Page 793 of 1399
V00831
Adjusting Shim Selection Chart (Intake)
New shim thickness
Shim No. Thickness Shim No. Thickness
mm (in.)
Intake valve clearance (Cold):
0.15 − 0.25 mm (0.006 − 0.010 in.)EXAMPLE:
The 2.800 mm (0.1 102 in.) shim is installed,
and the measured clearance is 0.440 mm
(0.0173 in.). Replace the 2.800 mm (0.1102
in.) shim with a No. 12 shim. HINT: New shims have the thickness in
millimeter imprinted on the face
EM−8
−
ENGINE MECHANICAL VALVE CLEARANCE
511
Author: Date:
1996 LAND CRUISER (RM451U)
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Page 794 of 1399
V00832
Adjusting Shim Selection Chart (Exhaust)
Installed shim thicknessmm (in.)
mm (in.)
Measured clearance
New shim
thickness
Shim No. Thickness Shim No. Thickness
mm (in.)
Exhaust valve clearance (Cold):
0.25 − 0.35 mm (0.010 − 0.014 in.)EXAMPLE:
The 2.800 mm (0.1 102 in.) shim is installed,
and the measured clearance is 0.440 mm
(0.0173 in.). Replace the 2.800 mm (0.1102
in.) shim with a No. 10 shim. HINT: New shims have the thickness in
millimeter imprinted on the face
−
ENGINE MECHANICAL VALVE CLEARANCE
EM−9
512
Author: Date:
1996 LAND CRUISER (RM451U)
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Page 795 of 1399

EM0KT−06
EM−10
−
ENGINE MECHANICAL IGNITION TIMING
513
Author: Date:
1996 LAND CRUISER (RM451U)
IGNITION TIMING
INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CONNECT TOYOTA HAND −HELD TESTER OR OBD II
SCAN TOOL
(a) Remove the fuse cover on the instrument panel.
(b) Connect the TOYOTA hand−held tester or OBD II scan tool to the DLC3.
(c) Please refer to the TOYOTA hand−held tester or OBD II scan tool operator’s manual for further details.
3. CONNECT TIMING LIGHT TO ENGINE
4. CHECK IDLE SPEED
(a) Race the engine speed at 2,500 rpm for approx. 90 se- conds.
(b) Check the idle speed. Idle speed: 650 ± 50 rpm
5. INSPECT AND ADJUST IGNITION TIMING
(a) Using SST, connect terminals TE1 and E1 of the DLC1. SST 09843−18020
(b) Using a timing light, check the ignition timing. Ignition timing: 3 ° BTDC @ idle
(Transmission in neutral position and A/C OFF)
(c) Loosen the hold−down bolt, and adjust by turning the dis-
tributor.
(d) Tighten the hold− down bolt, and recheck the ignition tim-
ing.
Torque: 18 N·m (180 kgf·cm, 13 ft·lbf)
(e) Remove the SST from the DLC1. SST 09843−18020
6. FURTHER CHECK IGNITION TIMING Ignition timing: 2 − 13° BTDC @ idle
(Transmission in neutral position and A/C OFF)
HINT:
The timing mark moves in a range between 2 ° and 13° .
7. DISCONNECT TIMING LIGHT FROM ENGINE
8. DISCONNECT TOYOTA HAND −HELD TESTER OR
OBD II SCAN TOOL
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EM0KU−05
−
ENGINE MECHANICAL IDLE SPEED
EM−11
514
Author: Date:
1996 LAND CRUISER (RM451U)
IDLE SPEED
INSPECTION
1. INITIAL CONDITIONS
(a) Engine at normal operating temperature.
(b) Air cleaner installed.
(c) All pipes and hoses of air induction system connected.
(d) All accessories switched OFF.
(e) All vacuum lines properly connected.
HINT:
All vacuum hoses for EGR system, etc. should be properly connected.
(f) SFI system wiring connectors fully plugged.
(g) Ignition timing set correctly.
(h) Transmission in neutral position.
(i) Air conditioning switched OFF.
2. CONNECT TOYOTA HAND−HELD TESTER OR OBD II SCAN TOOL (See page EM−10)
3. INSPECT IDLE SPEED
(a) Race the engine speed at 2,500 rpm for approx. 90 seconds.
(b) Check the idle speed.
Idle speed: 650 ± 50 rpm
If the idle speed is not as specified, check the IAC valve.
4. DISCONNECT TOYOTA HAND−HELD TESTER OR OBD II SCAN TOOL
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EM1E8−01
EM−12
−
ENGINE MECHANICAL TIMING CHAIN
515
Author: Date:
1996 LAND CRUISER (RM451U)
TIMING CHAIN
COMPONENTS
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EM1E9−01
−
ENGINE MECHANICAL TIMING CHAIN
EM−13
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE OIL
2. DRAIN ENGINE COOLANT
3. REMOVE ENGINE UNDER COVER
4. REMOVE RADIATOR (See page CO−14 )
5. DISCONNECT A/C COMPRESSOR AND BRACKET
(a) Loosen the idler pulley nut and adjusting bolt, and remove
the drive belt.
(b) Remove the 4 mounting bolts, and disconnect the com- pressor from the bracket.
HINT:
Put aside the compressor, and suspend it.
(c) Remove the 5 bolts and A/C compressor bracket.
6. REMOVE RADIATOR PIPE
(a) Disconnect the No. 2 radiator hose from the water inlet.
(b) Remove the 2 nuts and radiator pipe.
7. REMOVE WATER PUMP
Remove the 4 bolts, 2 nuts, water pump and gasket.
8. REMOVE CYLINDER HEAD (See page EM−28 )
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EM−14
−
ENGINE MECHANICAL TIMING CHAIN
1996 LAND CRUISER (RM451U)
9. DISCONNECT OIL COOLER PIPE BRACKET FROM
NO. 1 OIL PAN
10. REMOVE OIL LEVEL SENSOR
(a) Remove the 4 bolts and level sensor.
(b) Remove the gasket from the level sensor.
11. REMOVE BOLTS HOLDING NO.1 OIL PAN TO TRANS-
MISSION HOUSING
Remove the 6 bolts.
12. REMOVE NO. 2 OIL PAN (See page LU−5)
13. REMOVE NO. 1 OIL PAN (See page LU−5)
14. REMOVE CRANKSHAFT PULLEY
(a) Using SST, remove the pulley bolt. SST 09213−58012, 09330 −00021
(b) Remove the crankshaft pulley.
HINT:
If necessary, remove the pulley with SST. SST 09950−50010 (09951 −05010, 09952−05010,
09953 −05010, 09953 −05020, 09954−05020)
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−
ENGINE MECHANICAL TIMING CHAIN
EM−15
1996 LAND CRUISER (RM451U)
15. CHECK THRUST CLEARANCE OF OIL PUMP DRIVE
SHAFT GEAR
Using a dial indicator with lever type attachment, measure the
thrust clearance.
Standard thrust clearance:
0.040 − 0.160 mm (0.0016 − 0.0063 in.)
Maximum thrust clearance: 0.30 mm (0.0118 in.)
If the thrust clearance is greater than maximum, replace the oil
pump drive shaft gear and/or timing chain cover.
16. REMOVE DRIVE BELT IDLER PULLEY
Remove the bolt and idler pulley.
17. REMOVE TIMING CHAIN COVER
(a) Remove the 9 mounting bolts, 2 mounting nuts and drive belt adjusting bar.
(b) Remove the oil pump by prying the portions between the cylinder block and oil pump with a screwdriver.
NOTICE:
Be careful not to damage the contact surfaces of the cylin-
der block and oil pump.
(c) Remove the O−rings from the oil pump.
(d) Remove the gasket from the oil pump.
18. REMOVE TIMING CHAIN AND CAMSHAFT TIMING GEAR
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