Mitsubishi Evolution X. Manual — part 1295
COMPRESSOR ASSEMBLY AND TENSION PULLEY
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-131
REMOVAL SERVICE POINTS
.
<<A>> FLEXIBLE SUCTION HOSE AND FLEXIBLE
DISCHARGE HOSE DISCONNECTION
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>> A/C COMPRESSOR AND CLUTCH
ASSEMBLY REMOVAL
Take care not to spill any compressor oil when removing the
compressor.
INSTALLATION SERVICE POINT
.
>>A<< A/C COMPRESSOR AND CLUTCH ASSEM-
BLY 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 fl.oz) 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 = 80cm
2
(2.7 fl.oz)
80 cm
3
− X cm
3
= Y cm
3
(2.7 fl.oz.
− X fl.oz. = Y fl.oz)
NOTE: Y cm
3
(Y fl.oz) indicates the amount of oil in the refrig-
erant 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 each part from
Y cm
3
(Y fl.oz) and discharge from the new compressor.
3. Tighten A/C compressor and clutch assembly mounting
bolts to the specified torque in the order of number shown in
the figure.
Tightening torque: 23
± 6 N⋅ m
AC506759
AE
1
2
3
A/C compressor
and clutch assembly
COMPRESSOR ASSEMBLY AND TENSION PULLEY
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-132
INSPECTION
M1552014303711
COMPRESSOR A/C COMPRESSOR CLUTCH
OPERATION CHECK
Connect the compressor connector terminal to the battery posi-
tive (+) terminal and ground the battery’s negative (-) terminal
to the compressor unit. At that time, the A/C compressor clutch
should make a definite operating sound.
DISASSEMBLY AND ASSEMBLY
M1552004601328
Required Special Tools:
• MB991367: Special Spanner
• MB991386: Pin
AC506471
AC505743
2
1
3
4
5
6
7
8
9
11
16 ± 1 N·m
12 ± 1 ft-lb
10
AH
N
2.0 ± 0.2 N·m
18 ± 2 in-lb
2.0 ± 0.2 N·m
18 ± 2 in-lb
Cooling temperature switch
disassembly steps
1.
Bracket
2.
Snap ring
3.
Cooling temperature switch
A/C compressor clutch
disassembly
>>
D
<<
•
Air gap adjustment
<<
A
>>
>>
C
<<
4.
Self-locking nut
5.
Armature
6.
Shim
>>
B
7.
Snap ring
8.
Rotor
9.
Snap ring
>>
A
10. Field core
11. A/C compressor
A/C compressor clutch
disassembly (Continued)
COMPRESSOR ASSEMBLY AND TENSION PULLEY
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-133
DISASSEMBLY SERVICE POINT
.
<<A>> SELF-LOCKING NUT REMOVAL
ASSEMBLY SERVICE POINTS
.
>>A<< FIELD CORE ATTACHMENT
Line up the pin hole on the compressor unit with the field core
projection and attach.
.
>>B<< SNAP RING INSTALLATION
Using snap ring pliers, fit the snap ring so that the snap ring’s
tapered part is on the outside.
.
>>C<< SELF-LOCKING NUT INSTALLATION
Using a special tool, as when removing the nut, secure the
armature and tighten the self-locking nut.
.
AC507128AB
MB991386
MB991367
AC609150AB
Field core
projection
Compressor
unit pin hole
AC001412
Snap ring
Rotor
Clutch coil
Tapered part
AD
COMPRESSOR ASSEMBLY AND TENSION PULLEY
TSB Revision
HEATER, AIR CONDITIONING AND VENTILATION
55-134
>>D<< AIR GAP ADJUSTMENT
Check whether or not the air gap of the clutch is within the stan-
dard value.
Standard value:
0.3
− 0.5 mm (0.012 − 0.020 inch)
NOTE: If there is a deviation of the air gap from the standard
value, make the necessary adjustment by adjusting the number
of shims.
INSPECTION
M1552014303722
COOLING TEMPRATURE SWITCH
CAUTION
Do not heat more than necessary.
1. Dip the metal part of the cooling temperature switch into
engine oil and increase the oil temperature using a gas
burner or similar.
2. When the oil temperature reaches the standard value, check
that resistance is supplied between the terminals.
Standard value:
NOTE: When the oil temperature is 155
°
C (311
°
F) or more
and there is no continuity, the resistance will not be 2
Ω
or
lower until the oil temperature reduces to 125
°
C (257
°
F) or
less.
AC507127AC
Thickness
gauge
Item
Temperature
Less than 2 ohms
Slightly below 155
° C (311° F)
No continuity
155
° C (311° F) or more
AC100787
Thermometer
Engine oil
AG
AC100810
Less than 2
Ω
No continuity
125˚C
(257˚F)
155˚C
(311˚F)
OIL TEMPERATURE
AV
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