37A-1

STEERING




CONTENTS 37109000061
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . 2 Checking Steering Wheel Return to Centre . . . . 10
Drive Belt Tension Check . . . . . . . . . . . . . . . . . . . . 10
Fluid Level Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Fluid Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Bleeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Oil Pump Pressure Test . . . . . . . . . . . . . . . . . . . . . 13
Power Steering Oil Pressure Switch Check . . . . 14
Ball Joint Dust Cover Check . . . . . . . . . . . . . . . . . 14
SERVICE SPECIFICATIONS . . . . . . . . . . . . . . . . . 3
LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SEALANTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ON-VEHICLE SERVICE . . . . . . . . . . . . . . . . . . . . . 7
Steering Wheel Free Play Check . . . . . . . . . . . . . . 7
Steering Angle Check . . . . . . . . . . . . . . . . . . . . . . . . 7
Steering Gear Backlash Check . . . . . . . . . . . . . . . . 8
Tie Rod End Ball Joint Variation Check
(Shaft Direction) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Tie Rod End Ball Joint Starting Torque
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Stationary Steering Effort Check . . . . . . . . . . . . . . 9
STEERING WHEEL AND SHAFT* . . . . . . . . . 15
POWER STEERING GEAR BOX* . . . . . . . . . 18
POWER STEERING OIL PUMP . . . . . . . . . . . 26
POWER STEERING HOSES . . . . . . . . . . . . . . 34
STEERING LINKAGE . . . . . . . . . . . . . . . . . . . . . 38




WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES
WARNING!
(1) Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal
injury or death to service personnel (from inadvertent firing of the air bag) or to the driver and passenger (from rendering
the SRS inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized
MITSUBISHI dealer.
(3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B Supplemental
Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS-related
component.
NOTE
The SRS includes the following components: front impact sensors, SRS-ECU, SRS warning lamp, air bag module, clock spring and
interconnecting wiring. Other SRS-related components (that may have to be removed/installed in connection with SRS service or
maintenance) are indicated in the table of contents by an asterisk (*).



37A-2 STEERING General Information
GENERAL INFORMATION
Engine speed-responsive hydraulic power steering
has been used.
37100010056
The steering column in all vehicles has a shock
absorber mechanism and a tilt steering mechanism.
A vane-type oil pump with a fluid flow control system
has been included. The steering gear and linkage
The main features
wheel has four
are as follows. The steering
spokes. In addition, SRS
(Supplemental Restraint System) is
all vehicles.
equipped in is ball and nut type.
CONSTRUCTION DIAGRAM
Oil reservoir
Steering wheel
Oil pump
Steering column
Joint assembly
Tilt steering lever
Idler arm
Steering gear box
Pitman arm
Relay rod
Tie rod assembly
Items Specifications
Power steering gear box

Type Ball and nut type
Gear ratio 14.2 15.6
Oil pump

Type Vane type
Displacement mL/rev. 9.6
Relief set pressure MPa 8.3 9.0
37A-3 STEERING Service Specifications
SERVICE SPECIFICATIONS 37100030052
Items Standard value Limit
Steering wheel free play mm

With engine running 50
With engine stopped 10 or less
Steering angle

Inner wheel 2920' 3220'
Outer wheel 2930'
Steering gear backlash mm 0.5
Variation of tie rod end ball joint shaft direction mm 1.5
Tie rod end ball joint starting torque Nm 3.0
Engine idle speed r/min

6G7 700 100
4D5 750 100
Stationary steering effort N 39.2 or less
Oil pump
pressure MPa

Oil pump relief pressure 8.3 9.0
Pressure under no-load conditions 0.8 1.0
Steering gear retention hydraulic pressure 8.3 9.0
Oil pressure switch operating pressure MPa

OFF ON 1.5 2.0
ON OFF 0.7 1.2
Cross-shaft axial play mm 0.05 or less
Mainshaft total starting torque Nm 0.69 1.28
Backlash between ball groove of rack piston and balls mm 0.05
Pitman arm ball joint starting torque Nm 0.98 2.94
Idler arm sliding resistance N 2.4 16










37A-4 STEERING Lubricants/Sealants/Special Tools
LUBRICANTS 37100040024
SEALANTS 37100050034
SPECIAL TOOLS 37100060037
Tool Number Name Use

MB990948

Linkage joint
gauge

Ball joint variation check for shaft direction


MB991113 or
MB990635

Steering linkage
puller

Disconnection of ball joint


MB990685
MB991151

Torque wrench

Measurement of the ball joint starting
torque
Measurement of the pinion shaft preload
Measurement of the mainshaft starting
torgue


MB990326

Preload socket

Measurement of the ball joint starting torque


MB990993 or
MB991217

Power steering oil
pressure gauge
adapter (pump
side)

Measurement of oil pressure

Items Specified sealants Remarks
Cover assembly installation hole
Adjusting bolt, seal bolt, packing,
adjusting shim, dust cover lip for ball joint
3M ATD Part No.8663 or equivalent

Semi-drying sealant

Items Specified lubricants Quantity L
Power steering fluid

Automatic transmission fluid DEXRON or
DEXRON II
1.0

Cross-shaft, O-ring, oil seal, vane

Automatic transmission fluid DEXRON or
DEXRON II
As required

















37A-5 STEERING Special Tools
Tool Number Name Use

MB990994

Power steering oil
pressure gauge
adapter (hose
side)

Measurement of oil pressure


MB990662

Oil pressure gauge
assembly


MB990803

Steering wheel
puller

Disconnection of the steering wheel


MB990915

Pitman arm puller

Removal of the pitman arm


MB990925

Bearing and oil
seal installer set

Installation of the oil seal and bearing
(Refer to GROUP 26 Special Tools.)


MB991203

Oil seal & bearing
installer

To press in the valve housing oil seal


MB991006 or
MB990228

Preload socket

Measurement of the mainshaft total starting
torque


MB990776

Front axle base

Installation of dust cover for tie rod end ball joint











37A-6 STEERING Special Tools
Tool Number Name Use

MB990628

Snap ring pliers

To remove and install the snap ring of the pulley
assembly


MB990956

Needle bearing in-
staller

To press in the drive shaft assembly


MB991172

Adapter


MB990767

End york holder

Securing the drive pulley


MD998719 or
MD998754

Crankshaft pulley
holder pin







37A-7 STEERING On-Vehicle Service
ON-VEHICLE SERVICE
STEERING WHEEL FREE PLAY CHECK
37100090043
1. With engine running (hydraulic operation), set front wheels
straight ahead.
Measure the play on steering wheel circumference before
wheels start to move when slightly moving steering wheel
in both directions.
Limit: 50 mm
When play exceeds the limit, check for play on steering
shaft connection and steering linkage. Correct or replace.
If the free play still exceeds the limit value, set steering
wheel straight ahead with engine stopped. Load 5 N
towards steering wheel circumference and check play.
Standard value (steering wheel play with engine
stopped): 10 mm or less
If the play exceeds the standard value, check the steering
gear backlash and ball joint axial play.
2.
3.
4.
STEERING ANGLE CHECK 37100100029
1. Place the front wheel on a turning radius gauge and
measure the steering angle.
Standard value:
2. If the steering angle is outside the standard value after
checking the toe-in (refer to GROUP 33A On-vehicle
Service), adjust the steering angle with the stopper bolt.
Stopper bolt

78 Nm








Pitman arm


Stopper bolt

78 Nm







Idler arm

Items Specifications
Inside wheel 2940' 3240'
Outside wheel 2930'








37A-8 STEERING On-Vehicle Service
STEERING GEAR BACKLASH CHECK 37100120032
1. Jack up the vehicle front and hold the steering wheel
in the straight ahead position.
Apart the pitman arm and the relay rod. (Refer to
P.37A-41.)
Measure the steering gear backlash at the pitman arm
top end with a dial indicator.
Limit: 0.5 mm
2.
3.
4. If the measured value exceeds the limit, screw in the
steering gear box adjusting bolt until steering wheel free
play is within the standard value.
Caution
(1) Be sure to make the adjustment with the steering
wheel in the straight ahead position.
(2) If the adjusting bolt is overtightened, more
steering effort will be required, and return of the
wheel will be adversely affected.
TIE ROD END BALL JOINT VARIATION
CHECK (SHAFT DIRECTION) 37100130011
1.
2.
Hold the ball joint with the special tool.
Set the special tool scale at its highest and measure
variation with ball stud compressed. The variation should
locate between the highest and centre scales.
Limit: 1.5 mm
When the variation exceeds the centre scale, replace
the tie rod end.
Caution
Even if the variation is within the limit, check ball
joint starting torque.
3.


Highest
1.0 scale
Centre
scale
1.5
mm


MB990948









37A-9 STEERING On-Vehicle Service
TIE ROD END BALL JOINT STARTING
TORQUE CHECK 37100140021
1. Use the special tool to disconnect the ball joint.
Caution
(1) Only loosen tie rod end mounting nut; but do not
remove it from the ball joint.
(2) Support the special tool with a cord, etc. to prevent
it from coming off.
2. Move the ball joint stud several times and install the nut
on stud. Measure ball joint starting torque with special
tools.
Standard value: 3.0 Nm
When the starting torque exceeds the standard value,
replace the tie rod end.
When the starting torque is under the standard value,
check ball joint for end play or ratcheting. If none of these,
the ball joint is still serviceable.
Tighten the nut to the specified torque and install a new
split pin.
Tightening torque: 40 Nm
3.
4.
5.
STATIONARY STEERING EFFORT CHECK
37200170221
1. With the vehicle stopped on a flat and paved surface,
and turn the steering wheel to the straight ahead position.
Start the engine and check the engine idle speed.
Standard value:
2.
3. Attach a spring balance to the outer circumference of
the steering wheel and measure the steering force
required to turn the steering wheel from the straight ahead
position to the left and right (within a range of 1.5 turns).
Also check to be sure that there is no significant fluctuation
of the required steering force.
Standard value:
Steering effort: 39.2 N or less
Fluctuation allowance: 5 N or less
Engine idle speed r/min Remarks
700 100 6G7
750 100 4D5



MB990685
MB990326


Cord
Ball joint






Nut

MB990635 or

MB991113





37A-10 STEERING On-Vehicle Service
CHECKING STEERING WHEEL RETURN TO
CENTRE
Conduct a road test before this test.
1. Make both gradual and sudden turns and check the
steering feeling to be sure that there is no difference
in the steering force required and the wheel return between
left and right turns.
2. At a speed of 35 km/h, turn the steering wheel 90 and
release the steering wheel after 1 or 2 seconds. If the
steering wheel then returns 70 or more, the return can
be judged to the satisfactory.
NOTE
There will be a momentary feeling or heaviness when
the wheel is turned quickly, but this is not abnormal. (this
is because the oil pump discharge amount is especially
apt to be insufficient during idling.)
37200180170
DRIVE BELT TENSION CHECK
Refer to GROUP 11 On-vehicle Service.
37200190227
FLUID LEVEL CHECK 37200200142
1. Park the vehicle on a flat, level surface, start the engine,
and then turn the steering wheel several times to raise
the temperature of the fluid to approximately 5060C.
With the engine running, turn the wheel all the way to
the left and right several times.
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.
2.
3.

Fluid level change: Within 5 mm









While engine While engine
running stopped





70 70



37A-11 STEERING On-Vehicle Service
FLUID REPLACEMENT 37200210152
1. Raise the front wheels on a jack, and then support them
with rigid racks.
Disconnect the return hose connection.
Connect a vinyl hose to the return hose, and drain the
oil into a container.
On vehicles with a petrol engine, disconnect the
high-tension cable. On vehicles with a diesel engine,
remove the fuel cut valve connector attached to the
injection pump.
Caution
Be careful not to position the high-tension cable near
the delivery pipe.
While operating the starting motor intermittently, turn the
steering wheel all the way to the left and right several
times to drain all of the fluid.
Connect the return hoses securely, and then secure it
with the clip.
Fill the oil reservoir with the specified fluid up to the lower
position of the filter, and then bleed the air.
Specified fluid:
2.
3.
4.
5.
6.
7.
Automatic transmission
DEXRON II
fluid DEXRON or







Return hose Vinyl hose



37A-12 STEERING On-vehicle Service
BLEEDING 37200220209
1. Jack up the front wheels and support them by using a
rigid rack.
Manually turn the oil pump pulley a few times.
Turn the steering wheel all the way to the left and to
the right five or six times.
On vehicles with a petrol engine, disconnect the
high-tension cable. On vehicles with a diesel engine,
remove the fuel cut valve connector attached to the
injection pump.
Caution
Be careful not to place the high-tension cable near
the delivery pipe.
While operating the starting motor intermittently, turn the
steering wheel all the way to the left and right five or
six times (for 15 to 20 seconds).
Caution
(1) During air bleeding, refill the fluid so that the level
never falls below the lower position of the filter.
(2) If air bleeding is done while engine is running,
the air will be broken up and absorbed into the
fluid; be sure to do the bleeding only while
cranking.
On vehicles with a petrol engine, connect the high-tention
cable. On vehicles with a diesel engine, connect the fuel
cut valve connector attached to the injection pump. Start
the engine (idling).
Turn the steering wheel to the left and right until there
are no air bubbles in the oil reservoir.
Confirm that the fluid is not milky, and that the level is
up to the specified position on the level gauge.
Confirm that there is very little change in the fluid level
when the steering wheel is turned left and right.
2.
3.
4.
5.
6.
7.
8.
9.
10. Check whether or not the change in the fluid level is
within 5 mm when the engine is stopped and when it
is running.
11. If the change of the fluid level is 5 mm or more, the
air has not been completely bled from the system, and
thus must be bled completely.
Caution
(1) If the fluid level rises suddenly after the engine
is stopped, the air has not been completely bled.
(2) If air bleeding is not complete, there will be
abnormal noises from the pump and the
flow-control valve, and this condition could cause
a lessening of the life of the pump, etc.

Fluid level change: Within 5 mm









While engine While engine
running stopped


37A-13 STEERING On-vehicle Service
OIL PUMP PRESSURE TEST 37200230233
1. Disconnect the pressure hose from the oil pump, and
then connect the special tools.
Bleed the 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 5060C.
Start the engine and idle it at 1,000100 r/min.
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.
Standard value: 8.3 9.0 MPa
Caution
Pressure gauge shut off valve must not remain closed
for more than 10 seconds.
If it is not within the standard value, replace the oil pump.
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
If it is not within the standard value, the probable cause
is a malfunction of the oil line or steering gear box, so
check these parts and repair as necessary.
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: 8.3 9.0 MPa
When not within the standard value, overhaul the steering
gear box.
Remeasure fluid pressure.
(MB990662)
2.
3.
4.
5.
6.
7.
8.
9.
10. Remove the special tools, and then tighten the pressure
hose to the specified torque.
Tightening torque: 18 Nm
11. Bleed the system.

Pressure
Shut-off valve
gauge
(Fully close)

Temperature
gauge
Oil pump
relief
pressure
Adapter
(MB990993
or MB991217)


Pressure
hose

Oil
pump Adapter
(MB990994)
Reservoir



37A-14 STEERING On-vehicle Service
POWER STEERING OIL PRESSURE SWITCH
CHECK <Petrol-powered vehicle> 37200720211
(MB990993 or
(MB990662)
1. Disconnect the pressure hose from the oil pump, and
then connect the special tools.
Bleed the 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 5060C.
The engine should be idling.
Disconnect the connection of the connector for the oil
pressure switch, and place an ohmmeter in position.
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
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 1.2 MPa
Remove the special tools, and then tighten the pressure
hose to the specified torque.
Tightening torque: 18 Nm
Bleed the system
2.
3.
4.
5.
(MB990994)
6.
7.
8.
BALL JOINT DUST COVER CHECK 37200860098
1. Press the dust cover with a finger to check whether the
dust cover is cracked or damaged.
2. If the dust cover is cranked or damaged, replace the
pitman arm, idler arm or tie rod end ball joint.
NOTE
If the dust cover is cracked or damaged, the ball joint
could be damaged.
Pressure
Adapter
gauge


MB991217) Shut-off
Temperature valve
gauge










Oil
Adapter
pump

Reservoir



37A-15 STEERING Steering Wheel and Shaft
STEERING WHEEL AND SHAFT 37100170044
REMOVAL AND INSTALLATION
39 Nm
25 Nm
1
3
2
5
7
12 Nm
4.9 Nm
4
6
18 Nm
Removal steps
1. Air bag module (Refer to Group 52B
Air Bag Module and Clock Spring.)
2. Steering wheel
Driver under cover (Refer to
GROUP 52A Instrument Panel.)
3. Upper column cover assembly
4. Lower column cover assembly
}A] 5. Clock spring and column switch
6. Brake pedal return spring
7. Steering column assembly
]A}






7

Sealant: 3M ATD Part No.
8663 or equivalent

Post-installation Operation
Checking Steering Wheel Position with Wheels
Straight Ahead

Caution: SRS
Before removal of the air bag module, refer to GROUP 52B Service Precautions and Air Bag Module and
Clock Spring.
When removing and installing the steering wheel, do not let it bump against the air bag module.






37A-16 STEERING Steering Wheel and Shaft
REMOVAL SERVICE POINT
]A} STEERING WHEEL REMOVAL
Use special tool to remove the steering wheel.
Caution
Do not hammer on the steering wheel to remove it; doing
so may damage the collapsible mechanism.
INSTALLATION SERVICE POINT
}A] CLOCK SPRING AND COLUMN SWITCH
INSTALLATION
1. Align the mating mark of clock spring. (Refer to GROUP
52B Air Bag Modules and Clock Spring.)
2. Tighten the screws in the alphabetical order.
DISASSEMBLY AND REASSEMBLY 37100190040
1
2
3
8
7
5 6
18 Nm
4
Disassembly steps
}B] 1. Special bolt
5. Joint assembly
}A] 6. Upper boot
7. Packing
8. Column sub assembly
]A} }B] 2. Steering lock bracket
]A} }B] 3. Steering lock cylinder
}A] 4. Lower boot


C


B

A



MB990803







37A-17 STEERING Steering Wheel and Shaft
DISASSEMBLY SERVICE POINT
]A} STEERING LOCK BRACKET/STEERING LOCK
CYLINDER REMOVAL
If it is necessary to remove the steering lock cylinder, use
a hacksaw to cut the special bolts at the steering lock bracket
side.
REASSEMBLY SERVICE POINT
}A] UPPER BOOT/LOWER BOOT INSTALLATION
Assemble the upper and lower boots and the dust cover.
NOTE
Align the arrows on the upper and lower boots to the slit
on the yokes in order to assemble.
}B] STEERING LOCK CYLINDER/STEERING LOCK
BRACKET/SPECIAL BOLT INSTALLATION
1. When installing the steering lock cylinder and steering
lock bracket to the column tube, temporarily install the
steering lock in alignment with the column boss.
2. After checking that the lock works properly, tighten the
special bolts until the head twists off.
Caution
The steering lock bracket and bolts must be replaced
with new ones when the steering lock is installed.


Upper




Lower

Slit



Slit

Steering lock bracket









Steering lock cylinder



37A-18 STEERING Power Steering Gear Box
POWER STEERING GEAR BOX 37200390375
REMOVAL AND INSTALLATION
5

15 Nm
6
1
4
18 Nm
7
54 64 Nm
8
3
2
44 Nm
Removal steps
1. Connecting bolt for steering gear
box and steering shaft
2. Split pin
3. Connection for pitman arm and
relay rod
4. Pressure tube
5. Return tube
6. O-ring
7. Self-locking nut
8. Power steering gear box
]A}





3




Post-installation Operation
Power Steering Fluid Supplying (Refer to P.37A-11.)
Power Steering Fluid Line Bleeding (Refer to
P.37A-12.)
Checking Steering Wheel Position with Wheels
Straight Ahead
Front Wheel Alignment Adjustment (Refer to
GROUP 33A On-vehicle Service.)
Press the dust cover with a finger to check whether
the dust cover is cracked or damaged.

Pre-removal Operation
Power Steering Fluid Draining (Refer to P.37A-11.)

Caution: SRS
For vehicles with SRS, before removal of the steering gear box refer to GROUP 52B Supplemental
Restraint System (SRS), center the front wheels and remove the ignition key. Failure to do so may damage
the SRS clock spring and render the SRS system inoperative, risking serious driver injury.


37A-19 STEERING Power Steering Gear Box
REMOVAL SERVICE POINT
]A} PITMAN ARM AND RELAY ROD
DISCONNECTION
Use the special tool to disconnect the ball joint.
Caution
1. Using the special tool, loosen the tie rod end mounting
nut. Only loosen the nut; do not remove it from the
ball joint.
2. Support the special tool with a cord, etc. to prevent
it from coming off.
INSPECTION
PITMAN ARM DUST COVER CHECK
1. Press the dust cover with a finger to check whether the
dust cover is cracked or damaged.
2. If there are any cracks in or damage to the dust cover,
replace the pitman arm. (Refer to P.37A-20.)
NOTE
Cranked or damaged dust cover may cause damage to
the ball joint. In addition, if the dust cover is damaged
during service work, replace the dust cover. (Refer to
P.37A-25.)
37200400184

Cord
Ball joint

MB990635 or
MB991113



Nut



37A-20 STEERING Power Steering Gear Box
DISASSEMBLY 37200420029
3
4
5
6
7
9

8
10
14
11
13
2
12
1
Disassembly steps
1. Jam nut
2. Pitman arm
3. Bolts
4. Adjusting bolt locking nut
5. Side cover
6. O-ring
7. Y-packing
8. Adjusting bolt
9. Adjusting plate
10. Cross-shaft
11. Mainshaft and valve assembly
12. Oil seal
13. Y-packing
14. Gear box housing
]A}
]C}
]B}









37A-21 STEERING Power Steering Gear Box
DISASSEMBLY SERVICE POINTS
]A} PITMAN ARM REMOVAL
]B} SIDE COVER REMOVAL
1. Loosen the lock nut and then turn the adjusting bolt
anti-clockwise slightly.
2. Screw in the adjusting bolt without turning the side cover,
and then remove the side cover.
]C} CROSS-SHAFT REMOVAL
With the mainshaft and cross-shaft placed in the straight ahead
position, tap the bottom of the cross-shaft with a plastic
hammer to take out the cross-shaft together with the side
cover.










MB990915



37A-22 STEERING Power Steering Gear Box
REASSEMBLY 37200430060
5
8
50 Nm
15
14 38 Nm
12
8
7
9

10
13
4
11
50 Nm
1
6
5
2
16
3
17
127 147 Nm
Reassembly steps
1. Gear box housing
2. Y-packing
}A] 3. Oil seal
4. O-ring
5. Seal ring
6. Mainshaft and valve assembly
7. Y-packing
}C] 11. Cross-shaft
12. Side cover
13. Side cover and cross-shaft
assembly
14. Bolt
}D] Mainshaft total staring torque
adjustment
8. O-ring
}B] Cross-shaft axial play adjustment
9. Adjusting plate
10. Adjusting bolt
15. Adjusting bolt lock nut
}E] 16. Pitman arm
17. Jam nut

8
7
2
3


Cross-shaft
seal kit


9


Cross-shaft
plate set


4


7




2
3
Gear box seal kit




37A-23 STEERING Power Steering Gear Box
LUBRICATION AND SEALING POINTS
REASSEMBLY SERVICE POINTS
}A] OIL SEAL INSTALLATION
Apply a coating of the specified fluid to the outside of the
oil seal. Using the special tools, press the oil seal into the
valve housing.
Specified fluid:
Automatic transmission
DEXRON II
fluid DEXRON or


Oil seal

MB990938

MB990926


Sealant:
3M ATD Part No.8661 or equivalent



Automatic
transmission
fluid DEXRON
or DEXRON II


Automatic transmission fluid
DEXRON or DEXRON II






37A-24 STEERING Power Steering Gear Box
}B] CROSS-SHAFT AXIAL PLAY ADJUSTMENT
Adjusting
1. Install the adjusting plate so that the beveled part is facing
downward.
Using a thickness gauge, measure the clearance between
the adjusting bolt and cross-shaft.
Standard value: 0.05 mm or less
If the clearance exceeds the standard value, replace with
a suitable adjusting plate.
2.
3.
}C] CROSS-SHAFT INSTALLATION
Set the rack piston in the neutral position and install the
cross-shaft.
Caution
Do not rotate the side cover during installation. Take care
not to damage the cross-shaft oil seal.
}D] MAINSHAFT TOTAL STARTING TORQUE
ADJUSTMENT
1. While turning the adjusting bolt, measure the mainshaft
total starting torque by using the special tools.
Standard value: 0.69 1.28 Nm
Caution
Adjust by turning adjusting bolt so that the starting
torque at the centre position of the rack piston is
approximately 0.2 Nm higher than the values at the
both ends of the rack piston.
2. Tighten the adjusting bolt lock nut to the specified torque.
}E] PITMAN ARM INSTALLATION
Install the pitman arm to the gear box with the mating marks
aligned.
Mating marks


MB991006 or
MB990228








MB990685


b


olt


Adjusting

plate







37A-25 STEERING Power Steering Gear Box
INSPECTION 37200440155
BACKLASH BETWEEN BALL GROOVE OF RACK
PISTON AND BALLS
Set the rack piston to the position shown in the figure, and
then measure the backlash by using a dial gauge.
Limit: 0.05 mm
PITMAN ARM BALL JOINT STARTING TORQUE
After shaking the ball joint stud several times, install the nut
to the stud and use the special tool to measure the starting
torque of the ball joint.
Standard value: 0.98 2.94 Nm
DUST COVER REPLACEMENT
Only when the dust cover is damaged accidentally during
service work, replace the dust cover only as follows:
1.
2.
Fill inside the dust cover with multipurpose grease.
Apply specified sealant to the mounting surface of the
dust cover at the pitman arm.
Specified sealant:
3M ATD Part No.8661 or equivalent
Using the special tool, install the dust cover to the pitman
arm.
3.












MB990776


MB990685






MB990326











134 mm





37A-26 STEERING Power Steering Oil Pump
POWER STEERING OIL PUMP 37200520422
REMOVAL AND INSTALLATION
<6G7> <4D5>
20 Nm
20 Nm
4
4
5
3
5
3 2
7
7
6
2
22 Nm
44 Nm
22 Nm
24 Nm
24 Nm
1
22 Nm
8
8
44 Nm
4.9 Nm
Removal steps
1. Pulley cover <6G7>
2. Drive belt
3. Suction hose
4. Pressure tube
5. O-ring
6. Pressure switch connector <6G7>
7. Oil pump
8. Oil pump bracket }A]
INSTALLATION
}A] PRESSURE
SERVICE POINT
HOSE INSTALLATION
Connect the pressure hose so that the notched part contacts
the suction connector.
INSPECTION
Check the drive belt for cracks.
Check the pulley assembly for uneven rotation.
37200530067
Suction
connector
Notch





Post-installation Operation
Power Steering Fluid Supplying (Refer to P.37A-11.)
Drive Belt Tension Check (Refer to P.37A-10.)
Power Steering Fluid Line Bleeding (Refer to
P.37A-12.)
Oil Pump Pressure Check (Refer to P.37A-13.)

Pre-removal Operation
Power Steering Fluid Draining (Refer to P.37A-11.)


37A-27 STEERING Power Steering Oil Pump
DISASSEMBLY AND REASSEMBLY <6G7>

Caution
37200540299
Do not disassemble the flow control valve.
6
11
22 25 Nm
1
2
59 Nm
5
4

6
10
3
8
11

12
9
13
27
7
9.8 Nm
26
14
25
28 16
17
18 24
22
20

15
19
21
22
18 Nm
23

Disassembly steps
1. Pump cover
2. O-ring
3. Vanes
4. Cam ring
5. Snap ring
6. Rotor
7. Pulley assembly
8. Side plate
9. O-ring
}C] 16. Spring
17. Plunger
18. Piston rod
19. Snap ring
20. Terminal
21. Washer
22. Insulator
}B] 23. O-ring
24. Plug
}H]
}G]
]A} }F]
}E]

}D]
}B]
10. Connector 25. Suction connector
}B] 11. O-ring }B] 26. O-ring
12. Flow control valve
13. Flow control spring
}A] 27. Oil seal
28. Oil pump body
14. Terminal assembly
}B] 15. O-ring











5
7


Pulley and shaft kit
5
2
9


11




26
27
23
15



5

3




4

Oil pump seal kit Oil pump cartridge kit

Fluid:
Automatic transmission fluid
DEXRON or DEXRON II










Suction connector
mounting portion of oil
pump body








37A-28 STEERING Power Steering Oil Pump
DISASSEMBLY SERVICE POINT
]A} SNAP RING REMOVAL
REASSEMBLY SERVICE POINTS
}A] OIL SEAL INSTALLATION
Use special tool to install the oil seal.
}B] O-RINGS INSTALLATION
assembly
}C] SPRING INSTALLATION
Fit the spring to the oil pump body with the larger-diameter
end at the terminal assembly side.

No. I.D. X Width mm
1 11 1.9
2 13 1.9
3 17.8 2.4
4 13.5 1.5
5 3.8 1.9
6 16.8 2.4

Side plate

1


2
6
3

4




2




3

Connector













Terminal

5


MB990938

MB9909
3
2
8
6










MB990628











37A-29 STEERING Power Steering Oil Pump
}D] SIDE PLATE INSTALLATION
Line up the dowel pin hole of the side plate with the dowel
pin of the pump body when installing the side plate.
}E] ROTOR INSTALLATION
Install the rotor to the pulley assembly so
punch mark is at the pump cover side.
that the rotor's
}F] SNAP RING INSTALLATION
After installation of the snap ring, lift the rotor and check
that the snap ring has entered the countersunk part.
}G] CAM RING INSTALLATION
Install the cam ring with the punch mark facing the side plate.


Punch mark




Snap ring










MB990628





Dowel pin hole
Dowel pin



37A-30 STEERING Power Steering Oil Pump
}H] VANES INSTALLATION
Install the vanes on the rotor, paying close attention to the
installation direction.
Rotor
Vane
INSPECTION 37200550087




Check
Check
Check
Check
the
the
the
the
flow control valve for clogging.
pulley assembly for wear or damage.
rotor and vane groove for stepped wear.
contact surface of cam ring and vanes for
stepped wear.
Check the vanes for damage.
Direct round edge
to the cam ring







Cam ring



37A-31 STEERING Power Steering Oil Pump
DISASSEMBLY AND REASSEMBLY <4D5>

Caution
37200540305
Do not disassemble the flow control valve.
12
69 78 Nm
3
18 Nm
4 11
12
5
7
6
8
9
13

14
10
18
17
2 15
1
61 Nm
16
19
16 Nm
Disassembly steps
]A} }G] 1. Drive pulley
2. Snap ring
3. Pump cover
4. Lock pin
5. Seal washer
11. Connector
}C] 12. O-ring
13. Flow control valve
14. Flow control spring
15. Suction connector
}C] 16. O-ring
}B] 17. Drive shaft assembly
}A] 18. Oil seal
19. Oil pump body
}F] 6. Vanes
}E] 7. Cam ring
}D] 8. Rotor
9. Side plate
}C] 10. O-ring




5
12






16 10
18




6



7
8
Oil pump seal kit Oil pump cartridge kit

Fluid:
Automatic transmission fluid
DEXRON or DEXRON II








37A-32 STEERING Power Steering Oil Pump
DISASSEMBLY SERVICE POINT
]A} DRIVE PULLEY REMOVAL
MD998754
REASSEMBLY SERVICE POINTS
}A] OIL SEAL INSTALLATION
}B] DRIVE SHAFT ASSEMBLY INSTALLATION
MB991172
}C] O-RINGS INSTALLATION
Suction connector
No. I.D. x Width mm
1 11 1.9
2 13 1.9
3 15.5 2.4
4 14.6 2.4
5 19.4 1.9
Connector Side plate

1

2
4

3
mounting portion
of oil pump body









5



MB990956
Drive shaft
assembly


MB990938


MB991203


MB990767


MD998719 or











37A-33 STEERING Power Steering Oil Pump
}D] ROTOR INSTALLATION
Install the rotor to the pulley assembly so that the rotor's
punch mark is at the pump cover side.
}E] CAM RING INSTALLATION
Install the cam ring with the punch mark facing the side plate.
}F] VANE INSTALLATION
Install the vanes on the rotor, paying close attention to the
installation direction.
ound edge
m ring
Cam ring
}G] DRIVE PULLEY INSTALLATION
INSPECTION 37200550087




Check the flow control valve for clogging.
Check the pulley assembly for wear or damage.
Check the groove of rotor and vane for stepped wear.
Check the contact surface of cam ring and vanes for
stepped wear.
Check the vanes for damage.

MB990767



MD998719 or
MD998754

Direct r
to the ca







Rotor



Vane




Punch mark




37A-34 STEERING Power Steering Hoses
POWER STEERING HOSES
REMOVAL AND INSTALLATION
37200570403
<6G7>
11 Nm
3
20 Nm
2
1
8
5
7
34 Nm
6
11 Nm
4 <L.H.>
11 Nm <R.H.>
11
13
15 Nm
12
15 Nm
18
14
16
15 Nm
34 Nm
10
15
17 9
11 Nm
Removal steps
}E] 1. Suction hose
}E] 2. Return hose
3. Oil reservoir
}D] 4. Return hose
10. Return hose
11. Return tube
12. O-ring
}A] 13. Pressure tube
5. Return tube
}C] 6. Pressure hose

8. O-ring
14. O-ring
}B] 15. Return tube
}C] 7. Pressure tube 16. O-ring
}A] 17. Pressure tube
18. O-ring }B] 9. Return tube



Post-installation Operation
Radiator Grille Installation
Power Steering Fluid Supplying (Refer to P.37A-11.)
Power Steering Fluid Line Bleeding (Refer to
P.37A-12.)

Pre-removal Installation
Power Steering Fluid Draining (Refer to P.37A-11.)
Radiator Grille Removal


37A-35 STEERING Power Steering Hoses
<4D5>
3
11 Nm
2
1

4
20 Nm
6
8
7
9
5 Nm
5
<L.H.>
<R.H.>
12
13
14
15 Nm
15 Nm
15
19
15 Nm
15 Nm
18 34 Nm
17
11
11 Nm
16
10
Removal steps
}E] 1. Suction hose
}E] 2. Return hose
3. Oil reservoir
}E] 4. Suction hose
}D] 5. Return hose
6. Suction tube
7. Return tube
}C] 8. Pressure tube
9. O-ring
}B] 10. Return tube
11. Return hose
12. Return tube
13. O-ring
}A] 14. Pressure tube
15. O-ring
}B] 16. Return tube
17. O-ring
}A] 18. Pressure tube
19. O-ring














37A-36 STEERING Power Steering Hoses
INSTALLATION SERVICE POINTS
}A] PRESSURE TUBE INSTALLATION
1. Connect the pressure tube so that the marking is
positioned as shown in the illustration.
2. Align the pressure tube and pressure hose alignment
marks and install.
}B] RETURN TUBE INSTALLATION
Connect the return tube so that
as shown in the illustration.
the marking is positioned
}C] PRESSURE TUBE/PRESSURE
TUBE INSTALLATION
1. Connect the pressure tube so that the its notched part
contacts the suction connector.
HOSE/PRESSURE
2. Align the mating marks on the pressure hose and pressure
tube, and install the pressure hose.






Mating marks


Suction
connector Notch









Return tube

<L.H.>

<R.H.>



Mating marks






Return tube




Mating Pressure hose
marks
Pressure tube
Clip







37A-37 STEERING Power Steering Hoses
}D] RETURN HOSE INSTALLATION
Install the return hose so that the marking faces towards
front of the vehicle.
}E] RETURN HOSE/SUCTION HOSE INSTALLATION
Connect the return hose and suction hose so that the marking
is positioned as shown in the illustration.
<4D5>




Suction hose


<6G7>






Suction hose


Return
hose



37A-38 STEERING Steering Linkage
STEERING LINKAGE 37100300078
REMOVAL AND INSTALLATION
59 Nm
1
44 54 Nm
4
93 Nm
2
1
5
3
2
44 54 Nm
1
44 54 Nm
1
93 Nm 44 54 Nm
1
1
Removal steps
1. Cotter pin
2. Tie rod assembly
3. Relay rod
4. Self-locking nut
5. Idler arm assembly ]A} }A]
]A}
]A}





5








2

Sealant: 3M ATD Part No. 8663 or equivalent

Post-installation Operation
Checking Steering Wheel Position with the Wheels
Straight Ahead
Front Wheel Alignment (Refer to GROUP 33A
On-vehicle Service.)
Press the dust cover with a finger to check whether
the dust cover is craked or damaged.




37A-39 STEERING Steering Linkage
REMOVAL SERVICE POINT
]A} TIE ROD ASSEMBLY/RELAY ROD/IDLER ARM
ASSEMBLY REMOVAL
Use special tool to disconnect the ball joint.
Caution
1. Support special tool with a cord, etc. to prevent it
from coming off.
2. Only loosen mounting nut, do not remove it from the
ball joint.
INSTALLATION SERVICE POINT
}A] TIE ROD ASSEMBLY INSTALLATION
1. Install the tie rod assembly so that the dimension is as
shown in the illustration.
Caution
The outer end of the tie rod end has a left thread.

NOTE
The illustration at left shows the left side tie rod assembly.
The right side tie rod assembly is symmetrical to the
left side assembly.
2. Adjust the pipe so that the difference between dimensions
(a) and (b) is 1.5 mm or less, and then temporarily tighten
the lock nut.

NOTE
Fully tighten the lock nut after the tie rod assembly is
installed to the body and the toe-in has been adjusted.
Tie rod end, outer
Tie rod end,

a b
inner


A

Pipe

315 mm




View A


9397



Front


Cord
Ball joint






Nut

MB991113 or

MB990635



37A-40 STEERING Steering Linkage
INSPECTION
Check the rubber parts for cracks and break.
DUST COVER CHECK
37100310040
1. Press the dust cover with a finger to check whether the
dust cover is craked or damaged.
If there are any cracks in or damage to the dust cover,
replace the tie rod end assembly or idler arm. (Refer
to P.37A-38.)
NOTE
Cracked or damaged dust cover may cause damage to
the ball joint. In addition, if the dust cover is damaged
2.
during service
P.37A-41.)
work, replace the dust cover. (Refer to
DISASSEMBLY AND REASSEMBLY 37100340063
Idler arm Tie rod assembly
3
2
4
3
1
93 Nm
137 Nm
Idler arm disassembly steps
1. Idler arm
2. Idler arm support
Tie rod disassembly steps
}A] 3. Tie rod end assembly
4. Pipe








3


Sealant:
3M ATD Part No. 8663 or
equivalent






37A-41 STEERING Steering Linkage
REASSEMBLY SERVICE POINT
}A] TIE ROD END ASSEMBLY INSTALLATION
1. Apply multipurpose grease to the threaded section of
the tie rod end.
2. Screw in the right and left tie rod ends to the pipe by
the same amount, and then and provisionally tighten the
tie rod end fixing nut.
INSPECTION
IDLER ARM SLIDING RESISTANCE
Standard value: 2.4 16 N
[Starting torque 0.3 2.0 Nm]
37100350042
DUST COVER REPLACEMENT
When the dust cover is damaged accidentally during service
work, replace the dust cover only as follows:
1.
2.
Fill inside the dust cover with multipurpose grease.
Apply the specified sealant to the dust cover lip.
Specified sealant:
3M ATD Part No. 8663 or equivalent
Using special tool, install the dust cover to the tie rod
end ball joint.
Press the dust cover with a finger to check whether the
dust cover is cracked or damaged.
3.
4.












MB990776




121.2 mm







315 mm

NOTES