Jaguar XJ (X350). Service manual — part 1064
Description and operation
Transmission Cooling
All except vehicles with diesel engine
Item
Part Number
Description
1
—
Fluid cooler
2
—
Transmission
3
—
Fluid cooler tubes
Fluid Cooler
The fluid cooler is of an aluminium construction consisting of a tube and louvered fin core-type, the
tubes are arranged horizontally for the crossflow of the fluid.
It is divided into two sections to provide cooling for both the transmission and the engine, each
section is separate within the same unit.
When carrying out any transmission procedures the drained fluid should be checked thoroughly for
any metal filings or particles, in the event of this the transmission fault should be located followed by
a thorough flushing of the fluid cooler and fluid cooler tubes.
Vehicles with diesel engine
Item
Part Number
Description
1
—
Fluid cooler inlet hose
2
—
Fluid cooler outlet hose
3
—
Transmission
4
Fluid cooler tubes
5
Fluid cooler tube retaining bracket
6
Fluid cooler tube retaining bracket
7
Fluid cooler retaining bracket
8
Fluid cooler
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Fluid Cooler
The fluid cooler is mounted to the left-hand side of the front subframe via a retaining bracket. The
fluid cooler is cooled by the engine coolant system.
When carrying out any transmission procedures the drained fluid should be checked thoroughly for
any metal filings or particles, in the event of this the transmission fault should be located followed by
a thorough flushing of the fluid cooler and fluid cooler tubes.
Diagnosis and testing
Transmission Cooling
Inspection and Verification
1 . Verify the customer concern by operating the system.
2 . Visually inspect for obvious signs of mechanical or electrical damage.
Visual Inspection Chart
Mechanical
Feed and return tubes
Connections to the automatic transmission and the automatic transmission fluid cooler
Automatic transmission fluid level
1 . If an obvious cause for an observed or reported concern is found, correct the cause (if possible)
before proceeding to the next step.
2 . If the concern is not visually evident, verify the sympton and refer to the Sympton chart.
Symptom chart
Condition
Possible sources
Action
Over heating of the
automatic
transmission.
Obstruction in the automatic
transmission fluid cooler.
Flush out the automatic transmission
fluid cooler with new automatic
transmission fluid.
If the flushing is unsucessful install a
new automatic transmission fluid
cooler.
Over heating of the
automatic
transmission.
Obstruction in the automatic
transmission fluid tubes.
Flush out the automatic transmission
fluid cooler tubes with new
automatic transmission fluid.
If the flushing is unsucessful install
new automatic transmission fluid
cooler tubes.
Loss of automatic
transmission fluid
Connections to the automatic
transmission and the automatic
transmission fluid cooler.
Check the torque of the tubes.
Check the tubes, connections and
seals.
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