Mitsubishi Outlander (2003+). Manual — part 297

ON-VEHICLE SERVICE

POWER STEERING

37A-11

STEERING WHEEL RETURN TO CENTRE
CHECK

M1372001800384

Conduct a road test:
1. Make both gradual and sudden turns and check

the steering wheel return.

2. At a vehicle speed of approximately 35 km/h, turn

the steering wheel 90

°

, hold a few seconds, then

release. If the steering wheel then returns 70

°

or

more, the return can be judged satisfactory.
NOTE: There will be a momentary feeling or
"heaviness" when the wheel is turned quickly, but
this is not abnormal (Oil pump discharge amount
is especially apt to be insufficient during idling).

DRIVE BELT TENSION CHECK

M1372001900336

Refer to GROUP 11A, On-vehicle Service

−

Drive

Belt Tension Check <2000>

P.11A-8

.

Refer to GROUP 11C, On-vehicle Service

−

Drive

Belt Tension Check <2400>

P.11C-8

.

FLUID LEVEL CHECK

M1372002000358

1. Park the vehicle on a flat, level surface.
2. Start the engine, and then turn the steering wheel

several times to raise the temperature of the fluid
to approximately 50

−

60

°

C.

3. With the engine running, turn the wheel all the

way to the left and right several times.

4. Check the fluid in the oil reservoir for foaming or

milkiness. Check the difference of the fluid level
when the engine is stopped, and while it is
running. If the change of the fluid level is 5 mm or
more, air bleeding should be done.

FLUID REPLACEMENT

M1372002100418

1. Raise and support the front wheels.

2. Disconnect the return hose connection, and then

connect a vinyl hose to the return hose, and drain
the fluid into a container.

3. Disconnect the ignition coil connectors (Refer to

GROUP 16, Ignition Coil

P.16-40

<2000>,

P.16-41

<2400>).

4. While operating the starter motor intermittently,

turn the steering wheel all the way to the left and
right several times to drain all of the fluid.

5. Connect the return hose securely, and then

secure with the clip.

6. Fill the oil reservoir with specified fluid up to the

lower position of the filler, and then bleed the air.

Specified fluid: ATF DEXRON III or DEXRON
II

ACX01130AB

70˚

70˚

ACX01131

While engine running

While engine stopped

AC

Fluid level change: Within 5 mm

AC309079AC

Return hose

Vinyl hose

Return hose

<2000>

<2400>

Return hose

ON-VEHICLE SERVICE

POWER STEERING

37A-12

POWER STEERING SYSTEM AIR
BLEEDING

M1372002200404

Perform air bleeding procedure as necessary after
replacing the steering gear or the steering fluid lines.
1. Raise and support the front wheels.
2. Disconnect the ignition coil connectors (Refer to

GROUP 16, Ignition Coil

P.16-40

<2000>,

P.16-41

<2400>).

CAUTION

Perform air bleeding only while cranking the
engine. If air bleeding is performed while the
engine is running, air could enter the fluid.
During air bleeding, refill the steering fluid
supply so that the level never falls below the
"MIN" mark on the oil reservoir.
3. Turn the steering wheel all the way to the left and

right five or six times while using the starter motor
to crank the engine intermittently several times
(for 15 to 20 seconds).

4. Connect the ignition coil connectors (Refer to

GROUP 16, Ignition Coil

P.16-40

<2000>,

P.16-41

<2400>).

5. Start the engine (idling).
6. Turn the steering wheel to the left and right until

there are no air bubbles in the oil reservoir.

7. Confirm that the fluid is not milky, and that the

level is between "MAX" and "MIN" marks.

8. Confirm that there is very little change in the fluid

level when the steering wheel is turned left and
right.

CAUTION

If the fluid level rises suddenly after the engine is
stopped, the air has not been completely bled. If
air bleeding is not complete, there will be
abnormal noises from the pump and the
flow-control valve, and this condition could
cause reduce the life of the power steering
components.

9. Confirm that the change in the fluid level is no

more than 5 mm when the engine is stopped and
when it is running.

10.If the change of the fluid level is 5 mm or more,

the air has not been completely bled from the
system. The air bleeding procedure must be
repeated.

ACX01131

While engine running

While engine stopped

AC

Fluid level change: Within 5 mm

ON-VEHICLE SERVICE

POWER STEERING

37A-13

OIL PUMP PRESSURE TEST

M1372002300382

1. Disconnect the pressure hose from the oil pump,

and then connect the following special tools.

•

MB990662: Power Steering Oil Pressure Gauge

•

MB991548: Power Steering Oil Pressure Gauge
Adapter (Pump Side)

•

MB991549: Power Steering Oil Pressure Gauge
Adapter (Hose Side)

2. Bleed air, then turn the steering wheel several

times while the vehicle is not moving so that the
temperature of the fluid rises to approximately 50

−

60

°

C.

3. Start the engine and idle it at 750

±

100 r/min.

CAUTION

The pressure gauge shut-off valve must not
remain closed for more than 10 seconds.
4. Fully close the shut-off valve of the pressure

gauge and measure the oil pump relief pressure
to confirm that it is within the standard value
range. Open it again immediately after checking
the pressure.

Standard value: 8.8

−

9.5 MPa

5. If it is not within the standard value, replace the oil

pump.

6. Check whether or not the hydraulic pressure is

the standard value when no-load conditions are
created by fully opening the shut-off valve of the
pressure gauge.

Standard value: 0.8

−

1.0 MPa

7. If it is not within the standard value, the probable

cause is a malfunction of the oil line or steering
gear, so check these parts and repair as
necessary.

8. Turn the steering wheel all the way to the left or

right; then check whether or not the retention
hydraulic pressure is the standard value.

Standard value: 8.8

−

9.5 MPa

9. If not the standard value, overhaul the steering

gear. Remeasure fluid pressure.

10. Remove the special tools, and then tighten the

pressure hose to the specified torque.

Tightening torque: 57

±

7 N

⋅

m

11. Bleed the system (Refer to

P.37A-12

).

ACX01133

Temperature
gauge

Oil reservoir

Adapter
(MB991548)

Oil
pump

Adapter
(MB991549)

AB

Shut-off valve
(fully closed)

Pressure
gauge
(MB990662)

ON-VEHICLE SERVICE

POWER STEERING

37A-14

POWER STEERING PRESSURE SWITCH
CHECK

M1372007200391

1. Disconnect the pressure hose from the oil pump,

and then connect the following special tools.

•

MB990662: Power Steering Oil Pressure Gauge

•

MB991548: Power Steering Oil Pressure Gauge
Adapter (Pump Side)

•

MB991549: Power Steering Oil Pressure Gauge
Adapter (Hose Side)

2. Bleed air, and then turn the steering wheel several

times while the vehicle is not moving so that the
temperature of the fluid rises to approximately 50

−

60

°

C.

3. The engine should be idling.
4. Disconnect the connector for the oil pressure

switch, and place an ohmmeter at the switch.

5. Gradually close the shut-off valve of the pressure

gauge and increase the hydraulic pressure, then
check whether or not the hydraulic pressure that
activates the switch is the standard value.

Standard value: 1.5

−

2.0 MPa

6. Gradually open the shut-off valve and reduce the

hydraulic pressure; then check whether or not the
hydraulic pressure that deactivates the switch is
the standard value.

Standard value: 0.7

−

2.0 MPa

7. Remove the special tools, and then tighten the

pressure hose to the specified torque.

Tightening torque: 57

±

7 N

⋅

m

8. Bleed the system (Refer to

P.37A-12

).

TIE ROD END BALL JOINT DUST COVER
CHECK

M1372008600336

1. Press the dust cover with your finger to check

whether the dust cover is cracked or damaged.

2. If the dust cover is cracked or damaged, replace

the tie rod end.
NOTE: If the dust cover is cracked or damaged,
the ball joint could be damaged.

ACX01134 AB

Temperature
gauge

Adapter
(MB991548)

Oil reservoir

Oil
pump

Adapter
(MB991549)

Shut-off valve

Pressure gauge
(MB990662)