Mitsubishi Montero (2004+). Manual - part 1162

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-37

2. Bend a portion of the oil seal to remove it from the rack 

bushing.

.

<<G>> LOWER BEARING REMOVAL
Use a brass bar or special tool MB990939 to remove the ball 
bearing from the gear housing.

.

<<H>> NEEDLE BEARING REMOVAL

CAUTION

Do not open special tool MB991120 excessively to prevent 
damaging housing interior.
Use special tool MB991120 to remove the needle roller bearing 
from the rack housing.

.

ACX01148 AB

RACK BUSHING

ACX01149

MB990925
(MB990939)

LOWER
BEARING

AB

VALVE
HOUSING

ACX01150 AB

VALVE
HOUSING

MB991120

NEEDLE
ROLLER
BEARING

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-38

<<I>> OIL SEAL REMOVAL

CAUTION

Be careful not to damage the inner surface of the rack cyl-
inder of the gear housing.
Use a piece of pipe or similar tool to remove the oil seal from 
the gear housing.

ASSEMBLY SERVICE POINTS

.

>>A<< OIL SEAL INSTALLATION
1. Apply a coating of GENUINE MITSUBISHI POWER 

STEERING FLUID to the both sides of the oil seal.

2. Using special tools MB991199 and MB991197, press the oil 

seal into the rack housing.

.

>>B<< NEEDLE BEARING/LOWER BEARING 
INSTALLATION
1. Apply GENUINE MITSUBISHI POWER STEERING FLUID 

to housing, bearing and oil seal press fitting surface.

CAUTION

Press-fit straight. The valve housing is aluminum, and may 
become deformed if press-fit on an angle.
2. Press fit needle roller bearing with special tools MB990938 

and MB991202.

.

ACX01151

OIL SEAL

AB

GEAR HOUSING

PIPE OR
SIMILAR

ACX01152 AB

GEAR HOUSING

MB991199

OIL SEAL

MB991197

ACX01153

MB990925
(MB990938)

MB991202

LOWER
BEARING

MB990925
(MB990938)

AB

NEEDLE

ROLLER

BEARING

MB991202

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-39

>>C<< RACK ASSEMBLY INSTALLATION

CAUTION

Do not plug the vent hole in the rack with grease.
1. Apply a coating of multipurpose grease to the rack assembly 

teeth face.

2. Cover rack serrations with special tool MB991213.
3. Apply GENUINE MITSUBISHI POWER STEERING FLUID 

to special tool MB991213.

CAUTION

When inserting the rack, carefully push in while aligning 
the center of the oil seal and the tip of special tool 
MB991213 so that the oil seal retainer spring does not fall 
out.
4. Align the center of the oil seal with the rack to prevent the 

retainer spring from slipping. Slowly insert the rack from 
power cylinder side.

.

>>D<< OIL SEAL/RACK BUSHING INSTALLATION
1. Use special tool MB990927 to press fit oil seal until it 

touches rack bush end.

2. Apply a coating of GENUINE MITSUBISHI POWER 

STEERING FLUID to the outside of the oil seal and O-ring.

ACX01154 AB

SEAL RING, O-RING

VENT HOLE

ACX01155

MB991213

AB

OIL SEAL

ACX01156 AB

OIL SEAL

O-RING

RACK
BUSH

MB990925
(MB990927)

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-40

CAUTION

Do not allow oil seal retainer spring to slip out.
3. Wrap the rack end with vinyl tape, apply a coating of 

GENUINE MITSUBISHI POWER STEERING FLUID, and 
then install the rack bushing and rack stopper.

.

>>E<< CIRCLIP INSTALLATION

CAUTION

Insert the circlip to the rack stopper hole while turning the 
rack stopper clockwise.
Insert the circlip to the rack stopper hole through cylinder hole. 
Turn the rack stopper clockwise and insert the circlip firmly.

.

>>F<< UPPER OIL SEAL/UPPER BALL BEARING 
INSTALLATION
Apply a coating of GENUINE MITSUBISHI POWER STEER-
ING FLUID to the outside of the oil seal. Using special tools 
MB990938 and MB991203, press the oil seal into the valve 
housing.

.

ACX01157

RACK BUSH

AB

VINYL TAPE

RACK

ACX01158

CIRCLIP

SLOT

SLOT

AB

CIRCLIP

ACX01159AB

MB990925
(MB990938)

MB991203

MB991203

UPPER
OIL SEAL

BEARING

MB990925
(MB990938)