Chart E - Gearbox Oil Overheats - jcb 214e Service Manual

Powershift Gearbox

Chart E - Gearbox oil overheats

START
Is the gearbox oil cooler heat
exchanger matrix clogged with
YES
dirt/chaff?
Is gearbox oil level incorrect (too low
YES
or too high)?
NO
Is gearbox oil the correct type and
free from contamination, especially
YES
water contamination?
NO
Are the cooler lines kinked, or
trapped?
YES
NO
Is the machine being operated
NO
correctly - in the correct gear range?
YES
Carry out Torque Converter Out
NO
Pressure/Flow Test. Is the pressure
correct?
YES
Is oil flow correct?
NO
YES
Remove gearbox. Check condition of
pump, casings for internal/external
leakage. Inspect clutches for signs of
jammed pistons. Repair clutches as
applicable.
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Clean the matrix.
Adjust oil to correct level.
Check reason for contamination.
Rectify as applicable. Drain and flush
oil, see Flushing the Gearbox Oil.
Rectify routing/renew hoses as
applicable
Educate operator.
Check condition of torque
converter relief valve.
Clean or renew as applicable.
YES
Is the cooling circuit restricted or
YES
blocked internally? Remove cooler,
check lines and cooler for internal
blockages.
NO
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Rectify as applicable.
A396320