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35-58SERVICE BRAKES - Service Adjustment Procedures
POINTS IN WAVEFORM MEASUREMENT
Symptom
Too small or zero waveform
amplitudeProbable causes
Faulty wheel speed sensorRemedy
Replace sensor
Incorrect pole piece-to-rotor clearance
Adjust clearance
Waveform amplitude fluctuates
excessively (this is no problem ifAxle hub eccentric or with large runout
Replace hub
the minimum amplitude is
100 mV
or more)
Noisy or disturbed waveformOpen circuit in sensor
Open circuit in harness
Incorrectly mounted wheel speed sensor
Rotor with missing or damaged teethReplace sensor
Correct harness
Mount correctly
Replace rotor
NOTEThe wheel speed sensor cable moves following motion of the front or rear suspension. Therefore, it is likely that it has an
open circuit only when driving on rough roads and it functions normally on ordinary roads. It is, therefore, recommended
to observe sensor output voltage waveform also under special conditions, such as rough road driving,
(ME!991 377)12FOO5i
INSPECTION OF HYDRAULIC UNITINSPECTION BY FEEL
(I) Jack up the vehicle and support the vehicle with rigid racks
placed at the specified jack-up points.
(2) Release the parking brake and determine the drag force
(drag torque) of each wheel by feel.
LJ(3) Set the MUT through the adapter harness (MB991377) as
illustrated.
(4) After confirming that the shift lever or selector lever is in
the neutral position, start the engine.
The ABS warning light lights up, it goes into the MUT mode.
In the MUT mode, ABS does not function.
(5) Operate the MUT to force the actuator to operate (item No.
04, 05, 06).
(6) Turning the wheel manually, check the change of the
braking force when the brake pedal is depressed.
The change should be as shown in the following illustration.
NOTEWhile the ABS is in the fail safe mode, the MUT actuator
test cannot be made.
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Page 867 of 1146
4-WHEEL STEERING SYSTEM (4WS) - Power Cylinder378-712AOlOE
IlZAO2;91
3A009
Wire
SERVICE POINTS OF REMOVALM37SBM3. REMOVAL OF CROSSMEMBER MOUNTING NUT
(1) Before removing the self-locking nuts, support the
differential case with a transaxle jack.
(2) Remove the self-locking nuts.
9. REMOVAL OF TIE ROD END NUT
Secure the power cylinder on the tie rod side with a
spanner and remove the power cylinder mounting nut.
INSPECTIONM37SCM
TIR ROD SWING TORQUE INSPECTION
(1) Swing the tie rod ten times hard.
(2) Point the tie rod end down, then attach a spring balance as
shown in the illustration to measure swing resistance
(swing torque).
Standard value: 9
- 55 N (2 - 12 Ibs.)
[0.5 - 3 Nm (4 - 26 in.lbs.)l(3) If the swing resistance exceeds the standard value, replace
the tie rod.
(4) If the swing resistance is less than the standard value, the
ball joint may be reused as long as it is not loose and
operates smoothly.
POWER CYLINDER SLIDE RESISTANCE CHECK
(1) Place the piston in a neutral position.
(2) Wrap a wire around the tie rod end, then measure slide
resistance with a spring balance as shown in the illustration.
Standard value: 67 N (15
Ibs.) or less
(3) If the slide resistance exceeds the standard value,
replace,the power cylinder.
(4) If the slide resistance is less than the standard value, the
power cylinder may be reused as long as it is not loose and
slides smoothly.
SERVICE POINTS OF INSTALLATIONM37SDP911. INSTALLATION OF’ POWER CYLINDER
/ 10. POWER
CYLINDER INSTALLATION BOLTS(1) Secure the power cylinder to the crossmember.
(2) Move the power cylinder piston rod over its full stroke
to determine its neutral position.
(3) Align tie rod ends and the installation holes at trailing
arm.
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4-WHEEL STEERING SYSTEM (4WS) - Rear Oil Pump37B-11
REAR OIL PUMP
REMOVAL AND INSTALLATION/
l Draining of Power Steering Fluid
(Refer to GROUP 37A- Service Adjustment
l Removal of Main Muffler Assembly(Refer to GROUP 15 - Exhaust Pipe and Muffler.)
Post-installation Operationl Installation of Main Muffler Assembly(Refer to GROUP 15 - Exhaust Pipe and Muffler.)l Refilling and Bleeding of Power Steering System
(Refer to GROUP 37A- Service AdjustmentProcedures.)l Bleeding of 4WS System
(Refer to P.37B-4.)l Checking of 4WS System for Operation
(Refer to P.37B-5.)
IIO-130Nm80- 94 ft.lbs.Removal steps
1. Rear shock absorber lower mounting bolt4*2. Crossmember bracketa*3. Crossmember mounting nut4.~rry~~,ff~h;t~Jside)
5.Suction hose6. Rear-wheel oil pump7. O-ring80
-94ft.lbs.
13FOO23
NOTEDo not disassemble the rear-wheel oil pump.
M3?MA- -12AOlOS
3
SERVICE POINTS OF REMOVALM37MBAA
2. REMOVAL OF CROSSMEMBER BRACKET / 3. CROSS-MEMBER MOUNTING NUT (ON DIFFERENTIAL SIDE)
(1) Support the differential case with the transmission jack,
then remove the crossmember bracket and crossmem-
ber mounting nut (on the differential side).
(2) Slightly lower the crossmember.
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