrap a suitable sling around the valve, make sure that
6
the weight of the valve is supported by the sling.
7 Remove nuts B and lower the valve block to the
ground.
Replacement
Replacement is a reversal of the removal sequence.
Hoses and pipes (when applicable) must be re-connected
and p hased in sam e p o sit io n as rem o val. Ref er t o
Dismantling and Assembly, Hoses and Pipes.
! WARNING
Fine je t s of hydra ulic fluid a t high pre ssure c a n
penetrate the skin. Do not use your fingers to check for
hydraulic fluid leaks. Do not put your face close to
suspected leaks. Hold a piece of cardboard close to
suspected leaks and then inspect the cardboard for
signs of hydraulic fluid. If hydraulic fluid penetrates your
skin, get medical help immediately.
INT-3-1-10/1
After replacement check the auxiliary relief valve (A.R.V.)
pressure settings.
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.
B
Section E
60 - 1
S401480
Issue 1