air suspension TOYOTA LAND CRUISER 1996 J80 Workshop Manual

IN04Q−07
−
INTRODUCTION TERMS
IN−33
33
Author: Date:
1996 LAND CRUISER (RM451U)
TERMS
ABBREVIATIONS USED IN THIS MANUAL
AbbreviationsMeaning
ABSAnti−Lock Brake System
ACAlternating Current
ACCAccessory
ACISAcoustic Control Induction System
ACSDAutomatic Cold Start Device
A.D.D.Automatic Disconnecting Differential
A/FAir−Fuel Ratio
AHCActive Height Control Suspension
ALRAutomatic Locking Retractor
ALTAlternator
AMPAmplifier
ANTAntenna
APPROX.Approximately
A/TAutomatic Transmission (Transaxle)
AT FAutomatic Transmission Fluid
AUTOAutomatic
AUXAuxiliary
AV GAverage
AV SAdaptive Variable Suspension
BABrake Assist
BACSBoost Altitude Compensation System
BATBattery
BDCBottom Dead Center
B/LBi−Level
B/SBore−Stroke Ratio
BTDCBefore Top Dead Center
BVSVBimetallic Vacuum Switching V alve
Calif.California
CBCircuit Breaker
CCoCatalytic Converter For Oxidation
CDCompact Disc
CFCornering Force
CGCenter Of Gravity
CHChannel
COMB.Combination
CPECoupe
CPSCombustion Pressure Sensor
CPUCentral Processing Unit
CRSChild Restraint System
CTRCenter
C/VCheck Valve
CVControl Valve
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−
INTRODUCTION TERMS
IN−35
35
Author: Date:
1996 LAND CRUISER (RM451U)
H/B
Hatchback
H−FUSEHigh Current Fuse
HIHigh
HIDHigh Intensity Discharge (Head Lamp)
HPUHydraulic Power Unit
HSGHousing
HTHard Top
HWSHeated Windshield System
IACIdle Air Control
ICIntegrated circuit
IDIIndirect Diesel Injection
IFSIndependent Front Suspension
IGIgnition
IIAIntegrated Ignition Assembly
INIntake (Manifold, V
alve)
INTIntermittent
I/PInstrument Panel
IRSIndependent Rear Suspension
J/BJunction Block
J/CJunction Connector
KDKick−Down
LANLocal Area Network
LBLiftback
LCDLiquid Crystal Display
LEDLight Emitting Diode
LHLeft−Hand
LHDLeft−Hand Drive
L/H/WLength, Height, Width
LLCLong− Life Coolant
LNGLiquified Natural Gas
LOLow
LPGLiquified Petroleum Gas
LSDLimited Slip Dif ferential
LSP & PVLoad Sensing Proportioning And Bypass V alve
LSPVLoad Sensing Proportioning Valve
MAX.Maximum
M−FUSEMedium Current Fuse
MICMicrophone
MILMalfunction Indicator Lamp
MIN.Minimum
MPMultipurpose
MPXMultiplex Communication System
M/TManual Transmission (T ransaxle)
MTMount
MTGMounting
NNeutral
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W00493
30 mm
(1.18 in.)
SA1UN−03
SA2465
SA2462
SA2403
−
SUSPENSION AND AXLE FRONT DIFFERENTIAL CARRIER
SA−29
1996 LAND CRUISER (RM451U)
DISASSEMBLY
1. CHECK RUNOUT OF COMPANION FLANGE
Using a dial indicator, measure the vertical and lateral runout of
the companion flange. Maximum runout: 0.10 mm (0.0039 in.)
2. CHECK RING GEAR RUNOUT
Using a dial indicator, measure the ring gear runout. Maximum runout: 0.10 mm (0.0039 in.)
If the runout is greater than the maximum, replace the ring gear
and driven pinion as a set.
3. CHECK RING GEAR BACKLASH
Using a dial indicator, measure the ring gear backlash. Backlash: 0.13 −0.18 mm (0.0051 −0.0071 in.)
If the backlash is not within the specification, adjust the side
bearing preload or repair as necessary.
4. MEASURE DRIVE PINION PRELOAD
Using a torque wrench, measure the preload of backlash be-
tween the drive pinion and ring gear. Preload (at starting):
0.5 − 0.8 N·m (5 − 8 kgf·cm, 4.3 − 6.9 in.·lbf)
5. CHECK TOTAL PRELOAD
Using a torque wrench, measure the preload. Total preload (at starting):
Drive pinion preload plus
0.4 − 0.6 N·m (4 − 6 kgf·cm, 3.5 − 5.2 in.·lbf)
If necessary, disassemble and inspect the differential.
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W00493
30 mm
(1.18 in.)
SA1VH−04
SA2446
SA−80
−
SUSPENSION AND AXLE REAR DIFFERENTIAL CARRIER
1996 LAND CRUISER (RM451U)
DISASSEMBLY
1. CHECK RUNOUT OF COMPANION FLANGE
Using a dial indicator, measure the vertical and lateral runout of
the companion flange. Maximum runout: 0.10 mm (0.0039 in.)
2. CHECK RING GEAR RUNOUT
Using a dial indicator, measure the ring gear runout. Maximum runout: 0.10 mm (0.0039 in.)
If the runout is greater than the maximum, replace the ring gear.
3. CHECK RING GEAR BACKLASH
Using a dial indicator, measure the ring gear backlash. Backlash: 0.15 − 0.20 mm (0.0059 − 0.0079 in.)
HINT:
Perform the measurements at 3 or more positions around the
circumference of the ring gear.
If the backlash is not within the specification, adjust the side
bearing preload or repair as necessary.
4. MEASURE DRIVE PINION PRELOAD
(a) Using a torque wrench, measure the preload of backlash between the drive pinion and ring gear.
Preload (at starting):
0.7 − 1.0 N·m (7 − 10 kgf·cm, 6.1 − 8.7 in.·lbf)
(b) Using a torque wrench, measure the preload. Total preload (at starting):
Drive pinion preload plus
w/o Differential lock
0.4 − 0.6 N·m (4 − 6 kgf·cm, 3.5 − 5.2 in.·lbf)
w/ differential lock
0.3 − 0.7 N·m (3 − 7 kgf·cm, 2.6 − 6.1 in.·lbf)
If necessary, disassemble and inspect the differential.
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Z07256
ECU Side
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
SA−103
960
Author: Date:
1996 LAND CRUISER (RM451U) DIFF. fuse/
8 (IG) − Body ground
Ignition switch ONBattery positive voltage
Rear diff. lock position switch/
2 (RLP) − Body groundIgnition switch ON,
Indicator light (Rear) ONAbout 0 V
Ignition switch ON,
Indicator light (Rear) OFFBattery positive voltage
Front diff. lock position switch/ 9 (FLP) − Body ground
Ignition switch ON,
Indicator light (front) ON.About 0 V
Ignition switch ON,
Indicator light (front) OFFBattery positive voltage
Center diff. indicator switch/ 15 (4WD) − Body groud
Ignition switch ON,
Indicator light (Center diff. lock) ONAbout 0 V
Ignition switch ON,
Indicator light (Ce nter diff. lock) OFFBattery positive voltage
Differential lock control switch/
12 (R) − Body ground
Ignition switch ON,
Diff. lock control switch RR or FR RRBattery positive voltage
Ignition switch ON,
Diff. lock control switch OFFAbout 0 V
Differential lock control switch/ 6 (RF) − Body ground
Ignition switch ON,
Diff. lock control switch FR RRBattery positive voltage
Ignition switch ON,
Diff. lock control switch OFF or RRAbout 0 V
HINT:
When a signal enters the ECU to LOCK the front dif ferential and
set the rear differential to FREE (when battery positive voltage
is inputted to terminal 6 (RF) of ECU and about 0 V is inputted
to terminal 12 (R)), or a signal to FREE both the front and rear
differentials, the indicator lights keep blinking until the ignition
switch is turned off (Fail−safe function).
If the circuit is not as specified, check and repair or replace the
trouble part shown in the table above.
(b) Inspect the battery positive voltage Battery positive voltage: 10 − 14.5 V
(c) Inspect the system circuit with connector connected (1) Turn the ignition switch to the ON position.
(2) Keep the center Diff. lock condition.
(3) Remove the Diff. lock ECU.
(4) Using a voltmeter, measure the voltage when thedifferential lock control switch is in the position, as
shown below.
Terminals (Symbols)Switch PositionSTD Voltage (V)
15 (4WD) − 13 (GND)−0.5 or less
9 (FLP) − 13 (GND)FR RR0.5 or less
2 (RLP) − 13 (GND)RR or FR RR0.5 or less
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SR165−01
SR−2
−
STEERING TROUBLESHOOTING
1053
Author: Date:
1996 LAND CRUISER (RM451U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers \
indicate the priority of the likely
cause of the problem. Check each part in the order shown. If necessary, repair or replace these parts.
SymptomSuspect AreaSee page
Hard steering
11. Tires (Improperly inflated)
12.Power steering fluid level (Low)
13.Front wheel alignment (Incorrect)
14.Steering system joints (Worn)
15.Suspension arm ball joints (W orn)
16.Steering column (Binding)
17.Power steering vane pump
18.Power steering gearSA−3
SR−4 SA−4 −
−
−
SR−21
SR−33
Poor return
1. Tires (Improperly inflated)
2. Front wheel alignment (Incorrect)
3. Steering column (Binding)
4. Power steering gearSA−3
SA−4 −
SR−33
Excessive play
1. Steering system joints (Worn)
2. Suspension arm ball joints (W orn)
3. Intermediate shaft, Universal joint, Sliding yoke (Worn)
4. Front wheel bearing (W orn)
5. Power steering gear−
−
−
SR−7
SR−33
Abnormal noise
1. Power steering fluid level (Low)
2. Steering system joints (Worn)
3. Power steering vane pump
4. Power steering gearSR−4 −
SR−21
SR−33
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