Page 87 of 4770
13. INSTALL NO.2 TIMING BELT COVER
(a) Install the 2 gaskets to the No. 1 and No.2 belt covers.
(b) install the belt cover with the 5 bolts.
(c) Align the 2 clamps of the engine wire with cover
mounting bolts. (d) w/ Green Tension Spring:
Slowly turn the crankshaft pulley 1 and 7/8 revolu±
tions, and align its groove with the mark at 45 BTDC
(for No.1 cylinder) of the No.1 timing belt cover.
NOTICE: Always turn the crankshaft clockwise.
(c) Check that each pulley aligns with the timing marks as
shown in the illustration..
If the timing marks do not align, remove the timing
belt and reinstall it. (b) Turn the crankshaft pulley 2 revolutions from TDC to
TDC.
NOTICE: Always turn the crankshaft clockwise.
(e) Torque the mounting bolt of the No.1 idler pulley.
Torque: 42 N±m (425 kgf±cm, 31 ft±lbf)
± 5S±FE ENGINEENGINE MECHANICALEG1±37
Page 106 of 4770
3. INSPECT CYLINDER HEAD
A. Inspect for flatness
Using a precision straight edge and thickness gauge,
measure the surfaces contacting the cylinder block
and the manifolds for warpage.
Maximum warpage:
Cylinder block side
0.05 mm (0.0020 in.)
Manifold side
0.08 mm (0.0031 in.)
If warpage is greater than maximum, replace the cylin±
der head.
B. Inspect for cracks
Using a dye penetrant, check the combustion cham±
bers, intake ports, exhaust ports and cylinder block
surface for cracks.
If cracked, replace the cylinder head. D. Clean cylinder head
Using a soft brush and solvent, thoroughly clean the
cylinder head. C. Clean valve guide bushings
Using a valve guide bushing brush and solvent, clean
all the guide bushings.
± 5S±FE ENGINEENGINE MECHANICALEG1±56
Page 109 of 4770
(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. 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 (g) Using SST and a hammer, tap in a new guide bushing
until the snap ring makes contact with the cylinder
head.
SST 09201± 70010
(h) Using a sharp6 mm reamer, ream the guide bushing
to obtain the standard specified clearance (See page
EG1±57) between the guide bushing and valve stem. (f) Gradually heat the cylinder head to 80 ±100 C (117 ±
212F).
± 5S±FE ENGINEENGINE MECHANICALEG1±59
Page 110 of 4770
(d) Check the valve overall length.
Standard overall length:
Intake
97.60 mm (3.8425 in.)
Exhaust
98.45 mm (3.8760 in.)
Minimum overall length:
Intake
97.1 mm (3.823 in.)
Exhaust
98.0 mm (3.858 in.)
If the overall length is less than minimum, replace the
valve.
(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. (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.
8. INSPECT AND CLEAN VALVE SEATS
(a) Using a 45 carbide cutter, resurface the valve seats.
Remove only enough metal to clean the seats.
± 5S±FE ENGINEENGINE MECHANICALEG1±60
Page 111 of 4770

wIf blue appears 360 around the valve seat, the
guide and face are concentric. If not, resurface
the seat.
wCheck that the seat contact is in the middle of the
valve face with the following width:
1.0 ± 1.4 mm (0.039 ± 0.055 in.)
If not, correct the valve seat as follows:
(1) If the seating is too high on the valve face, use
30 and 45 cutters to correct the seat.
(2) If the seating is too low on the valve face, use
75 and 45 cutters to correct the seat.
9. INSPECT VALVE SPRINGS
(a) Using a steel square, measure the deviation of the
valve spring.
Maximum deviation:
2.0 mm (0.079 in.)
If the deviation is greater than maximum, replace the
valve spring.
(b) Using a vernier caliper, measure the free length of the
valve spring.
Free length:
41.96 ± 41.99 mm (1.6520 ± 1.6531 in.)
If the free length is not as specified, replace the valve
spring. (d) Hand±lap the valve and valve seat with an abrasive
compound.
(e) After hand±lapping, clean the valve and valve seat.
± 5S±FE ENGINEENGINE MECHANICALEG1±61
Page 112 of 4770

B. Inspect cam lobes
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
Intake
42.01 ± 42.11 mm (1.6539 ± 1.6579 in.)
Exhaust
40.06 ± 40.18 mm (1.5772 ± 1.5811 In.)
Minimum cam lobe height:
Intake
41.90 mm (1.6496 in.)
Exhaust
39.95 mm (1.5728 in.)
If the cam lobe height is less than minimum, replace
the camshaft. 10. INSPECT CAMSHAFTS AND BEARINGS
A. Inspect camshaft for runout
(a) Place the camshaft on V ± blocks.
(b) 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 camshaft.(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 (1.336 in.)
If the installed tension is not as specified, replace the
valve spring.
C. Inspect camshaft journals
Using a micrometer, measure the journal diameter.
Journal diameter:
26.959 ± 28.975 mm 11.0814 ± 1.0620 in.)
If the journal diameter is not as specified, check the oil
clearance.
± 5S±FE ENGINEENGINE MECHANICALEG1±62
Page 113 of 4770
E. Inspect camshaft gear spring
Using a vernier caliper, measure the free distance
between the 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.
F. Inspect camshaft journal oil clearance
(a) Clean the bearing caps and camshaft journals.
(b) Place the camshafts on the cylinder head.
(c) Lay a strip of Plastigage across each of the camshaft
journals. D. Inspect camshaft bearings
Check that bearings for flaking and scoring.
If the bearings are damaged, replace the bearing caps
and cylinder head as a set.
(d) Install the bearing caps.
(See step 4 on pages EG1±69 to 71)
Torque: 19 N±m (190 kgf±cm, 14 ft±lbf)
NOTICE: Do not turn the camshaft.
(e) Remove the bearing caps.
± 5S±FE ENGINEENGINE MECHANICALEG1±63
Page 117 of 4770

CYLINDER HEAD INSTALLATION
(See Components for Removal and Installation)
1. INSTALL CYLINDER HEAD
A. Place cylinder head on cylinder block
(a) Place a new cylinder head gasket in position on the
cylinder block.
NOTICE: Be careful of the installation direction.
(b) Place the cylinder head in position on the cylinder
head gasket.
B. Install cylinder head bolts
HINT:
wThe cylinder head bolts are tightened in 2 progressive
steps (steps (b) and (d)).
wIf any cylinder head bolt is broken or deformed, re±
place it.
(a) Apply a light coat of engine oil on the threads and
under the heads of the cylinder head bolts.
(b) Using SST, install and uniformly tighten the 10 cylin±
der head bolts and plate washers in several passes, in
the sequence shown.
SST 09011± 38121
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.2. INSTALL VALVE LIFTERS AND SHIMS
(a) Install the valve lifter and shim.
(b) Check that the valve lifter rotates smoothly by hand. (d) Using a plastic±faced hammer, lightly tap the valve
stem tip to assure proper fit.
± 5S±FE ENGINEENGINE MECHANICALEG1±67