Mitsubishi Grandis. Manual - part 333

REAR BLOWER MOTOR AND REAR POWER TRANSISTOR

HEATER, AIR CONDITIONER AND VENTILATION

55-217

REAR BLOWER MOTOR AND REAR POWER TRANSISTOR

REMOVAL AND INSTALLATION

M1554015500027

INSPECTION

M1554011900045

REAR BLOWER MOTOR INSPECTION 
<VEHICLES WITH REAR HEATER, REAR 
COOLER OR DUAL AUTOMATIC A/C>

Pre-removal and Post-installation Operation
• Third seat assembly Removal and Installation (Refer to 

GROUP 52A, Third Seat Assembly 

P.52A-33

.)

• Quarter trim lower, quarter trim upper Removal and 

Installation (Refer to GROUP 52A, Interior Trim 

P.52A-10

.)

AC302929

1

2

AC

Rear power transistor removal 
step

1.

Rear power transistor <Vehicles 
with rear heater, rear cooler or dual 
automatic A/C>
Rear blower motor removal 
steps

•

Rear floor duct A <Vehicles with 
rear heater or rear A/C> (Refer to 

P.55-228

.)

2.

Rear blower motor <Vehicles with 
rear heater, rear cooler or dual 
automatic A/C>

AC303108

2

1

COMPRESSOR ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55-218

Check that the motor turns when applying battery 
power between the connector terminals. Also check 
to see that there is no abnormal sound emitted from 
the motor at this time.

COMPRESSOR ASSEMBLY

REMOVAL AND INSTALLATION

M1552004400183

Pre-removal Operation
• Refrigerant Discharging (Refer to 

P.52A-10

.)

• Front Under Cover Panel Assembly

Post-installation Operation
• Refrigerant Charging (Refer to 

P.52A-33

.)

• Drive Belt Tension Adjustment (Refer to GROUP 11A, 

On-vehicles Service 

− Drive Belt Tension Check 

P.11A-7

.)

• Front Under Cover Panel Assembly

AC303224

3

6

5

3

2

1

4

AB

3

N

N

24 ± 4 N·m

24 ± 4 N·m

1, 2

A/C compressor oil:
  SUN PAG 56

-Pipe coupling

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 assembly

6.

A/C compressor bracket

Removal steps (Continued)

COMPRESSOR ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55-219

REMOVAL SERVICE POINTS
<<A>> FLEXIBLE SUCTION HOSE AND 
FLEXIBLE DISCHARGE HOSE 
DISCONNECTION

CAUTION

Use the plug which is not breathable because 
A/C compressor oil or receiver have high 
hygroscopicity.
Plug the hose nipple removed to prevent the entry of 
dust and dirt.

<<B>> DRIVE BELT REMOVAL

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

1. Securely insert the spindle handle or ratchet 

handle with a 12.7 mm insertion angle into the jig 
hole of the auto-tensioner. 

2. Rotate the auto-tensioner anti-clockwise and align 

hole A with hole B.

CAUTION

To reuse the drive belt, draw an arrow indicating 
the rotating direction (clockwise) on the back of 
the belt using chalk, etc.

3. Insert an L-shaped hexagon wrench, etc. into the 

hole to fix and then remove the drive belt.

<<C>> COMPRESSOR REMOVAL

Be careful not to spill the A/C compressor oil and 
remove the A/C compressor.

INSTALLATION SERVICE POINT
>>A<< A/C COMPRESSOR 
INSTALLATION

When installing the new A/C compressor, install the 
A/C compressor after adjusting the oil volume as 
follows.

1. Measure the oil of A/C compressor removed. (X 

cm

3

)

2. Drain the oil (Y cm

3

) given by the following 

expression from a new A/C compressor, and then 
install the A/C compressor.

160 cm

3

 - X cm

3

 = Y cm

3

 

NOTE: 

.

1. 160 cm

3

 shows the oil volume contained in 

the new A/C compressor.

2. Y cm

3

 shows the oil volume stored in the 

refrigerant line, condenser, and cooling unit, 
etc.

INSPECTION

M1552004500209

CHECK THE MAGNETIC CLUTCH FOR 
A/C COMPRESSOR

Connect the connector battery to positive battery 
terminal in the A/C compressor, and then earth the 
battery (

−) terminal to the A/C compressor itself. At 

this time, check that the magnetic clutch operating 
sound can be heard.

AC301703

AC301704AB

Hole A

Auto-tensioner

Hole B

AC301705AB

L-shaped
hexagon
wrench

Auto-tensioner

AC302964

COMPRESSOR ASSEMBLY

HEATER, AIR CONDITIONER AND VENTILATION

55-220

DISASSEMBLY AND REASSEMBLY

M1552004600530

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

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

• Special spanner (MB991367)

• Pin (MB991386)

AC302963

3

10

4

5

6

7

8

9

1

2

AB

16 ± 1 N·m

N

Cooling temperature switch 
disassembly steps

1.

Snap ring

2.

Refrigerant temperature switch
Magnetic clutch disassembly

>>D<<

•

Air gap adjustment

<<A>>

>>C<<

3.

Self-locking nut

4.

Armature

>>B<<

5.

Snap ring

6.

Rotor

7.

Snap ring

>>A<<

8.

A/C compressor coil

9.

Shim

10. A/C compressor

AC208431AB

MB991386

MB991367