Mitsubishi Lancer (4A9 engine). Manual - part 308

COMPRESSOR ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-113

DISASSEMBLY AND REASSEMBLY <1600 
(M/T) >

M1552004603506

ACB01638

3

10

5

4

6

7

8

9

2

1

AB

16 ± 1 N·m

N

2.0 ± 0.2 N·m

5.9 ± 0.6 N·m

Refrigerant temperature 
switch sealant: KE-347W

11

9.8 ± 2.0 N·m

Refrigerant temperature switch 
disassembly steps 

1.

Bracket

2.

Refrigerant temperature switch
A/C compressor clutch 
disassembly steps 

>>

F

<<

•

Air gap adjustment

<<

A

>>

>>

E

<<

3.

Self-locking nut

4.

Armature

5.

Shim

>>

D

<<

6.

Snap ring

<<

B

>>

>>

C

<<

7.

Rotor

8.

Snap ring

>>

B

<<

9.

A/C compressor coil

10. A/C compressor

>>

A

<<

11. A/C compressor high pressure 

relief valve

DISASSEMBLY SERVICE POINTS

<<A>> SELF-LOCKING NUT REMOVAL

AC709546AC

MB991386

MB991367

Use the special tools below to remove the self-lock-
ing nut.

<<B>> ROTOR REMOVAL

AC903427

MB990810

MD999566

MB992623

Bolt

Rotor

AL

COMPRESSOR ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-114

CAUTION

• Be sure to use the guide (MB992623) when 

the side bearing puller (MB990810) is used to 
prevent the damage of A/C compressor.

• If the threaded shaft of side bearing puller 

(MB990810) is turned than necessary, the 
rotor may be distorted. Therefore, turn the 
threaded shaft lightly only by hand without 
using any tools.

Rotor can be removed by hand, but if it is difficult to 
remove it, use the guide (MB992623) and the side 
bearing puller (MB990810) as shown.

REASSEMBLY SERVICE POINTS

>>A<< A/C COMPRESSOR HIGH PRESSURE 
RELIEF VALVE INSTALLATION

CAUTION

Be careful not to damage the O-ring when install-
ing the high-pressure relief valve. Apply the 
specified refrigerating machine oil the high-pres-
sure relief valve mounting hole before installa-
tion

Check that O-ring is installed to the high-pressure 
relief and use the adjust torque wrench to install the 
high-pressure relief valve to the main body of the 
compressor.

>>B<< A/C COMPRESSOR COIL ATTACHMENT

ACB02034AC

A/C compressor 
coil projection

Compressor
unit pin hole

Line up the pin hole on the compressor unit with the 
A/C compressor coil projection and attach.

COMPRESSOR ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-115

>>C<< ROTOR INSTALLATION

CAUTION

If the outer wheel side of rotor is pushed, an 
abnormal noise can be generated because the 
inside of rotor is damaged, therefore, always 
push the inner wheel side.

AC903428AJ

MB992623

MB992624

Rotor

Coil

AC902977

MB992623

MB992624

Rotor

A/C compressor
coil

AB

Install the rotor while pushing the inner wheel side 
slowly using the pusher (MB992624) and guide 
(MB992623).

NOTE: Insert the rotor in a direction perpendicular to 
the A/C compressor.

>>D<< SNAP RING INSTALLATION

AC209126AD

Snap ring

Rotor

A/C compressor coil

Tapered part

Using snap ring pliers, fit the snap ring so that the 
snap ring’s tapered part is on the outside.

>>E<< SELF-LOCKING NUT INSTALLATION

AC709546AC

MB991386

MB991367

Using a special tool, as when removing the nut, 
secure the armature and tighten the self-locking nut.

>>F<< AIR GAP ADJUSTMENT

ACB02035

Thickness
gauge

AB

Check whether or not the air gap of the clutch is 
within the standard value.

Standard value:

 0.25 

− 0.45 mm

NOTE: If there is a deviation of the air gap from the 
standard value, make the necessary adjustment by 
adjusting the number of shims.

COMPRESSOR ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55A-116

DISASSEMBLY AND REASSEMBLY 
<Except 1600 (M/T) > 

M1552004603517

AC808733

3

10

5

4

6

7

8

9

2

1

AC

16 ± 1 N·m

N

2.0 ± 0.2 N·m

5.9 ± 0.6 N·m

Refrigerant temperature 
switch sealant: KE-347W

11

9.8 ± 2.0 N·m

Refrigerant temperature switch 
disassembly steps 

1.

Bracket

2.

Refrigerant temperature switch
A/C compressor clutch 
disassembly steps 

>>

F

<<

•

Air gap adjustment

<<

A

>>

>>

E

<<

3.

Self-locking nut

4.

Armature

5.

Shim

>>

D

<<

6.

Snap ring

<<

B

>>

>>

C

<<

7.

Rotor

8.

Snap ring

>>

B

<<

9.

A/C compressor coil

10. A/C compressor

>>

A

<<

11. A/C compressor high pressure 

relief valve

DISASSEMBLY SERVICE POINTS

<<A>> SELF-LOCKING NUT REMOVAL

AC709546AC

MB991386

MB991367

Use the special tools below to remove the self-lock-
ing nut.

<<B>> ROTOR REMOVAL