Mitsubishi Galant. Manual - part 727

COMPRESSOR ASSEMBLY AND TENSION PULLEY

TSB Revision

HEATING AND AIR CONDITIONING

55-34

Post-installation Operation

•

Drive Belt Tension Adjustment (2.4: Refer to 
GROUP 11A, On-vehicles Service, 

P.00-39

   3.0: 

Refer to GROUP 11C, On-vehicles Service.)

•

Refrigerant Charging (Refer to 

P.55-21

.)

AC001405

1

2

3

3

4

5

6

<2.4L ENGINE>

COMPRESSOR OIL:
SUN PAG 56

N

N

25 ± 4 N·m
18 ± 4 ft-lb

1

2

3

4

5

6

<3.0L ENGINE>

AB

25 ± 4 N·m
18 ± 4 ft-lb

PIPING CONNECTOR

REMOVAL STEPS

•

UNDER COVER (REFER TO 

P.55-

40

.)

•

CONDENSER FAN MOTOR <3.0L 
ENGINE> (REFER TO 

P.55-40

.)

<<A>>

1.

DRIVE BELT

<<B>>

2.

DISCHARGE HOSE AND 
SUCTION HOSE

3.

O-RING

<<C>>

>>A<<

4.

COMPRESSOR

5.

TENSION PULLEY

6.

COMPRESSOR BRACKET

REMOVAL STEPS (Continued)

COMPRESSOR ASSEMBLY AND TENSION PULLEY

TSB Revision

HEATING AND AIR CONDITIONING

55-35

REMOVAL SERVICE POINTS

<<A>> DRIVE BELT REMOVAL
1. Loosen the nut "A" for holding.

2. Loosen the bolt "B" for adjustment.

3. Remove the drive belt.

<<B>> SUCTION HOSE, DISCHARGE HOSE 
DISCONNECTION

CAUTION

Seal the hoses completely, otherwise the compressor oil 
and receiver will absorb water vapor easily, possibly 
damaging the compressor and deteriorating performance.
Plug the disconnected hose and compressor nipple to prevent 
foreign matter from getting into them.

<<C>> COMPRESSOR REMOVAL
When removing the compressor, be careful not to spill the 
compressor oil.

INSTALLATION SERVICE POINT

>>A<< COMPRESSOR INSTALLATION
If a new compressor is installed, first adjust the amount of oil 
according to the procedures described below, and then install 
the compressor.

1. Measure the amount [X cm

3

 (X floz)] of oil within the 

removed compressor.

2. Measure the amount [X cm

3

 (X floz)] of oil within the 

removed compressor.

New compressor oil amount

140 cm

3

 

−−−−

 X cm

3

 = Y cm

3

 (4.7 floz 

−−−−

 X floz = Y floz) 

NOTE: Y cm

3

 (Y floz) indicates the amount of oil in the 

refrigerant line, the condenser, the evaporator, etc.

AC001406AB

A

B

<3.0L ENGINE>

A

B

<2.4L ENGINE>

A

VIEW A

COMPRESSOR ASSEMBLY AND TENSION PULLEY

TSB Revision

HEATING AND AIR CONDITIONING

55-36

NOTE: When replacing the following parts at the same times 
as the compressor, subtract the rated oil amount of the each 

part from Y cm

3

 (Y floz) and discharge from the new 

compressor.

Quantity:

••••

Evaporator: 60 cm

3

 (2.0 floz)

••••

Condenser: 15 cm

3

 (0.5 floz)

••••

Suction hose: 10 cm

3

 (0.3 floz)

••••

Receiver: 10 cm

3

 (0.3 floz) 

INSPECTION

M1552009300051

REFRIGERANT TEMPERATURE SWITCH CHECK

When the A/C is off, check that there is continuity between the 
refrigerant-temperature switch terminals. If not, replace the 
switch.

COMPRESSOR MAGNETIC CLUTCH OPERATION 
INSPECTION

M1552008500115

Connect the battery (+) terminal to the compressor magnetic 
clutch connector terminal 1 <2.4L engine> or terminal 4 <3.0L 
engine>, and ground the battery (

−

) terminal to the body of the 

compressor. The condition is normal if the sound of the 
magnetic clutch (click) can be heard.

AC001407

REFRIGERANT-
TEMPERATURE
SWITCH TERMINALS

AB

AC001367

1 2

3 4

AB

<2.4L ENGINE>

<3.0L ENGINE>

MAGNETIC CLUTCH
CONNECTOR

MAGNETIC CLUTCH
CONNECTOR

COMPRESSOR ASSEMBLY AND TENSION PULLEY

TSB Revision

HEATING AND AIR CONDITIONING

55-37

REVOLUTION PICK-UP SENSOR CHECK

M1552004500050

Measure the resistance between terminals 1 and 3. Check that 
the measured value is at the standard value.

Standard value: 405 

±±±±

 35 

Ω

Ω

Ω

Ω

 when the ambient 

temperature is 20 

°°°°

C (68 

°°°°

F)

MAGNETIC CLUTCH

M1552004600079

DISASSEMBLY AND ASSEMBLY

Required Special Tools:

•

MB991367: Special Spanner

•

MB991386: Pin

AC003633

1 2

3 4

AB

REVOLUTION 
PICK-UP SENSOR

AC001409

1

2

3

4

5

6

6

7

7

8

8

9

9

10

3

4

N

N

<2.4L ENGINE>

<3.0L ENGINE>

AB

5

MAGNETIC CLUTCH DISASSEM-
BLY STEPS

1.

BOLT <2.4L ENGINE>

2.

PULLEY <2.4L ENGINE>

>>E<<

•

AIR GAP ADJUSTMENT

<<A>>

>>D<<

3.

NUT

>>C<<

4.

ARMATURE PLATE

5.

SHIMS

>>B<<

6.

SNAP RING

7.

ROTOR

8.

SNAP RING

>>A<<

9.

CLUTCH COIL

REFRIGERANT TEMPERATURE 
SWITCH REMOVAL

10. REFRIGERANT TEMPERATURE 

SWITCH