Powershift Gearbox Fault Finding - jcb 214e Service Manual

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Section F
40 - 1
Powershift Gearbox
Introduction
The fault finding procedures are given in the form of flow
charts. There are a number of charts, each one dedicated to
a particular fault. The charts are designed to identify
possible causes by performing checks and where
applicable, specific tests on the gearbox. Having identified a
cause the suggested remedy is given. The charts are
designed to identify causes through a process of elimination,
starting with the simplest, most easily rectified faults.
Gearbox faults may be caused by faulty electrical
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connectors or components as indicated in the fault finding
charts. Full explanations of the relevant electrical systems
for both 4 speed and 6 speed (Shiftmaster) gearboxes are
given in Electrical Connections.
Due to the time and effort involved in removing, dismantling,
assembling and replacing a gearbox, it is recommended that
fault finding procedures are carried out until a fault can be
identified with a good degree of certainty.
Full details of the test procedures referred to in the charts
are given in Service Procedures, Powershift Gearbox.
Fault Finding Charts:
Chart A - Machine drives but lacks power in all gears.
Gearbox oil may also be overheating.
Chart B - Machine does not drive in any gear.
Chart C - Some gears fail to engage or lack power. 4WD
fails to engage.
Chart D - (6 speed gearbox only) Shiftmaster fails to
function normally - fails to autoshift - shifts at
incorrect road speed.
Note: 4th, 5th and 6th gears utilise clutches used for 1st,
2nd and 3rd gears. If 4th, 5th or 6th gears fail to engage,
check that the lower 3 gears function correctly before
investigating a possible Shiftmaster fault. See Fault Finding
Chart C.
Chart E - Gearbox oil overheats
Chart F - External oil leakage
Chart G- Noisy operation
Further Fault Finding Information
Gearbox Oil Contaminated with Water
9803/3280
Transmission
Fault Finding
Purchased from www.WorkshopManuals.co.uk
Section F
40 - 1
Issue 2*