-
STEERING - Specificdions
i’.g=s
“,.
itemsSpecifications
Oil pump pressure
MPa (psi.)
Pressure gauge valve closed7.5-8.2 (1,067-1,166)
Pressure gauge valve opened0.8-I .O (114-142)
Oil pressure switch operating pressure
MPa (psi1Oil pressure switch contacts closed (continuity)
1.5-2.0 (213-284)Oil pressure switch contacts opened (no continuity)
0.7-1.2 (100-171)Total pinion torque
Nm
(in.lbs.)0.6-I .3 (5-l 1)Tie-rod joint swing resistance
N (Ibs.18-20 (1.9-4.6)Tie-rod joint swing torque
Nm
(in.lbs. 12-5 (17-43)
LimitSteering wheel free play (when hydraulic operation)
30
(1.2)mm (in.)Variation of tie rod end ball joint shaft direction
mm
(in.) 1.5 (.059)
Oil pump pressure
Pressure gauge valve openedMPa (psi)1.5 (213)Space between vane and rotor
mm
(in.)0.06 i.0024)Shaft backlash of pump body bushing and pulley assembly
0.1
i.004)mm (in.)
TORQUE SPECIFICATIONSNlSCC--
c.ItemsSteering wheel and shaft
Steering wheel lock nut
Lower bracket
Tilt bracket installation bolt
Joint assembly
Column support
Column tube clamp
Manual steering gear box
Joint assembly to gear box
Tie rod end to knuckle
Stay to crossmember
Stabilizer bar bracket
Front roll stopper insulator nut
Center member to body
Front exhaust pipe to rubber hanger
Front exhaust pipe mounting bolt
Front exhaust pipe mounting nut
Gear box mounting bracket to crossmember
Tie rod end lock nut
Tie rod to rack
Rack support cover locking nut
Top plug locking nutNmftlbs.35-45
25-33
8-12
6-9
8-12
6-9
15-2011-148-12
6-9
4-5
3-4
15-20 a11-1424-34
17-25
70-8051-58
30-4222-30
50-6536-47
80-l 0058-72
IO-157-l 1
30-4022-29
30-4022-29
60-8043-58
50-5536-40
80-10058-72
50-7036-51
50-7036-51
STEERING - Special Tools/Service Adjustment Procedures
ToolNumberName1 UseI
MB991213Rack installer ’Rack installation:,.I/ ._i’, ‘,‘#
MB991317Seal ring installerCompression of the seal rings afterreplacement of the pinion seal rings13A0282
,
SERVICE ADJUSTMENT PROCEDURiS
< MANUAL STEERING >
STEERING WHEEL FREE PLAY CHECKNOSFAAE
1. Set front wheels straight ahead.
2.’ Measure the play on steering wheel circumference before
wheels move when slightly moving steering wheel in both
directions.Limit: 30 mm (1.2
in.1
3.When the play exceeds the limit, check play in steering shaft
connection and steering linkage. Correct or replace.4. When
(3) check provides good results, check the following
to adjust:l Remove the steering gear box, check and adjust total
pinion starting torque.
STEERING ANGLE CHECKNlSFDBFl1. Set front wheels on turning radius gauge and measure
steering angle.
Standard values:
Inner wheel37000’
2 20
Outer wheel30000’
2. When not within the standard value, it is probably a toe
problem. Adjust toe (refer to GROUP 2-Service Adjusttierit
Procedures) and recheck.
TIE ROD END BALL JOINT VARIATION CHECK
(SHAFT DIRECTION)NlSFPAB1. Hold the ball joint with pliers.
2. Set a caliper gauge as illustrated and measure the dis-
placement with the ball stud compressed.
Limit: 1.5 mm
LO59 in.)
3.If the measured displacement exceeds the limit, replace the
tie-rod end.
CautionEven if the variation is within the limit, check ball joint
starting torque.
19-8STEERING - Service Adjustment Procedures < Manual Steering>
136005!Tape or mark
on steering
column cover
Tape or mark
on steering
wheel hub16A0901
Dotted lines
show wheel
Tape or mark
on steering
wheel rim
nce off-center
16AOOOl
IO036 splines
;EEE;D END BALL JOINT STARTING TORQUE
Nl9FEBCa1. Disconnect tie rod and knuckle with special tool.
Caution
Be sure to tie the cord of the special tool to the nearby
part-2. Move ball joint stud several times and install nut on stud.
’ Measure ball joint starting torque.
Standard value:
0.5-2.5 Nm (4-22 in.lbs.1
3.When starting torque exceeds the standard value, replace tie
rod end.
4.When the starting torque is under the standard value, checkfor play or ratcheting in ball joint. If none of these, it is still
serviceable.
STEERING WHEEL CENTERINGNlSFNAC
SIMPLIFIED STEERING WHEEL CENTERING
Determining Steering Wheel’s Off Center1. For the road test, take along chalk or tape and a ruler.
2. Drive straight ahead on an uncambered level surface.
3.When the vehicle’s wheels are pointing straight ahead, markthe steering wheel hub and column cover with a chalk or
tape line.4. Stop the vehicle and line up the marks on the hub and
column cover.5. Place a tape strip or mark on the steering wheel rim.
6.Hold a ruler next to the rim as shown in the illustration, and
then steer the steering wheel until it is in the desired centered
position.
7.Record the distance the strip or mark on the rim has moved.This is how far the steering wheel is off center. If it is more
than 16 mm
(518 in.) off center, it can be centered by
indexing it ten degrees towards the center.
,Indexing Steering Wheel to Center
ltThe steering wheel shaft has 36 splines, allowing the steering
wheel to be indexed in tendegree increments.
1. Remove the steering wheel.
2. Without disturbing the position of the steering wheel shaft,
re-install the wheel as near on-center as possible.
STEERING - Service Adjustment Procedures < Manual Steering>_ i ‘I 9;sSteering wheel off center left
13K71013A0289
Off center to leftOff center to left
Off center to rightOff center to right
Turn both tie rods in the same direction.
PRECISIG~ STEERING WHEEL CENTFFJIhll
In general,. the tie rods are adjusted to steer the’front wheels inthe same direction that the steering wheel is off center. If the
steering wheel is off canter to the left, center it by adjusting the
tie rods to make the front wheels steer toward the left, and vice
versa.1. Mark the tie rods and tie rod ends with chalk before
loosening the lock nuts.
2. Hold the tie rod with a wrench and loosen the lock nut.
3.Hold the tie rod end with a wrench and turn the tie rod the
desired number of turns.
For
2O or 6 mm (.25 in.) at the steering wheel rim 115
turn of tie rods
4. Tighten the lock nut to specified torque, taking care not to
turn the tie rod.
19-10STEERING - Service Adjustment Procedures c Power Steering>
r13A029213A0293
r
1
i
SERVICE ADJUSTMENT PROCEDURES
STEERING WHEEL FREE PLAY CHECKNlSFABH
1. With engine running (hydraulic operation), set front wheels
straight ahead.2. Measure the play on steering wheel circumference before
wheels start to move when slightly moving steering wheel
in both directions.
Limit: 30 mm (1.2
in.13. When the play exceeds the limit, check for play on steering
shaft connection and steering linkage. Correct or replace.
4.If the free play still exceeds the limit value set steering wheel
straight ahead with engine stopped. Load 5
N (1 lb.1 towardssteering wheel circumference and check play.
Standard value (steering wheel play with engine
stopped): 11 mm
I.43 in.)
If the play exceeds the standard value, remove steering gearbox and check total pinion torque.
STEERING ANGLE CHECKN19FDBJ1. Set front wheels on turning radius gauge and measure
steering angle.Standard values:
Turbo
Inner wheel
31”30’+2”Outer wheel
27”OOOther models
Inner wheel
35”00’_+2”Outer wheel
2990’
2. When not within the standard value, it is probably a toe
problem. Adjust toe (refer to GROUP 2-Service Adjustment
Procedures) and recheck.TIE ROD END BALL JOINT VARIATION CHECK
(SHAFT DIRECTION)N19FVA8The inspection procedure for the tie rod end ball joint variation
is the same as for the manual steering system. (Refer to
P. 19-7.)
TIE ROD END BALL JOINT STARTING TORQUE
CHECKNlSFEBDThe inspection procedure for the tie rod end ball joint starting
torque is the same as for the manual steering system. (Refer to
P.19-8.)
19-14STEERING - Service Adjustment Procedures < Power Steering >Shut-off valv
Pressure gauge
(FW close)
(C-3309-E)I
Temperature
gauge
\e’\
Pressure hoses
Re(Mti990994)
\Oil pump
713AO145Shut-off valve
Pressure gauge(FullY ?penl
Pressure hoses
OIL PUMP PRESSURE TESTNl9FlAF
CHECKING THE OIL PUMP RELIEF PRESSURE1. Disconnect the pressure hose from the oil pump, and then
connect the special tools.
2.Bleed the air, and then turn the steering wheel several timeswhile the vehicle is not moving so that the temperature of
the fluid rises to approximately
50-60°C (122-14OOF).3. Start the engine and idle it at 1,000
f 100 rpm.
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.
Standard value: 7.5-8.2
MPa (1,067-1,166 psi)
Caution
Pressure gauge shut off valve must not remain closed formore than 10 seconds.
5.If it is not within the standard value, overhaul the oil pump.
6.Remove the special tools, and then tighten the pressure hoseto the specified torque.
7. Bleed the system.
CHECKING THE PRESSURE UNDER NO-LOAD CONDITIONS1. Disconnect the pressure hose from the oil pump, and then
connect the special tool.
2.Bleed the air, and then turn the steering wheel several timeswhile the vehicle is not moving so that the temperature of
the fluid rises to approximately
50-60°C (122-14OOF).3. Start the engine and idle it at 1,000
-t 100 rpm.
4.
Check whether or not the hydraulic pressure is the standard
value when no-load conditions are created by fully openingthe shut-off valve of the pressure gauge.
Standard value:
0.8-I .O MPa (114-142 psi)
Limit: 1.5
MPa (213 psi)
5. 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.
6.Remove the special tools, and then tighten the pressure hoseto the specified torque.
7. Bleed the system.
-
c. .
STEERING - Service Adiustment Procedures
Shut-off valve
Pressure gauge
CHECKING THE STEERING GEAR PETENTION HYDRAULIC
PRESSURE1. Disconnect the pressure hose from the oil
pbmd, and iheh
connect the special tools.
2.Bleed the air, and then turn the steering wheel several timeswhile the vehicle is not moving so that the temperature of
the fluid rises to approximately
50~60OC (122~14pyF).
3. ‘Start the engine and idle it at 1,000 +
100 rem: .‘,’.
4.Fully close and fully open the shut-off valve of the pressure
gauge.
5.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: 7.5-8.2 MPa (1,067-1,166 psi)6. When not within the standard value, overhaul the steering
gear box.
Remeasure fluid pressure.
7.Remove the special tools, and then tighten the pressure hoseto the specified torque.
8. Bleed the system.
OIL PRESSURE SWITCH CHECKNlSFUAB1. Disconnect the pressure hose from the oil pump, and then
connect the special tools.
2.Bleed the air, and then turn the steering wheel several timeswhile the vehicle is not moving so that the temperature of
the fluid rises to approximately
50-60°C (122-14OOF).3. The engine should be idling.
4. Disconnect the connector for the oil pressure switch, and
place an ohmmeter ,in position.
5.Gradually close the shut-off valve of the pressure gauge andincrease the hydraulic pressure then check whether the
hydraulic pressure that activates the switch is the standard
value.
Standard value: 1.5-2.0 MPa (213-284 psi)
6. Gradually open the shut-off valve and reduce the hydraulic
pressure; then check whether the hydraulic pressure that
deactivates the switch is the standard value.
Standard value: 0.7-1.2 MPa (100-171 psi)
7.Remove the special tools, and then tighten the pressure hoseto the specified torque.
8. Bleed the system.
19-22STEERING - Manual Steering Gear Box
13Roo7!
J Mow&g clamp
SERVICE POINTS OF REMOVAL.dlSLl$iF
4. DISCONNECTION OF TIE ROD END
Using the special tool, disconnect the tie’ rod from the
knuckle.
Caution
1.Be sure to tie the cord of the special tool to the nearby
part*2. loosen the nut but do not remove it.
10. REMOVAL OF GEAR BOX ASSEMBLY
(1) Move the rack completely to the right and then remove
the gear box from the crossmember.
(2) While tilting the gear box downward, remove it to the
left.
Caution
When removing the gear box, pull it out carefully andslowly to avoid damaging the boots.
INSPECTIONNlSLCAFaGEAR BOX FOR TOTAL PINION TORQUE
Using the special tools, rotate the pinion gear at the rate of one
rotation in approximately 4 to 6 seconds to check the total pinion
torque.
Standard value:
From
0-90°0.6-l .3 Nm (5-11 in.lbs.1From
90°-650°0.2-1.0 Nm (2-9 in.lbs.1
NOTE
Measure the pinion torque through the whole stroke of the rack.If the measured value is not within the standard range, first
adjust the rack support cover, and then check the total pinion
torque again.If the total pinion torque cannot be adjusted to within the
standard range by adjusting the rack support cover,
,check the
rack support cover, rack support spring, rack support and
replace any parts necessary.
CHECK THE TIE ROD FOR SWING RESISTANCE
(1) Give 10 hard swings to the tie rod.
(2) Measure the tie rod swing resistance with a spring balance.Standard value:
B-20 N (1.8-4.4 Ikw.1
12-5 Nm (17-43 in.lbs.)l
(3) If the measured value exceeds the standard value, replace
tie rod assembly.
NOTE
Even if the measured value is below the standard vglue, thetie rod which swings smoothly without excessive
clay may
be used.
SERVICE POINTS OF INSTALLATIONNlSLDAF
11. INSTALLATION OF MOUNTING RUBBER/lo. GEAR BOX
ASSEMBLY
When installing the mounting rubber, align the projection ofthe mounting rubber with the indentation in the
cross-member to install the gear box.