Mitsubishi Outlander XL. Manual - part 1203

 

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Mitsubishi Outlander XL. Manual - part 1203

 

 

REFRIGERANT LEVEL CHECK, DRAING, AND CHARGING

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REFRIGERANT LEVEL TEST

Use  the  refrigerant  recovery  station  to  remove  all  of  the
refrigerant, and then calculate the amount of the refrigerant and
charge it.

NOTE: 

Refer to the Refrigerant Recovery and Recycling

Unit’s Instruction Manual for operation of the unit.

METHOD BY USING REFRIGERANT RECOVERY

AND RECYCLING UNIT

Using  the  refrigerant  recovery  and  recycling  unit,  refill  the
refrigerant.

NOTE: 

Refer to the Refrigerant Recovery and Recycling

Unit’s Instruction Manual for operation of the unit.

DISCHARGING SYSTEM

Use  the  refrigerant  recovery  unit  to  discharge  refrigerant  gas
from the system.

NOTE: 

Refer to the Refrigerant Recovery and Recycling

Unit’s Instruction Manual for operation of the unit.

CHARGING

Use the refrigerant recovery station to charge the refrigerant.

NOTE: 

Refer to the Refrigerant Recovery and Recycling

Unit’s Instruction Manual for operation of the unit.

REFILLING OF OIL IN THE A/C SYSTEM

Too little oil will provide inadequate compressor lubrication and
cause a compressor failure. Too much oil will increase discharge
air temperature.
When  a  compressor  is  installed  at  the  factory,  it  contains  80
cm3(4.7  fl.oz)  of  refrigerant  oil.  While  the  A/C  system  is  in
operation,  the  oil  is  carried  through  the  entire  system  by  the
refrigerant.  Some  of  this  oil  will  be  trapped  and  retained  in
various parts of the system.
When  the  following  system  components  are  changed,  it  is
necessary  to  add  oil  to  the  system  to  replace  the  oil  being
removed with the component.

Compressor oil: SUN PAG 56

Quantity:

Evaporator: 60 cm3(2.0 fl.oz)
Condenser: 15 cm3(0.5 fl.oz)

AIR CONDITIONING

55A-103

ON-VEHICLE SERVICE

Suction hose: 10 cm3(0.3 fl.oz)

PERFORMANCE TEST

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The vehicles to be tested should be parked out of direct sunlight.

ZC602549

Low-pressure 
valve

High-pressure 
valve

Gauge manifold

Charging 
hose (Red)

A

Sleeve

Charging 
hose (Blue)

Adaptor 
valve 
(For low-pres- 
sure)

Adaptor 
valve 
(For high- 
pressure)

Low- 
pressure 
service 
valve

High- 
pressure 
service 
valve

0000

1.

Close the high and low-pressure valve of the gauge manifold.

2.

Connect the charging hose (blue) to the low-pressure valve
and  connect  the  charging  hose  (red)  to  the  high-pressure
valve of the gauge manifold.

3.

Install the quick joint (for low-pressure) to the charging hose
(blue), and connect the quick joint (for high-pressure) to the
charging hose (red).

To connect the quick joint, press section A firmly against
the service valve until a click is heard.

When  connecting,  run  your  hand  along  the  hose  while
pressing to ensure that there are no bends in the hose.

4.

Connect the quick joint (for low-pressure) to the low-pressure
service valve and connect the quick joint (for high-pressure)
to the high-pressure service valve.

NOTE: 

The high-pressure service valve is on the A/C pipe

and the low-pressure service valve is on the suction hose.

5.

Start the engine.

6.

Set the A/C controls as follows:

A/C switch: A/C - ON position

Mode selection: FACE position

Temperature control: MAXIMUM COOLING position

Air selection: RECIRCULATION position

Blower switch: Maximum air volume

7.

Adjust engine speed to idle speed with A/C clutch engaged.

8.

Engine should be warmed up with doors and windows opened.

ZC603577

Thermometer

9.

Insert a thermometer in the center air outlet and operate the
engine for 20 minutes.

NOTE: 

If the A/C clutch cycles, take the reading before

the clutch disengages.

10.

Note the discharge air temperature.

PERFORMANCE TEMPERATURE CHART

Garage ambient air temperature °C (°F)

20 (68)

25 (77)

30 (86)

35 (95)

Discharge air temperature °C (°F)

3.5  (38.3)  -
13.2 (55.7)

8.5  (47.3)  -
20.3 (68.0)

13.4  (56.1)  -
23.1 (73.6)

18.4  (65.1)  -
34.4 (93.9)

Compressor high pressure kPa (psi)

972  (141)  -
1205 (175)

1123  (163)  -
1390 (202)

1275  (185)  -
1574 (228)

1426  (207)  -
1759 (255)

55A-104

AIR CONDITIONING

ON-VEHICLE SERVICE

Garage ambient air temperature °C (°F)

20 (68)

25 (77)

30 (86)

35 (95)

Compressor low pressure kPa (psi)

176  (25.5)  -
301 (43.7)

211  (30.6)  -
335 (48.6)

245  (35.5)  -
370 (53.7)

280  (40.6)  -
404 (58.6)

REFRIGERANT LEAK REPAIR PROCEDURE

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LOST CHARGE

If the system has lost all charge due to a leak:

1.

Evacuate the system. (Refer to P.55A-103).

2.

Charge the system with approximately 0.453 kg (1
pound) of refrigerant.

3.

Check for leaks.

4.

Discharge the system.

5.

Repair leaks.

Replacement  filter-drier  units  must  be  sealed
while in storage. The drier used in these units will
saturate  water  quickly  upon  exposure  to  the
atmosphere. When installing a drier, have all tools
and  supplies  ready  for  quick  assembly  to  avoid
keeping  the  system  open  any  longer  than
necessary.

6.

Replace receiver drier.

7.

Evacuate and charge system.

LOW CHARGE

If the system has not lost all of its refrigerant charge;
locate and repair all leaks. If it is necessary to increase
the system pressure to find the leak (because of an
especially low charge) add refrigerant. If it is possible
to repair the leak without discharging the refrigerant
system,  use  the  procedure  for  correcting  low
refrigerant level.

HANDLING TUBING AND FITTINGS

Kinks in the refrigerant tubing or sharp bends in the
refrigerant hose lines will greatly reduce the capacity
of the entire system. High pressures are produced in
the system when it is operating. Extreme care must
be  exercised  to  make  sure  that  all  connections  are
pressure tight. Dirt and moisture can enter the system
when it is opened for repair or replacement of lines or
components.  The  following  precautions  must  be
observed. The system must be completely discharged
before  opening  any  fitting  of  connection  in  the
refrigeration system. Open fittings with caution even
after the system has been discharged. If any pressure
is  noticed  as  a  fitting  is  loosened,  allow  trapped
pressure to bleed off very slowly.
Never attempt to rebend formed lines to fit. Use the
correct  line  for  the  installation  you  are  servicing.  A
good rule for the flexible hose lines is keep the radius
of all bends at least 10 times the diameter of the hose.
Sharper bends will reduce the flow of refrigerant. The
flexible hose lines should be routed so that they are
at least 80 mm (3.1 inches) from the exhaust manifold.
It is good practice to inspect all flexible hose lines at
least  once  a  year  to  make  sure  they  are  in  good
condition and properly routed.
On standard plumbing fittings with O-rings, these O-
rings are not reusable.

COMPRESSOR NOISE CHECK

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You  must  first  know  the  conditions  when  the  noise
occurs. These conditions are: weather, vehicle speed,
in  gear  or  neutral,  engine  temperature  or  any  other
special conditions.
Noises that develop during A/C operation can often be
misleading.  For  example:  what  sounds  like  a  failed
front  bearing  or  connecting  rod,  may  be  caused  by
loose bolts, nuts, mounting brackets, or a loose clutch
assembly. Verify accessory drive belt tension (power
steering or generator).
Improper  accessory  drive  belt  tension  can  cause  a
misleading  noise  when  the  compressor  is  engaged
and  little  or  no  noise  when  the  compressor  is
disengaged.

Drive  belts  are  speed-sensitive.  That  is,  at  different
engine  speeds,  and  depending  upon  belt  tension,
belts  can  develop  unusual  noises  that  are  often
mistaken  for  mechanical  problems  within  the
compressor.

ADJUSTMENT

1.

Select a quiet area for testing. Duplicate conditions
as much as possible. Switch the compressor on and
off  several  times  to  clearly  identify  compressor
noise.  To  duplicate  high  ambient  conditions  (high
head  pressure),  restrict  air  flow  through  the
condenser.  Install  a  manifold  gauge  set  to  make
sure discharge pressure doesn't exceed 2,070 kPa
(300.2 psi).

AIR CONDITIONING

55A-105

ON-VEHICLE SERVICE

2.

Tighten  all  compressor  mounting  bolts,  clutch
mounting bolt, and compressor drive belt. Check to
assure clutch coil is tight (no rotation or wobble).

3.

Check refrigerant hoses for rubbing or interference
that can cause unusual noises.

4.

Check refrigerant charge. (Refer to P.55A-105).

5.

Recheck compressor noise as in Step 1.

6.

If  noise  still  exists,  loosen  compressor  mounting
bolts and retighten. Repeat Step 1.

7.

If noise continues, replace compressor and repeat
from Step 1.

POWER RELAY CHECK

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BLOWER RELAY CONTINUITY CHECK

ZC603579

4

1

2

3

3

1

4

2

Blower relay

Battery voltage

Tester connection Specified

condition

Not applied

3 - 4

Open circuit

Connect  terminal
1  to  the  positive
battery terminal

Connect  terminal
2  to  the  negative
battery terminal

3 - 4

Less than 2 ohms

55A-106

AIR CONDITIONING

ON-VEHICLE SERVICE

 

 

 

 

 

 

 

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