Mitsubishi Lancer Evolution IX. Manual - part 562

OUTSIDE THERMO SENSOR

HEATER, AIR CONDITIONER AND VENTILATION

55-121

OUTSIDE THERMO SENSOR

INSPECTION

M1552014302138

Check to see that the resistance shown in the graph 
is almost satisfied when measuring the resistance 
between the sensor terminals under two or more dif-
ferent temperature conditions.

AC212287AF

Outside 
thermo sensor

AC103489AB

50

40

30

20

10

0

-30 -20

0

20

40 60

Resistance

(k )

Temperature (˚C)

COMPRESSOR ASSEMBLY AND TENSION PULLEY

HEATER, AIR CONDITIONER AND VENTILATION

55-122

COMPRESSOR ASSEMBLY AND TENSION PULLEY

REMOVAL AND INSTALLATION

M1552004100535

REMOVAL SERVICE POINTS
<<A>> FLEXIBLE SUCTION HOSE/FLEXI-
BLE DISCHARGE HOSE DISCONNEC-
TION

CAUTION

As the compressor oil and receiver are highly 
moisture absorbent, use a non-porous material 
to plug the hose and nipples.
To prevent the entry of dust or other foreign bodies, 
plug the dismantled hoses and compressor nipples.

<<B>> DRIVE BELT REMOVAL

The following operations will be needed due to the 
serpentine drive system with the alternator drive belt 
auto tensioner.

Pre-removal Operation
• Refrigerant Discharging (Refer to 

P.55-104

).

Post-installation Operation
• Drive Belt Tension Adjustment (Refer to GROUP 11A, 

On-vehicles Service 

− Drive Belt Tension Check 

P.11A-7

).

• Refrigerant Charging (Refer to 

P.55-104

).

AC310766AB

25 ± 4 N·m

N

1

2

4

5

6

3

1, 2

A/C compressor oil:
  SUN PAG 56

-Pipe coupling

N

3

Removal steps 

<<

A

>>

1.

Flexible suction hose connection

<<

A

>>

2.

Flexible discharge hose connection

3.

O-ring

<<

B

>>

4.

Drive belt

<<

C

>>

>>

A

<<

5.

A/C compressor

6.

A/C compressor bracket

Removal steps (Continued)

COMPRESSOR ASSEMBLY AND TENSION PULLEY

HEATER, AIR CONDITIONER AND VENTILATION

55-123

1. Securely insert the spindle handle or ratchet 

handle with a 12.7 mm insertion angle into the jig 
hole of the alternator drive belt auto tensioner, 
and turn the alternator drive belt auto tensioner 
anti-clockwise until it hits the stopper.

CAUTION

To reuse the alternator drive belt, draw an arrow 
indicating the rotating direction (clockwise) on 
the back of the alternator drive belt using chalk.
2. Align hole A with hole B, insert an L-shaped 

hexagon wrench, etc. to fix and then remove the 
alternator drive belt.

<<C>> A/C COMPRESSOR REMOVAL

Take care not to spill any compressor oil when 
removing the compressor.

INSTALLATION SERVICE POINT
>>A<< A/C COMPRESSOR INSTALLA-
TION

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 mL) of oil within the 

removed compressor.

2. Drain (from the new compressor) the amount of 

oil calculated according to the following formula, 
and then install the new compressor.
New compressor oil amount = 120 mL

120 mL

−X mL = Y mL

NOTE: Y mL indicates the amount of oil in the 
refrigerant line, the condenser, the evaporator, 
etc.
NOTE: When replacing the following parts at the 
same times as the compressor, subtract the rated 
oil amount of the each part from Y mL and dis-
charge from the new compressor.

Quantity:

• Evaporator: 60 mL

• Condenser: 15 mL

• Suction hose: 10 mL

• Receiver: 10 mL

INSPECTION

M1552014301834

COMPRESSOR MAGNETIC CLUTCH 
OPERATION CHECK

Connect the compressor connector terminal to the 
battery positive (+) terminal and earth the battery’s 
negative (

−) terminal to the compressor unit. At that 

time, the magnetic clutch should make a definite 
operating sound.

AC107640

AD

Hole A

Hole B

Alternator drive belt
auto tensioner

AC107641

AC

L-shaped
hexagon
wrench

Alternator drive belt
auto tensioner

AC005671

Magnetic clutch connector

AK

COMPRESSOR ASSEMBLY AND TENSION PULLEY

HEATER, AIR CONDITIONER AND VENTILATION

55-124

DISASSEMBLY AND REASSEMBLY

M1552004600808

DISASSEMBLY SERVICE POINT
<<A>> SELF-LOCKING NUT REMOVAL

Use the special tools to remove the self-locking nut.

• Special spanner (MB991367)

• Pin (MB991386)

AC100630

N

N

16 ± 1 N·m

10

4

6

7

8

9

5

1

2

AB

3

11

Cooling temperature switch 
disassembly steps 

1.

Snap ring

2.

Refrigerant temperature switch

3.

O-ring
Magnetic clutch disassembly 

>>

D

<<

•

Air gap adjustment

<<

A

>>

>>

C

<<

4.

Self-locking nut

5.

Armature

>>

B

<<

6.

Snap ring

7.

Rotor

8.

Snap ring

>>

A

<<

9.

Field core

10. Shim
11. A/C compressor

Magnetic clutch disassembly 

AC100633AB

MB991386

MB991367