Freelander Service Procedures
GENERAL INFORMATION
03-31
When a major repair has been completed, a leak test
should be conducted; refer to the air conditioning
section of this manual for the correct procedure.
Refrigerant oil
Use an approved refrigerant lubricating oil:
ND Oil 8
CAUTION: Do not use any other type of
refrigerant oil.
CAUTION: Refrigerant oil easily absorbs water
and must not be stored for long periods. Do not
pour unused oil back into the container.
When renewing system components, add the
quantities of refrigerant oil recommended in the Air
Conditioning section of this manual.
Compressor
A new compressor is sealed and pressurised with
Nitrogen gas. When fitting a new compressor, slowly
release the sealing cap; gas pressure should be
heard to vent as the seal is broken.
CAUTION: A new compressor should always be
sealed and could be pressurised with nitrogen
gas. To avoid possible oil loss, release the
sealing cap(s) slowly. Do not remove the cap(s)
until immediately prior to connecting the air
conditioning pipes to the compressor.
Rapid refrigerant discharge
If the air conditioning system is involved in accident
damage and the system is punctured, the refrigerant
will discharge rapidly. The rapid discharge of
refrigerant will also result in the loss of most of the
oil from the system. The compressor must be
removed and all the remaining oil in the compressor
drained and refilled in accordance with the 'Air
Conditioning Compressor Replacement Procedure'.
Air conditioning compressor
replacement
A new compressor is supplied filled with a full charge
of (X cm
3
) of refrigerant oil.
A new compressor is supplied with an oil fill (X cm) of
120 cm
3
.
A calculated quantity of oil must be drained from the
new compressor before fitting. To calculate the
quantity of oil to be drained:
1 Remove the drain plug from the old
compressor.
2 Invert the compressor and gravity drain the oil
into a calibrated measuring cylinder. Rotate the
compressor clutch to ensure the compressor is
completely drained.
3 Note the quantity of oil drained (Y cm
3
).
4 Calculate the quantity of oil to be drained from
the new compressor using the following
formula:
X cm
3
– (Y cm
3
+ 20 cm
3
) = Q cm
3
5 Remove the drain plug from the new
compressor and drain Q cm
3
of oil.
6 Fit and tighten the compressor drain plug.
System components
When renewing system components, add the
following quantities of refrigerant oil:
l
Condenser = 40 cm
3
l
Evaporator = 30 cm
3
l
Receiver drier = 15 cm
3
l
Pipe or hose = 5 cm
3
