Page 806 of 1399
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ENGINE MECHANICAL TIMING CHAIN
EM−21
1996 LAND CRUISER (RM451U)
(c) Tie the timing chain with a cord as shown in the illustration
and make sure it doesn’t come loose.
9. INSTALL TIMING CHAIN COVER
(a) Remove any old packing (FIPG) material and be careful
not to drop any oil on the contact surfaces of the timing
chain cover and cylinder block.
Using a razor blade and gasket scraper, remove all
the old packing (FIPG) material from the gasket sur-
faces and sealing grooves.
Thoroughly clean all components to remove all the
loose material.
Using a non −residue solvent, clean both sealing
surfaces.
(b) Apply seal packing to the timing chain cover as shown in the illustration.
Seal packing: Part No. 08826−00080 or equivalent
Install a nozzle that has been cut to a 2 − 3 mm (0.08
− 0.12 in.) opening.
HINT:
Avoid applying an excessive amount to the surface.
Parts must be assembled within 5 minutes of ap-
plication. Otherwise the material must be removed
and reapplied.
Immediately remove nozzle from the tube and rein-
stall cap.
(c) Place 2 new O− rings in position on the timing chain cover.
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Page 814 of 1399
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ENGINE MECHANICAL CYLINDER HEAD
EM−29
1996 LAND CRUISER (RM451U)
16. DISCONNECT PS RESERVOIR TANK
Remove the 3 bolts and disconnect the reservoir tank.
17. DISCONNECT RADIATOR INLET HOSE
18. DISCONNECT NO. 3 WATER BYPASS HOSE
19. REMOVE GENERATOR (See page CH−8 )
20. REMOVE THROTTLE BODY (See page SF−45)
21. REMOVE OIL DIPSTICKS AND GUIDES FOR ENGINE AND TRANSMISSION
(a) Remove the 2 mounting bolts.
(b) Pull out the dipstick together with dipstick guide.
(c) Remove the O−ring from the dipstick guide.
22. REMOVE INTAKE MANIFOLD STAY
Remove the 2 bolts and intake manifold stay.
23. DISCONNECT FUEL INLET HOSE
Remove the union bolt and 2 gaskets, and disconnect the fuel
inlet hose from the fuel filter.
24. DISCONNECT ENGINE WIRE
(a) Disconnect the connectors. (1) Disconnect the ECT sender gauge connector.
(2) Disconnect the ECT cut switch connector.
(3) Disconnect the ECT sensor connector.
(4) Disconnect the knock sensor connector.
(5) Disconnect the crankshaft position sensor connec-tor.
(6) Remove the bolt and disconnect the engine wire from the cylinder block.
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P03849
Overall Length
EM0255
P04415
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ENGINE MECHANICAL CYLINDER HEAD
EM−43
1996 LAND CRUISER (RM451U)
(d) Check the valve overall length.
Standard overall length:
Intake98.4 mm (3.874 in.)
Exhaust97.4 mm (3.854 in.)
Minimum overall length:
Intake97.9 mm (3.854 in.)
Exhaust97.4 mm (3.835 in.)
If the overall length is less than minimum, replace the valve.
(e) Check the surface of the valve stem tip for wear.
If the valve stem tip is worn, resurface the tip with a grinder or
replace the valve.
NOTICE:
Do not grind off more than minimum.
7. INSPECT AND CLEAN VALVE SEATS
(a) Using a 45° carbide cutter, resurface the valve seats.
Remove only enough metal to clean the seats.
(b) Check the valve seating position. Apply a light coat of prussian blue (or white lead) to the
valve face. Lightly press the valve against the seat. Do not
rotate valve.
(c) Check the valve face and seat for the following:
If blue appears 360 ° around the face, the valve is
concentric. If not, replace the valve.
If blue appears 360 ° around the valve seat, the
guide and face are concentric. If not, resurface the
seat.
Check that the seat contact is in the middle of the
valve face with these width:
Intake1.2 − 1.6 mm (0.047 − 0.063 in.)
Exhaust1.0 − 1.4 mm (0.039 − 0.055 in.)
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Page 836 of 1399
EM1E6−01
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ENGINE MECHANICAL CYLINDER HEAD
EM−51
1996 LAND CRUISER (RM451U)
REASSEMBLY
HINT:
Thoroughly clean all parts to be assembled.
Before installing the parts, apply new engine oil to all slid-
ing and rotating surfaces.
Replace all gaskets and oil seals with new ones.
1. INSTALL SPARK PLUG TUBES
HINT:
When using a new cylinder head, spark plug tubes must be
installed.
(a) Mark the standard position away from the edge, onto the spark plug tube.
Standard protrusion: 45.5 mm (1.791 in.)
(b) Apply adhesive to the spark plug tube hole of the cylinder
head.
Sealant:
Part No. 08833−00070, Adhesive 1324, THREE BOND
1324 or equivalent
(c) Using a press, press in a new spark plug tube until there is 45.5 mm (1.791 in.) protruding from the camshaft bear-
ing cap installation surface of the cylinder head.
NOTICE:
Avoid pressing a new spark plug tube in too far by measur-
ing the amount of protrusion while pressing.
2. INSTALL TVV
(a) Apply adhesive to 2 or 3 threads of the TVV. Adhesive:
Part No.08833 −00080, THREE BOND 1344, LOCTITE
242 or equivalent
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EM1E7−01
EM−54
−
ENGINE MECHANICAL CYLINDER HEAD
1996 LAND CRUISER (RM451U)
INSTALLATION
1. INSTALL CYLINDER HEAD AND INTAKE MANIFOLD ASSEMBLY
(a) Place the cylinder head on the cylinder head. (1) Apply seal packing to the 2 locations as shown.
Seal packing: Part No. 08826−00080 or equivalent
NOTICE:
Do not apply too much seal packing
(2) Place a new cylinder head gasket in position on the
cylinder block.
NOTICE:
Be careful of the installation direction. (3) Place the cylinder head in position on the cylinderhead gasket.
(b) Install the cylinder head bolts.
HINT:
The cylinder head bolts are tightened in 3 progressive
steps (steps (b), (d) and (e)).
If any cylinder head bolt is broken or deformed, replace
it.
(1) Apply a light coat of engine oil on the threads and under the heads of the cylinder head bolts.
(2) Install and uniformly tighten the 14 cylinder head
bolts and plate washers in several passes, in the se-
quence shown.
Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
If any of the cylinder head bolts does not meet the torque speci-
fication, replace the cylinder head bolt.
(3) Mark the front of the cylinder head bolt head withpaint.
(4) Retighten the cylinder head bolts by 90 ° in the nu-
merical order shown.
(5) Retighten the cylinder head bolts by an additional 90°.
(6) Check that the painted mark is now facing rearward.
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Front Mark
P09890
Push
P08374A16075
1 Dot Mark
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ENGINE MECHANICAL CYLINDER HEAD
EM−59
1996 LAND CRUISER (RM451U)
6. INSTALL CHAIN TENSIONER
(a) Place a new gasket so that the front mark is toward the
front side.
(b) Push the tensioner by hand until it touches the head installation surface, then install the 2 nuts.
(c) Tighten the 2 nuts. Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)
7. CHECK VALVE TIMING
(a) Turn the crankshaft pulley, and align its groove with the timing mark ”0” of the timing chain cover.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that the timing marks (1 and 2 dots) of the camshaft
drive and driven gears are in straight line on the cylinder
head surface as shown in the illustration.
If not, turn the crankshaft 1 revolution (360° ) and align the
marks as above.
8. CHECK AND ADJUST VALVE CLEARANCE (See page
EM−4)
Turn the camshaft and position the cam lobe upward and check
and adjust the valve clearance.
Valve clearance (Cold):
Intake0.15 − 0.25 mm (0.006 − 0.010 in.)
Exhaust0.25 − 0.35 mm (0.010 − 0.041 in.)
9. INSTALL SPARK PLUGS
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EM−62
−
ENGINE MECHANICAL CYLINDER HEAD
1996 LAND CRUISER (RM451U)
(h) Connect the engine wire to the intake manifold and cylin-
der block with the 2 bolts.
(i) Connect the PNP switch connector.
(j) Connect the 2 heated oxygen sensor connectors.
(k) Connect the connectors.
(1) Connect the Knock sensor connector.
(2) Connect the oil level sensor connector.
(3) Connect the 2 connectors to tthe ransmission.
(4) Connect the starter connector.
(l) Connect the engine wire to the cylinder block with the bolt.
(m) Connect the connectors.
(1) Connect the ECT sender gauge connector.
(2) Connect the ECT cut switch connector.
(3) Connect the ECT sensor connector.
(4) Connect the knock sensor connector.
(5) Connect the crankshaft position sensor connector.
19. CONNECT FUEL INLET HOSE
Connect the fuel inlet hose to the fuel filter with 2 new gaskets
and the union bolt. Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
20. INSTALL INTAKE MANIFOLD STAY
Install the intake manifold stay with the 2 bolts. Torque: 36 N·m (360 kgf·cm, 26 ft·lbf)
21. INSTALL OIL DIPSTICKS AND GUIDES FOR ENGINE AND TRANSMISSION
(a) Install a new O−ring to the dipstick guide.
(b) Apply a light coat of engine oil on the O −ring.
(c) Push in the dipstick guide into the guide hole of the oil pan.
(d) Install the dipstick guide with the 2 bolts. Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
22. INSTALL THROTTLE BODY (See page SF−48)
23. INSTALL GENERATOR AND DRIVE BELTS (See page CH−19 )
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Page 863 of 1399
EM−78
−
ENGINE MECHANICAL ENGINE UNIT
1996 LAND CRUISER (RM451U)
15. INSTALL TRANSFER SHIFT LEVER
(a) Install the shift lever and hose clamp with the 4 bolts.
Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
(b) Connect the shift rod and install the pin.
(c) Install the transfer shift lever boot and transmission shift lever assembly with the 10 bolts.
Torque: 5.4 N·m (55 kgf·cm, 48 in.·lbf)
(d) Connect the 3 connectors to the transmission shift lever assembly.
(e) Install the console box with the 3 bolts.
(f) Connect the pattern select switch connector.
(g) Install the console with the 4 screws.
(h) Install the transfer shift lever knob.
(i) Shift the shift lever to N position.
(j) Fully turn the control shaft lever back and return 2 notches. It is now in neutral position.
(k) Connect the transmission control rod with the nut.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)
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