adding oil JAGUAR X308 1998 2.G Workshop Manual

            310‐01:  Fu el Tank  and  Lines  
                 Removal and  Installation  
                     Fuel Level  Sensor  (88.25.32)  
                     Fuel Pump  (19.45.08)  
                     Fuel Tank  (19.55.01)  
 
             310‐02
:
 Acceleration  Control  
                 General Procedures  
                     Accelerator  Cable  Adjustment  (12.20.05)  
                 Removal and  Installation  
                     Accelerator  Cable  (19.20.06)  
 
             310‐03:  Speed  Control  
                 Diagnosis  and  Testing  
                     Speed Con
trol 
 
    4:  Electrical  
 
        412:  Climate  Control  System  
 
             412‐00:  Climate  Control  System  ‐ General  Information 
                 Specification  
                 Description  and  Operation  
                     Climate Control System  
                 Diagnosis  and  Testing  
                     Climate Control System  
                 General Procedures  
                     Air Conditioning  (A/C)  System  Check ‐  Retail Procedure  
                     Air Conditioning  (A/C)  System  Recovery,  Evacuation  and  Charging  (82.30.30)  
                     Contaminated  Refrigerant  Ha
ndling  
                     Manifold Gauge  Set Connection  
                     Refrigerant  Adding (82.30.02)  
                     Refrigerant  Oil Adding  
                     Refrigerant  System Tests  
 
             412‐01:  Air  Distribution  and  Filtering  
                 Description  and  Operation  

Climate Co
ntrol System - General
Information - Refrigerant Adding
Gen
eral Procedures
CAUTION: If oil was drawn out during the recovery process, the correct amount may be added directly from the
recovery, recycle and recharge station (if so equipped) prior to the charging process. It must be stressed that the need to
protect compressor oil from moisture is vital, observe the pr ocedures in HANDLING LUBRICATING OIL and those concerning
excessive engine speed.


1. In order that the
air conditioning system may operate
efficiently it must contain a full refrigerant charge. The
indications of some system defects, and the results of certain
tests, will show that a low charge is the most probable cause of
the fault. In such cases the ch arge should be recovered from
the system, the weight noted, and the correct amount added.
Should refrigerant be added in liquid form, the engine speed
must not exceed 2000 rpm for a period of two minutes after
first running the compressor. If the engine speed is excessive,
compressor damage may occur du e to the lubricating oil and
the liquid refrigerant being initia lly forced around the system as
a 'slug', thus taking oil away from the compressor. These
marginal lubrication conditions in the compressor will cease as
the refrigerant becomes gaseous.
Never attempt to estimate the amount of refrigerant in a
system. Always recover and rech arge with the correct charge
weight; this is the only accurate method.

Climate Control System - General Informatio
n - Refrigerant Oil Adding
Gen
e
ral Procedures
CAUTION: Always decant fresh oil from a sealed container and do not leave oil exposed to the atmosphere. PAG oil is
very hygroscopic (absorbs wate r) and will rapidly attract atmospheric moisture. PAG oil must NEVER be mixed with mineral
based oils. Do not re-use oil following a recovery cycle, dispose of it safely.
Original Compressor

New Compressor
1. The amount of oi
l drawn out during a recovery procedure will
be dependent on the state of the system and the rate of
recovery. The quantity will be a pproximately 30 to 40 ml.; this
may vary, and the figure is given only for guidance.
The oil separator vessel in the recovery equipment must be
clean and empty at the start of the process, so that the quantity
of oil which is drawn out may be accurately measured.
• NOTE: The equipment manufactu rer's instructions must be
followed when adding oil directly into an original, or new unit,
owing to rectification work to the existing compressor, or the
need to fit a new compressor.
Oil may be added to the system either via the recovery, recycle
and recharge station or by us ing a proprietary oil injector.
Alternatively, if the compress or has been removed from the
vehicle, the oil may be added directly to the compressor.
1. From an existing compressor, drain the oil into a measuring
cylinder and record the amount. Fl ush the unit out with fresh oil
and drain thoroughly. Replenish the compressor with the same
amount of oil that was originally drained out and immediately
plug all orifices ready for refitting to the vehicle.
1. Drain and discard th e transit lubricating oil from the new
compressor before it is be fitted.
To avoid over-filling the system, an allowance must be made for
the quantity of oil found in the original compressor and the
quantity deposite d in the recovery equipment oil separator from
the charge recovery operation.
Typical example:
D rained
from original compressor - 50 ml.
R
e
covered from oil separator - 40 ml.
Q
u
antity to be put in new compressor - 50 + 40 = 90 ml.
2. The difference between the combined total quantity of
recovered and drained oil and the nominal capacity of the
system (180 ml.), is due to th e quantity of oil remaining in
components such as the cond enser, receiver drier or
evaporator. This oil is no t normally recoverable.
The same procedure may be followed if a problem has occurred
due to oil leakage, as the amount of oil lost is generally small. If
the recovery process has no t been necessary, because
refrigerant has also been lost, then only the quantity drained
from the original compress or needs to be replaced.