Mitsubishi Galant. Manual — part 550

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-31

<<E>> BALL BEARING/OIL SEAL REMOVAL
Using a socket, remove the oil seal and the ball bearing from
the valve housing simultaneously.

<<F>> CIRCLIP REMOVAL

CAUTION

If the rack stopper is first turned counterclockwise, the
circlip will get caught in the slot in the housing and the
rack stopper will not turn.
1. Turn the rack stopper clockwise until the end of the circlip

comes out of the slot in the rack housing.

2. Turn the rack stopper counterclockwise to remove the

circlip.

<<G>> RACK REMOVAL
Pull out the rack slowly. At this time also take out the rack
stopper and the rack bushing simultaneously.

<<H>> OIL SEAL REMOVAL

CAUTION

Do not damage oil seal press fitting surface.
Partially bend oil seal and remove from rack bushing.

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

ACX01145AC

SOCKET

ACX01146 AB

CIRCLIP

RACK
STOPPER

ACX01147 AB

ACX01148 AB

RACK BUSHING

ACX01149

MB990939 OR
BRASS BAR

LOWER
BEARING

AC

VALVE
HOUSING

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-32

<<J>> NEEDLE ROLLER 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.

<<K>> OIL SEAL REMOVAL

CAUTION

Be careful not to damage the inner surface of the rack
cylinder 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 the 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 ROLLER BEARING/BALL
BEARINGINSTALLATION

CAUTION

Press-fit straight. Valve housing is aluminum, and may
become deformed if Press-fit on an angle.
1. Apply MITSUBISHI POWER STEERING FLUID to housing,

bearing and oil seal press fitting surface.

2. Press fit needle roller bearing with special tools MB990938

and MB991202.

ACX01150 AB

VALVE
HOUSING

MB991120

NEEDLE
ROLLER
BEARING

AC001004

OIL SEAL

AB

PIPE OR SIMILAR TOOL

GEAR HOUSING

AC001005

MB991197

AB

OIL SEAL

MB991199

ACX01153

NEEDLE
ROLLER BEARING

MB990938

MB991202

MB991202

BALL
BEARING

AC

MB990938

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-33

>>C<< OIL SEAL/O-RING INSTALLATION
1. Apply a coating of the MITSUBISHI POWER STEERING

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

2. Use special tool MB990927 to press fit oil seal until it

touches rack bush end.

>>D<< RACK INSTALLATION

CAUTION

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

face.

2. Cover rack serrations with special tool MB991213.

3. Apply MITSUBISHI POWER STEERING FLUID to special

tool MB991213.

4. Align center of oil seal with rack to prevent retainer spring

from slipping. Slowly insert rack from power cylinder side.

>>E<< RACK BUSHING INSTALLATION

CAUTION

Do not allow oil seal retainer spring to slip out.
Wrap the rack end with vinyl tape, apply a coating of the
MITSUBISHI POWER STEERING FLUID, and then install the
rack bushing and rack stopper.

>>F<< CIRCLIP INSTALLATION

CAUTION

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

ACX01156AC

OIL SEAL

O-RING

MB990927

RACK
BUSH

ACX01154 AB

SEAL RING, O-RING

VENT HOLE

ACX01155

MB991213

AB

OIL SEAL

ACX01157

RACK BUSH

AB

VINYL TAPE

RACK

ACX01158

CIRCLIP

SLOT

SLOT

AB

CIRCLIP

POWER STEERING GEAR BOX ASSEMBLY

TSB Revision

POWER STEERING

37A-34

>>G<< OIL SEAL/BALL BEARING INSTALLATION
Apply a coating of the MITSUBISHI POWER STEERING
FLUID to the outside of the oil seal/ball bearing. Using special
tools MB990938 and MB991203, press the oil seal/ball bearing
into the valve housing.

>>H<< SEAL RING INSTALLATION
Because the seal rings expand after installation, tighten after
installing by using special tool MB991317 to compress the
rings, or press down by hand.

>>I<< OIL SEAL INSTALLATION

CAUTION

To eliminate a seal malfunction at the valve housing
alignment surface, the upper surface of the oil seal should
project outward approximately 1 mm (0.04 inch) from the
housing edge surface.
Using special tool MB991152, press the oil seal into the valve
housing.

>>J<< END PLUG INSTALLATION

1. Apply the 3M

TM

AAD Part number 8661, 8663, 8672, 8678,

8679 or equivalent to the threaded part of the end plug.

2. Secure the threaded portion of the end plug at two places by

using a punch.

>>K<< RACK SUPPORT COVER/JAM NUT INSTALLATION
1. Position rack at its center.

2. Apply the 3M

TM

AAD Part number 8661, 8663, 8672, 8678,

8679 or equivalent to the threaded part of the ruck support
cover.

ACX01159AC

MB990938

MB991203

OIL SEAL

MB991203

BEARING

MB990938

ACX01160 AB

MB991317

ACX01161

HOUSING

AB

OIL
SEAL

APPROXIMATELY
1 mm(0.04 in)

MB991152

ACX01162 AB

END PLUG

END PLUG