Nissan Terrano r20e. Manual — part 344
ZD ENGINE RHD MODELS
YHA458
SERVICE PROCEDURES
Refrigerant Lines (Cont’d)
HA-20
Compressor Mounting
Belt Tension
I
Refer to MA section.
RHA980D
SERVICE PROCEDURES
HA-21
Lubrication Oil
Name: Nissan A/C System Oil Type R
Part number: KLH00-PAGR0
Maintenance of Oil Quantity in Compressor
The oil used to lubricate the compressor circulates through the
system with the refrigerant. Whenever any component of the sys-
tem is replaced or a large amount of gas leakage occurs, add oil
to the compressor to maintain the specified amount.
If oil quantity is not maintained properly, the following malfunctions
may result:
I
Lack of oil: May lead to a seized compressor
I
Excessive oil: Inadequate cooling (thermal exchange impeded)
Checking and Adjusting
Adjust the oil quantity according to the flowchart shown below.
START
Can oil return operation be performed?
I
A/C system works properly.
I
There is no evidence of a large amount
of oil leakage.
No
E
Yes
Perform oil return operation, proceeding as follows:
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Start engine, and set the following conditions:
I
Test condition
Engine speed: Idling to 1,200 rpm
A/C or AUTO switch: ON
Blower speed: Max. position
Temp. control: Optional [Set so that intake air temperature is 25 to
30°C (77 to 86°F).]
2. Perform oil return operating for about 10 minutes.
3. Stop engine.
CAUTION:
If excessive oil leakage is noted, do not perform the oil return operation.
Should the compressor be replaced?
No
Yes
q
A
(Go to next page.)
Is there any part to be replaced?
(Evaporator, condenser, liquid tank or in
case there is evidence of a large amount
of oil leakage.)
No
E
Yes
After replacing any of the following major components of the system, be sure
to add the correct amount of oil to the system.
Amount of oil to be added
*1: If compressor is replaced, addition of oil is included in the flow chart.
*2: If refrigerant leak is small, no addition of oil is needed. “Ratio” in this table
indicates the ratio of added oil to the overall amount of oil needed in the
system.
Carry out the A/C performance test.
F
Part replaced
Oil to be added to system
Remarks
Amount of oil m
(Imp fl oz)
Evaporator
75 (2.6)
—
Condenser
75 (2.6)
—
Liquid tank
5 (0.2)
Add if compressor is
not replaced. *1
In case of refrigerant
leak
30 (1.1)
Large leak
—
Small leak *2
H
H
H
H
H
LUBRICATION OIL — Checking and Adjusting
HA-22
q
A
1. Discharge refrigerant into the refrigerant recovery/recycling equipment. Measure oil discharged into the recovery/recycling
equipment.
2. Drain the oil from the “old” (removed) compressor into a graduated container, and record the amount of oil drained.
3. Drain the oil from the “new” compressor into a separate, clean container.
4. Measure an amount of the new oil equivalent to that drained from the “old” compressor, and add this oil to the “new” com-
pressor through the drain plug or suction port opening.
5. Measure an amount of the “new” oil equivalent to that recovered during discharging, and add this oil to the “new” compressor
through the drain plug or suction port opening.
6. If the liquid tank also needs to be replaced, add an additional 5 m
(0.2 Imp fl oz) of oil at this time.
Do not add this 5 m
(0.2 Imp fl oz) of oil if only replacing the compressor.
SHA563D
H
LUBRICATION OIL — Checking and Adjusting
Checking and Adjusting (Cont’d)
HA-23
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