Chart B - Machine Does Not Drive In Any Gear - jcb 214e Service Manual

Powershift Gearbox

Chart B - Machine does not drive in any gear.

START
Is gearbox oil level low?
YES
NO
Are the park brake and transmission
NO
dump switches working correctly?
YES
Is the gear selection column switch
NO
working correctly. See Powershift
Electrical System Tests.
NO
YES
Carry out Mainline Oil Pressure Test
Is mainline oil pressure correct?
NO
Check condition of pressure
maintenance
valve. Clean or renew as applicable.
Check for signs of excessive external
oil leakage.
Carry out Mainline Oil Pressure and
Flow Tests
YES
Is mainline oil pressure /flow correct?
NO
Remove and dismantle gearbox.
Check condition of pump, casings for
internal/external leakage. Check
pump drive dogs on torque converter
are undamaged.
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Top up oil level.
Renew switch or repair wiring as
applicable.
Renew switch or repair wiring as
applicable.
Carry out Torque Converter In
Pressure Test
Is torque converter in pressure
correct?
YES
Are the clutch control solenoids
working? Check control valve
solenoids for correct resistance
and wiring continuity - check
forward and reverse solenoids
first.
YES
6 Speed - Is the gearbox ECU connected
correctly?
4 Speed - Are the Powershift relays
connected correctly?
YES
6 Speed - Renew the ECU.
4 Speed - Renew the relays as
applicable.
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Check condition of torque
converter relief valve.
NO
Clean or renew as applicable.
Renew solenoid or repair wiring as
NO
applicable.
Clean connectors and fit securely.
NO
A396290