Mitsubishi Lancer Evolution VI. Manual — part 118

– Compressor and Tension Pulley

HEATER AND MANUAL
AIR CONDITIONER

55-24

REMOVAL SERVICE POINTS

A

A

"

DRIVE BELT REMOVAL

1.

Align the hole in the auto-tensioner bracket with that in
the arm and insert a screwdriver into the holes.

2.

Remove the drive belt.

A

B

"

SUCTION HOSE, DISCHARGE HOSE
DISCONNECTION

Plug the disconnected hose and the compressor nipple not
to let foreign matter get into them.

Caution
Seal the hoses completely, otherwise the compressor
oil and receiver will absorb water vapour easily.

A

C

"

COMPRESSOR REMOVAL

When doing this work, be careful not to spill the compressor
oil.

Auto-tensioner

Hole in
arm

Hole in
bracket

Screwdriver (+)

– Compressor and Tension Pulley

HEATER AND MANUAL
AIR CONDITIONER

55-25

INSTALLATION SERVICE POINT

"

A

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 m

ȏ

) 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 to 140 m

ȏ

– X m

ȏ

= Y m

ȏ

NOTE
(1) “120 to 140 ml” is the amount of oil filled in a new

compressor.

(2) Y m

ȏ

indicates the amount of oil in the refrigerant

line, the condenser, the cooling unit etc.

INSPECTION

REFRIGERANT-TEMPERATURE SWITCH SIMPLE
CHECK

When the A/C is off, check that there is continuity between
the refrigerant-temperature switch terminals. If no, replace
the compressor assembly.

COMPRESSOR MAGNETIC CLUTCH OPERATION
INSPECTION

Connect the battery (+) terminal to the compressor side
terminal, and earth the battery (–) terminal to the body of
the compressor. The condition is normal if the sound of the
magnetic clutch (click) can be heard.

A

View A

Refrigerant temperature
switch terminal

– Compressor and Tension Pulley

HEATER AND MANUAL
AIR CONDITIONER

55-26

MAGNETIC CLUTCH

DISASSEMBLY AND REASSEMBLY

4

6

2

1

5

3

Disassembly steps

"

E

A D

Air gap adjustment

A

A

" "

D

A

1. Self-locking nut

"

C

A

2. Armature
3. Shims

"

B

A

4. Snap ring
5. Rotor

"

A

A

6. Field core

DISASSEMBLY SERVICE POINT

A

A

"

SELF-LOCKING NUT REMOVAL

REASSEMBLY SERVICE POINTS

"

A

A

FIELD CORE INSTALLATION

When installing the field core to the compressor body, install
so that the pin hole of the compressor body and the field
core projection are aligned.

MB991386

MB991367

Field core
projection

Compressor
body pin hole

– Compressor and Tension Pulley

HEATER AND MANUAL
AIR CONDITIONER

55-27

"

B

A

SNAP RING INSTALLATION

Install the snap ring using a pair of snap ring pliers so that
the tapered surface is at the outer side.

"

C

A

ARMATURE INSTALLATION

Align the serration projection of the crankshaft with the notch
in the armature, and then fit them together.

"

D

A

SELF-LOCKING NUT INSTALLATION

Use the special tool to hold the magnet clutch, and tighten
the self-locking nut in the same manner as removal.

"

E

A

AIR GAP ADJUSTMENT

Check whether or not the air gap of the clutch is within the
standard value. If there is a deviation of the air gap from
the standard value, make the necessary adjustment by
adjusting the number of shims.

Standard value: 0.4 – 0.6 mm

Snap ring

Rotor

Field core

Tapered part

Armature

Notch

Crankshaft

Serration
projection

Thickness gauge