Page 3434 of 4770

EM08A±04
A07356
A07357
P03267
P03268
P03149
EM±42
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
1214 Author: Date:
INSPECTION
1. CLE AN TO P SURFACE S OF PIS TO NS AND CY L-
INDER BLOCK
(a) Turn the crankshaft, and bring each piston to top dead
center (TDC). Using a gasket scraper, remove all the car-
bon from the piston top surface.
(b) Using a gasket scraper, remove all the gasket material
from the cylinder block surface.
(c) Using compressed air, blow carbon and oil from the bolt
holes.
CAUTION:
Protect your eyes when using high±pressure compressed
air.
2. INSPECT TOP SURFACE OF CYLINDER BLOCK FOR
FLATNESS (See page EM±97)
3. CLEAN CYLINDER HEAD
(a) Using a gasket scraper, remove all the gasket material
from the cylinder block contact surface.
NOTICE:
Be careful not to scratch the cylinder block contact sur-
face.
(b) Using a wire brush, remove all the carbon from the com-
bustion chamber.
NOTICE:
Be careful not to scratch the cylinder block contact sur-
face.
(c) Using a valve guide bushing brush and solvent, clean all
the guide bushings.
Page 3436 of 4770

Z02754
Z00052
Z00054
44.5°
EM0181
Margin Thickness EM±44
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
1216 Author: Date:
6. INSPECT VALVE STEMS AND GUIDE BUSHINGS
(a) Using a caliper gauge, measure the inside diameter of the
guide bushing.
Bushing inside diameter:
6.010 ± 6.030 mm (0.2366 ± 0.2374 in.)
(b) Using a micrometer, measure the diameter of the valve
stem.
Valve stem diameter:
Intake5.970 ± 5.985 mm (0.2350 ± 0.2356 in.)
Exhaust5.965 ± 5.980 mm (0.2348 ± 0.2354 in.)
(c) Subtract the valve stem diameter measurement from the
guide bushing inside diameter measurement.
Standard oil clearance:
Intake0.025 ± 0.060 mm (0.0010 ± 0.0024 in.)
Exhaust0.030 ± 0.065 mm (0.0012 ± 0.0026 in.)
Maximum oil clearance:
Intake0.08 mm (0.0031 in.)
Exhaust0.10 mm (0.0039 in.)
If the clearance is greater than maximum, replace the valve and
guide bushing. (See page EM±50)
7. INSPECT AND GRIND VALVES
(a) Grind the valve enough to remove pits and carbon.
(b) Check that the valve is ground to the correct valve face
angle.
Valve face angle: 44.5°
(c) Check the valve head margin thickness.
Standard margin thickness:
0.8 ± 1.2 mm (0.031 ± 0.047 in.)
Minimum margin thickness: 0.5 mm (0.020 in.)
If the margin thickness is less than minimum, replace the valve.
Page 3439 of 4770

EM0281
EM1628
EM2011
EM2538
EM3322
Free Distance
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
EM±47
1219 Author: Date:
(c) Using a spring tester, measure the tension of the valve
spring at the specified installed length.
Installed tension:
164 ± 189 N (16.7 ± 19.3 kgf, 36.8 ± 42.5 lbf)
at 34.7 mm (1.366 in.)
If the installed tension is not as specified, replace the valve
spring.
10. INSPECT CAMSHAFTS
(a) Inspect the circle runout.
(1) Place the camshaft on V±blocks.
(2) Using a dial indicator, measure the circle runout at
the center journal.
Maximum circle runout: 0.04 mm (0.0016 in.)
If the circle runout is greater than maximum, replace the cam-
shaft.
(b) Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
Intake42.01 ± 42.11 mm (1.6539 ± 1.6579 in.)
Exhaust40.06 ± 40.16 mm (1.5772 ± 1.5811 in.)
Minimum cam lobe height:
Intake41.90 mm (1.6496 in.)
Exhaust39.95 mm (1.5728 in.)
If the cam lobe height is less than minimum, replace the cam-
shaft.
(c) Using a micrometer, measure the journal diameter.
Journal diameter:
26.959 ± 26.975 mm (1.0614 ± 1.0620 in.)
If the journal diameter is not as specified, check the oil clear-
ance.
(d) Using vernier calipers, measure the free distance be-
tween the gear spring ends.
Free distance: 22.5 ± 22.9 mm (0.886 ± 0.902 in.)
If the free distance is not as specified, replace the gear spring.
Page 3440 of 4770

EM3371
Plastigage
P00259
EM3310
P00263
EM±48
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
1220 Author: Date:
(e) Inspect the journal oil clearance.
(1) Clean the bearing caps and camshaft journals.
(2) Check that bearings for flaking and scoring.
If the bearings are damaged, replace the bearing caps and cyl-
inder head as a set.
(3) Place the camshafts on the cylinder head.
(4) Lay a strip of Plastigage across each of the cam-
shaft journals.
(5) Install the bearing caps. (See page EM±53)
NOTICE:
Do not turn the camshaft.
(6) Remove the bearing caps.
(7) Measure the Plastigage at its widest point.
Standard oil clearance:
0.025 ± 0.062 mm (0.0010 ± 0.0024 in.)
Maximum oil clearance: 0.10 mm (0.0039 in.)
If the oil clearance is greater than maximum, replace the cam-
shaft. If necessary, replace the bearing caps and cylinder head
as a set.
(8) Completely remove the Plastigage.
(f) Inspect the camshaft thrust clearance.
(1) Install the camshaft. (See page EM±53)
(2) Using a dial indicator, measure the thrust clearance
while moving the camshaft back and forth.
Standard thrust clearance:
Intake0.045 ± 0.100 mm (0.0018 ± 0.0039 in.)
Exhaust0.030 ± 0.085 mm (0.0012 ± 0.0033 in.)
Maximum thrust clearance:
Intake0.12 mm (0.0047 in.)
Exhaust0.10 mm (0.0039 in.)
If the thrust clearance is greater than maximum, replace the
camshaft. If necessary, replace the bearing caps and cylinder
head as a set.
Page 3441 of 4770

EM3308
P03368
EM2196
S06013
S05606
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
EM±49
1221 Author: Date:
(g) Inspect the camshaft gear backlash.
(1) Install the camshafts without installing the exhaust
cam sub±gear. (See page EM±53)
(2) Using a dial indicator, measure the backlash.
Standard backlash:
0.020 ± 0.200 mm (0.0008 ± 0.0079 in.)
Maximum backlash: 0.30 mm (0.0188 in.)
If the backlash is greater then maximum, replace the cam-
shafts.
11. INSPECT VALVE LIFTERS AND LIFTER BORES
(a) Using a caliper gauge, measure the lifter bore diameter
of the cylinder head.
Lifter bore diameter:
31.000 ± 31.018 mm (1.2205 ± 1.2212 in.)
(b) Using a micrometer, measure the lifter diameter.
Lifter diameter:
30.966 ± 30.976 mm (1.2191 ± 1.2195 in.)
(c) Subtract the lifter diameter measurement from the lifter
bore diameter measurement.
Standard oil clearance:
0.024 ± 0.052 mm (0.0009 ± 0.0020 in.)
Maximum oil clearance: 0.07 mm (0.0028 in.)
If the oil clearance is greater than maximum, replace the lifter.
If necessary, replace the cylinder head.
12. INSPECT INTAKE MANIFOLD
Using a precision straight edge and feeler gauge, measure the
surface contacting the cylinder head for warpage.
Maximum warpage: 0.30 mm (0.0118 in.)
If warpage is greater than maximum, replace the manifold.
13. INSPECT EXHAUST MANIFOLD
Using a precision straight edge and feeler gauge, measure the
surface contacting the cylinder head for warpage.
Maximum warpage: 0.30 mm (0.0118 in.)
If warpage is greater than maximum, replace the manifold.
Page 3444 of 4770

EM0YM±01
P03274
SST
Z02903
Intake Exhaust
Gray
Black
P03265
SST
P03276
EM±52
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
1224 Author: Date:
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 VALVES
(a) Using SST, push in a new oil seal.
SST 09201±41020
HINT:
The intake valve oil seal is gray and the exhaust valve oil seal
is black.
(b) Install the valve, spring seat, valve spring and spring re-
tainer.
(c) Using SST, compress the valve spring and place the 2
keepers around the valve stem.
SST 09202±70020 (09202±00010)
(d) Using a plastic±faced hammer, lightly tap the valve stem
tip to assure a proper fit.
2. INSTALL VALVE LIFTERS AND SHIMS
(a) Install the valve lifter and shim.
(b) Check that the valve lifter rotates smoothly by hand.
3. INSTALL CAMSHAFT POSITION SENSOR AS-
SEMBLY
Install the sensor assembly with the bolt.
Torque: 9.5 N´m (97 kgf´cm, 84 in.´lbf)
Page 3445 of 4770

EM08D±04
A07355
Z02750
1
10 24 6 839
7 5
S01690
90°
Front
Painted
Mark90°
P03279
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
EM±53
1225 Author: Date:
INSTALLATION
1. PLACE CYLINDER HEAD ON CYLINDER BLOCK
(a) Place a new cylinder head gasket on the cylinder block.
NOTICE:
Be careful of the installation direction.
(b) Place the cylinder head on the cylinder head gasket.
2. INSTALL CYLINDER HEAD BOLTS
HINT:
The cylinder head bolts are tightened in 2 progressive
steps (steps (b) and (d)).
If any cylinder head bolt is broken or deformed, replace
it.
(a) Apply a light coat of engine oil on the threads and under
the heads of the cylinder head bolts.
(b) Install and uniformly tighten the 10 cylinder head bolts
and plate washers in several passes, in the sequence
shown.
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)
If any one of the cylinder head bolts does not meet the torque
specification, replace the cylinder head bolt.
(c) Mark the front of the cylinder head bolt head with paint.
(d) Retighten the cylinder head bolts 90° in the numerical or-
der shown.
(e) Check that the painted mark is now at a 90° angle to the
front.
(f) Install the 2 bolts holding the water bypass pipe to the cyl-
inder head.
Torque: 19 N´m (195 kgf´cm, 14 ft´lbf)
(g) Connect the camshaft position sensor connector.
3. INSTALL SPARK PLUG TUBES
(a) Clean the cylinder head tube holes of any residual adhe-
sive, oil or foreign particles. Remove any oil with kerosene
or gasoline.
(b) Screw the threads of the spark plug tube coated with
adhesive into the cylinder head.
(c) Using the spark plug tube nut and a 30 mm socket
wrench, tighten the spark plug tubes.
Torque: 49 N´m (500 kgf´cm, 36 ft´lbf)
Page 3447 of 4770

P03369
80 ±115°
Knock
Pin
EM3373
2 ± 3 mm
(0.08 ± 0.12 in.)
Seal
Packing
P03370
P03371
17
5
3
98
2
6
4
10
P03372
SST
± ENGINE MECHANICAL (5S±FE)CYLINDER HEAD
EM±55
1227 Author: Date:
(a) Install the intake camshaft.
(1) Apply MP grease to the thrust portion of the cam-
shaft.
(2) Place the intake camshaft at 80 ± 115° BTDC of
camshaft angle on the cylinder head.
HINT:
The above angle arrows the No.1 and No.3 cylinder cam lobes
of the intake camshaft to push their valve lifters evenly.
(3) Apply seal packing to the No.1 bearing cap as
shown.
Seal packing: Part No. 08826±00080 or equivalent
(4) Install the bearing caps in their proper locations.
(5) Apply a light coat of engine oil on the threads and
under the heads of the bearing cap bolts.
(6) Install and uniformly tighten the 10 bearing cap
bolts in several passes, in the sequence shown.
Torque: 19 N´m (190 kgf´cm, 14 ft´lbf)
(7) Apply MP grease to a new oil seal lip.
(8) Using SST and a hammer, tap in the oil seal.
SST 09223±46011