Chart B: All Backhoe Services Slow To Operate - jcb 214e Service Manual

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Section D
47 - 3
Fault Finding
Chart B - All Backhoe Services Slow to Operate
START
Is the servo pressure low?
Are the servo pressure isolation
valves operating correctly? Remove
the valve cartridges and check for
signs of contamination or sticking.
Are the joystick controls worn?
Check the condition of the universal
joint mechanism on the joystick
controllers.
Is the load sense relief valve out of
adjustment or defective?
Is the flushing valve piston in
the excavator valve inlet section
blocked open (return to tank)?
Does the engine remain under load
after the spools are returned to neutral?
Remove the flow regulator valve and
check for signs of contamination or
sticking. Check if the valve filter is
clogged.
9803/3280
Precision Control (Servo)
NO
YES
NO
NO
NO
Purchased from www.WorkshopManuals.co.uk
Controls
Adjust as required.
YES
Clean and renew components as
NO
applicable.
Repair or renew as applicable.
YES
Adjust, repair or renew as required.
YES
Clean and renew components as
YES
applicable.
Clean and renew components as
YES
applicable.
Section D
Refer to Service Procedures
- Testing the Servo Pressure.
Refer to Servo Pressure Supply Valve
- Dismantling and Assembly.
Refer to Joystick Controllers -
Dismantling and Assembly.
Refer to Section E, Service
Procedures, Pressure Testing - Load
Sense Relief Valve.
Refer to Section E, Excavator Valve
- Dismantling and Assembly.
Refer to Section E, Excavator Valve
- Dismantling and Assembly.
Refer to Section E, Excavator Valve
- Dismantling and Assembly.
A405670
47 - 3
Issue 1