Chart C: One Backhoe Service Fails Or Is Slow To Operate - jcb 214e Service Manual

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Section D
47 - 4
Fault Finding
Chart C - One Backhoe Service fails or is Slow to Operate
START
Inspect the associated joystick
controller valve capsule for signs of
wear, damage or contamination.
Is the valve in good working order?
Is the associated auxiliary relief valve
(ARV) out of adjustment or blocked
open (return to tank)?
Is the associated pressure
compensator blocked?
Test the pressure compensator network.
Will the service hold a load normally?
Inspect the associated load hold check
valves and the service spool for signs
of wear, damage or contamination.
Refer also to Section E, Hydraulics
Fault Finding, 'One hydraulic service
fails or is slow to operate'.
9803/3280
Precision Control (Servo)
YES
NO
Refer to Section E, Service Procedures,
Excavator Valve, Pressure Compensator
Network - Testing.
NO
YES
NO
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Controls
Clean and renew components as
applicable.
NO
Adjust, repair or renew as required.
YES
Clean and renew components as
applicable.
YES
Clean and renew components as
NO
applicable.
Section D
Refer to Joystick Controllers -
Dismantling and Assembly.
Refer to Section E, Service
Procedures, Excavator Valve,
Pressure Testing - ARV's.
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.
A405690
47 - 4
Issue 1