jcb 3CX Service Manual

40 - 6 Section F Transmission 9803/3280
Section F
40 - 6
Issue 1
Fault Finding
YES
YES
YES
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Is gearbox oil level incorrect (too low
or too high)?
START
Is gearbox oil the correct type and
free from contamination, especially
water contamination?
Are the cooler lines kinked, or
trapped?
Is the machine being operated
correctly - in the correct gear range?
Is the gearbox oil cooler heat
exchanger matrix clogged with
dirt/chaff?
Clean the matrix.
Adjust oil to correct level.
Rectify routing/renew hoses as
applicable
Educate operator.
Check reason for contamination.
Rectify as applicable. Drain and flush
oil, see Flushing the Gearbox Oil.
Remove gearbox. Check condition of
pump, casings for internal/external
leakage. Inspect clutches for signs of
jammed pistons. Repair clutches as
applicable.
NO
NO
NO
Check condition of torque
converter relief valve.
Clean or renew as applicable.
Is oil flow correct?
Carry out Torque Converter Out
Pressure/Flow Test. Is the pressure
correct?
Rectify as applicable.
Is the cooling circuit restricted or
blocked internally? Remove cooler,
check lines and cooler for internal
blockages.
A396320
Powershift Gearbox
Chart E - Gearbox oil overheats
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jcb 3CX Specifications

General

Brand	jcb
Model	3CX
Category	Compact Loader
Language	English