1996 TOYOTA LAND CRUISER lock

Z06953SST
SA2444
SA−94
−
SUSPENSION AND AXLE REAR DIFFERENTIAL CARRIER
1996 LAND CRUISER (RM451U)
14. w/o DIFFERENTIAL LOCK:
INSTALL ADJUSTING NUTS
Install the 2 adjusting nuts on the carrier, making sure the nuts
are threaded properly.
15. w/o DIFFERENTIAL LOCK: INSTALL BEARING CAPS
Align the matchmarks on the cap and carrier. Screw in the 2
bearing cap bolts 2 or 3 turns and press down the bearing cap
by hand.
HINT:
If the bearing cap does not fit tightly on the carrier , the adjusting
nuts are not threaded properly.
Reinstall the adjusting nuts if necessary.
16. w/o DIFFERENTIAL LOCK: ADJUST SIDE BEARING PRELOAD
(a) Torque the 4 bearing cap bolts to the specified torque, then loosen them to the point where the adjusting nuts
can be turned by SST.
SST 09504−00011
Torque:78 N·m (800 kgf·cm, 58 ft·lbf)
(b) Fully tighten the 4 bearing cap bolts by hand.
(c) Using the SST, torque the adjusting nut on the ring gear side until the ring has a backlash of about 0.2 mm (0.008
in.).
(d) With turning the ring gear, use the SST to fully tighten the
adjusting nut on the drive pinion side. After the bearings
as settled, loosen the adjusting nut on the drive pinion
side.
(e) Place a dial indicator on the top of the adjusting nut on the ring gear side.
(f) Adjust the side bearing for zero preload by tightening the
other adjusting nut until the pointer on the indicator be-
gins to move.
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Z06918
−
SUSPENSION AND AXLE REAR DIFFERENTIAL CARRIER
SA−95
1996 LAND CRUISER (RM451U)
(g) Using the SST, torque the adjusting nut 1−1.5 notches
from the zero preload position.
(h) Using a dial indicator, adjust the ring gear backlash until it is within the specification.
Backlash: 0.15 − 0.20 mm (0.0059−0.0079 in.)
HINT:
The backlash is adjusted by turning the left and right adjusting
nuts equal amounts. For example, loosen the nut on the left
side one notch and torque the nut on the right side one notch.
(i) Torque the 4 bearing cap bolts. Torque:78 N·m (800 kgf·cm, 58 ft·lbf)
(j) Recheck the ring gear backlash. Backlash: 0.15 − 0.20 mm (0.0059−0.0079 in.)
17. MEASURE TOTAL PRELOAD
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)
18. INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION
(a) Coat 3 or 4 teeth at 3 different positions on the ring gear
with red lead.
(b) Turn the companion flange, pin both directions to inspect the ring gear for proper tooth contact.
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Z15220
FIPG Width Approx.
1 − 2 mm (0.04 − 0.08 in.)
SA2129
Z10150
Adhesive
SA−98
−
SUSPENSION AND AXLE REAR DIFFERENTIAL CARRIER
1996 LAND CRUISER (RM451U)
25. RECHECK RING GEAR BACKLASH
Using a dial indicator, measure the ring gear backlash.
Ring gear backlash:
0.15 − 0.20 mm (0.0059 − 0.0079 in.)
26. RECHECK TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION
27. CHECK RUNOUT OF COMPANION FLANGE (See
page SA−80 )
28. w/o DIFFERENTIAL LOCK: INSTALL ADJUSTING NUT LOCKS
(a) Install 2 new nut locks on the bearing caps.
(b) Tightening 2 bolts, bend the nut locks. Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
29. w/ DIFFERENTIAL LOCK: INSTALL ACTUATOR, SHIFT FORK AND SLEEVE
(a) Clean contacting surfaces of any FIPG material using gasoline or alcohol.
(b) Apply FIPG to the actuator.
FIPG: Part No. 08826−00090, THREE BOND 1281 or
equivalent
HINT:
Install the actuator within 10 minutes after applying FIPG.
(c) Install the actuator to the differential and match the shift fork hole.
(d) Clean the threads of set bolt and fork shaft with the white
gasoline.
(e) Coat the threads of the set bolt with adhesive.
Adhesive: Part No. 08833 −00070, THREE BOND 1324
or equivalent
(f) Tighten the shift fork shaft set bolt. Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
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SA2133
SA2131
Z15219
FIPG Width Approx.
1 − 2 mm (0.04 − 0.08 in.)
−
SUSPENSION AND AXLE REAR DIFFERENTIAL CARRIER
SA−99
1996 LAND CRUISER (RM451U)
(g) Engage the sleeve with the dog clutch of the differential
case.
(h) Tighten the 4 bolts. Torque: 24 N·m (240 kgf·cm, 17 ft·lbf)
30. w/ DIFFERENTIAL LOCK: INSTALL COVER
(a) Clean contacting surfaces of any FIPG material using gasoline or alcohol.
(b) Apply FIPG to the cover.
FIPG: Part No. 08826−00090, THREE BOND 1281 or
equivalent
HINT:
Install the cover within 10 minutes after applying FIPG.
(c) Tighten the 3 bolts. Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
31. w/ DIFFERENTIAL LOCK: INSTALL INDICATOR SWITCH
Install the indicator switch with a new gasket.
Torque: 40 N·m (410 kgf·cm, 30 ft·lbf)
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SA1VL−03
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
SA−101
958
Author: Date:
1996 LAND CRUISER (RM451U)
DIFFERENTIAL LOCKING SYSTEM
ON−VEHICLE INSPECTION
1. INSPECT DIFFERENTIAL LOCK SYSTEM
(a) Inspect the indicator lights.
Check that the indicator lights (front side and rear side)
light up for approx. 1 second when the ignition switch is
turned ON.
(b) Inspect the differential lock operation. (1) Jack up the vehicle then start the engine.
(2) Put the transfer shift lever on the L position.
(3) When the Diff. lock control switch is set to the RR
position, the indicator light (rear side) is turned on.
Differential lock is applied to the rear wheel at this
time.
HINT:
If the gears of the differential lock system are not meshed, the
indicator light remains blinking, so rotate the tires to mesh the
gear.
(4) When the Diff. lock control switch is at the OFF posi-
tion, the indicator light goes off.
Differential lock is released for the rear wheel at this
time.
(5) When the Diff. lock control switch is set to the FR/ RR position, the indicator lights (front side and rear
side) are turned on.
Differential lock is applied to both the front wheels
and rear wheels at this time.
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Z07254
M3 M4 M1 M2
Z07255
Wire Harness Side
SA−102
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
959
Author: Date:
1996 LAND CRUISER (RM451U)
(6) Check the voltage between the terminals of the Diff.
lock ECU when switching the Diff. lock control
switch with the speedometer, registering approx. 8
km/h (5 mph) or more.
(7) Check that the indicator lights blink when center Diff. lock release mode is set.
Diff. lock is released for both the front wheels and
rear wheels at this time.
(8) Return the Diff. lock control switch to OFF.
(9) Stop the engine and lower the vehicle.
2. INSPECT DIFF. LOCK SYSTEM CIRCUIT
(a) Inspect the system circuit with connector disconnected. Disconnect the connector from the Diff. lock ECU and in-
spect the connector on the wire harness side, as shown
in the chart.
Trouble Part/
Terminals (Symbols)ConditionSpecified V alue
Rear diff. lock actuator/
1 (M2) − 3 (M1)−Less than 100 Ω
Front diff. lock actuator/
5 (M4) − 7 (M1)−Less than 100 Ω
Body ground/
13 (GND) − Body ground−Continuity
Vehicle speed sensor/
4(SPD) − Body groundVehicle moving slowly1 pulse each 40 cm (15.75 in.)
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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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W02075
Heater Main Relay
5 Relay Housing
Metallic Parts
3
2
41
Z07257
Free−Lock
Lock−Free
Heater
Main
Relay Battery Battery
Heater
Main
Relay
SA−104
−
SUSPENSION AND AXLE DIFFERENTIAL LOCKING SYSTEM
961
Author: Date:
1996 LAND CRUISER (RM451U) 3 (M1) −
1 (M2)
OFF − RR
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
1 (M2) − 3 (M1)RR − OFF
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
7 (M3) − 5 (M4)OFF or RR − FR RR
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
5 (M4) − 7 (M3)FR RR − RR or OFF
0.5 or less →
10 − 14.5
(Approx. 1 sec) → 0.5 or less
If the circuit is not as specified, replace the ECU.
(d) Install the ECU in place.
3. INSPECT DIFF. LOCK ACTUATOR
(a) Jack up the vehicle.
(b) Use the heater main relay and connect it, as shown below.
NOTICE:
Connect the terminals being careful not to touch the neigh-
boring terminals or metallic parts of relay housing.
(c) Rotate the tire and check that differential lock has oc- curred.
If operation is not as specified, replace the actuator.
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