TOYOTA CAMRY 2000 Service Repair Manual

P12754
Z00052
Z00054
44.5°
EM0181
Margin Thickness
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
EM±45
1331 Author: Date:
9. INSPECT VALVE STEMS AND GUIDE BUSHINGS
(a) Using a caliper gauge, measure the inside diameter of the
guide bushing.
Bushing inside diameter:
5.510 ± 5.530 mm (0.2169 ± 0.2177 in.)
(b) Using a micrometer, measure the diameter of the valve
stem.
Valve stem diameter:
Intake5.470 ± 5.485 mm (0.2154 ± 0.2159 in.)
Exhaust5.465 ± 5.480 mm (0.2152 ± 0.2157 in.)
(c) Subtract the valve stem diameter measurement from the
guide bushing guide bushing inside diameter measure-
ment.
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.
10. 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: 1.0 mm (0.039 in.)
Minimum margin thickness: 0.5 mm (0.020 in.)
If the margin thickness is less than minimum, replace the valve.

EM2534
Overall Length
EM0255
P12704
P12729
Width
Z03988
45°
1.0 ± 1.4 mm30° EM±46
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
1332 Author: Date:
(d) Check the valve overall length.
Standard overall length:
Intake95.45 mm (3.5779 in.)
Exhaust95.40 mm (3.7559 in.)
Minimum overall length:
Intake94.95 mm (3.7382 in.)
Exhaust94.90 mm (3.7362 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.
11. 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 the following width:
1.0 ± 1.4 mm (0.039 ± 0.055 in.)
If not, correct the valve seats as follows:
(1) If the seating is too high on the valve face, use 30°
and 45° cutters to correct the seat.

Z03989
45°
1.0 ± 1.4 mm75°
P12705
EM0988
Deviation
EM0801
EM0281
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
EM±47
1333 Author: Date:
(2) If the seating is too low on the valve face, use 75°
and 45° cutters to correct the seat.
(d) Hand±lap the valve and valve seat with an abrasive com-
pound.
(e) After hand±lapping, clean the valve and valve seat.
12. 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 vernier calipers, measure the free length of the
valve spring.
Free length: 45.50 mm (1.7913 in.)
If the free length is not as specified, replace the valve spring.
(c) Using a spring tester, measure the tension of the valve
spring at the specified installed length.
Installed tension:
186 ± 206 N (19.0 ± 21.0 kgf, 41.9 ± 46.3 lbf)
at 33.8 mm (1.331 in.)
If the installed tension is not as specified, replace the valve
spring.

EM1628
EM2011
EM2538
A05236
EM±48
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
1334 Author: Date:
13. 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: 0.06 mm (0.0024 in.)
If the circle runout is greater than maximum, replace the cam-
shaft.
14. INSPECT CAM LOBES
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
Intake42.11 ± 42.21 mm (1.6579 ± 1.6618 in.)
Exhaust41.96 ± 42.06 mm (1.6520 ± 1.6559 in.)
Minimum cam lobe height:
Intake41.96 mm (1.6520 in.)
Exhaust41.81 mm (1.6461 in.)
If the cam lobe height is less than minimum, replace the cam-
shaft.
15. INSPECT CAMSHAFT JOURNALS
Using a micrometer, measure the journal diameter.
Journal diameter:
Intake26.949 ± 26.965 mm (1.0610 ± 1.0616 in.)
Exhaust26.959 ± 26.975 mm (1.0613 ± 1.0620 in.)
If the journal diameter is not as specified, check the oil clear-
ance.
16. INSPECT CAMSHAFT BEARINGS
Check that bearings for flaking and scoring.
If the bearings are damaged, replace the bearing caps and cyl-
inder head as a set.

P13009
Plastigage
P12892
P13004
P12891
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
EM±49
1335 Author: Date:
17. 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 jour-
nal.
(d) Install the bearing caps. (See page EM±57)
Torque: 16 N´m (160 kgf´cm, 12 ft´lbf)
NOTICE:
Do not turn the camshaft.
(e) Remove the bearing caps.
(f) Measure the Plastigage at its widest point.
Standard oil clearance:
Intake0.035 ± 0.072 mm (0.0014 ± 0.0028 in.)
Exhaust0.025 ± 0.062 mm (0.0010 ± 0.0024 in.)
Maximum oil clearance:
Intake0.10 mm (0.0039 in.)
Exhaust0.09 mm (0.0035 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.
(g) Completely remove the Plastigage.
(h) Remove the camshafts.
18. INSPECT CAMSHAFT THRUST CLEARANCE
(a) Install the camshafts. (See page EM±57)
(b) Using a dial indicator, measure the thrust clearance while
moving the camshaft back and forth.
Standard thrust clearance:
0.040 ± 0.090 mm (0.0016 ± 0.0035 in.)
Maximum thrust clearance: 0.12 mm (0.0047 in.)
If the thrust clearance is greater than maximum, replace the
camshaft. If necessary, replace the bearing caps and cylinder
head as a set.

P12960
EM3322
Free Distance
P12685
EM6368
EM±50
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
1336 Author: Date:
(c) Remove the camshafts.
19. INSPECT CAMSHAFT GEAR BACKLASH
(a) Install the camshafts without installing the exhaust cam
sub±gear. (See page EM±57)
(b) 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.
(c) Remove the camshafts.
20. INSPECT CAMSHAFT GEAR SPRING
Using vernier calipers, measure the free distance between the
spring ends.
Free distance: 18.2 ± 18.8 mm (0.712 ± 0.740 in.)
If the free distance is not as specified, replace the gear spring.
21. 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 ± 0.050 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.

P12400
Z09167
Cylinder Head Side
Air Intake Chamber Side
Z09168
RH Side
LH Side
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
EM±51
1337 Author: Date:
22. INSPECT AIR INTAKE CHAMBER
Using a precision straight edge and feeler gauge, measure the
surface contacting the intake manifold for warpage.
Maximum warpage: 0.10 mm (0.0039 in.)
If warpage is greater than maximum, replace the chamber.
23. INSPECT INTAKE MANIFOLD
Using a precision straight edge and feeler gauge, measure the
surface contacting the cylinder head and air intake chamber for
warpage.
Maximum warpage:
Air intake chamber side0.15 mm (0.0059 in.)
Cylinder head side0.08 mm (0.0031 in.)
If warpage is greater than maximum, replace the manifold.
24. INSPECT EXHAUST MANIFOLDS
Using a precision straight edge and feeler gauge, measure the
surface contacting the cylinder head for warpage.
Maximum warpage: 0.50 mm (0.0196 in.)
If warpage is greater than maximum, replace the manifold.

P12496
EM±52
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
1338 Author: Date:
25. INSPECT 12 POINTED HEAD CYLINDER HEAD
BOLTS
Using vernier calipers, measure the tension portion diameter of
the bolt.
Standard outside diameter:
8.95 ± 9.05 mm (0.3524 ± 0.3563 in.)
Minimum outside diameter: 8.75 mm (0.3445 in.)
If the diameter is less than minimum, replace the bolt.

EM0YQ±01
P12688
80 ± 100°C
P12803
SST
P12956
Bushing sizeBushing bore diameter
mm (in.)
10.295 ± 10.313
(0.4053 ± 0.4060)Both intake and exhaust
Use STD
10.345 ± 10.363
(0.4073 ± 0.4080)Use O/S 0.05
P11510
34.5 mm
(1.358 in.) Intake Exhaust
40.5 mm
(1.594 in.)
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
EM±53
1339 Author: Date:
REPLACEMENT
1. REPLACE VALVE GUIDE BUSHINGS
(a) Gradually heat the cylinder head to 80 ± 100°C (176 ±
212°F).
(b) Using SST and a hammer, tap out the guide bushing.
SST 09201±01055, 09950±70010 (09951±07100)
(c) Using a caliper gauge, measure the bushing bore diame-
ter of the cylinder head.
(d) Select a new guide bushing (STD or O/S 0.05).
If the bushing bore diameter of the cylinder head is greater than
10.313 mm (0.4060 in.), machine the bushing bore to the fol-
lowing dimension:
10.345 ± 10.363 mm (0.4073 ± 0.4080 in.)
If the bushing bore diameter of the cylinder head is greater than
10.363 mm (0.4080 in.), replace the cylinder head.
HINT:
Different bushings are used for the intake and exhaust.
(e) Gradually heat the cylinder head to 80 ± 100°C (176 ±
212°F).

P12802
SST
Z09124
P13235
P13236
P13224
SST EM±54
± ENGINE MECHANICAL (1MZ±FE)CYLINDER HEAD
1340 Author: Date:
(f) Using SST and a hammer, tap in a new guide bushing to
the specified protrusion height.
SST 09201±01055, 09950±70010 (09951±07100)
Protrusion height:
Intake11.1 ± 11.3 mm (0.437 ± 0.453 in.)
Exhaust8.9 ± 9.3 mm ± (0.350 ± 0.366 in.)
(g) Using a sharp 5.5 mm reamer, ream the guide bushing to
obtain the standard specified clearance (See page
EM±43) between the guide bushing and valve stem.
2. REPLACE SPARK PLUG TUBE GASKETS
(a) Bend up the tab on the ventilation baffle plate which pre-
vents the gasket from the slipping out.
(b) Using a screwdriver and hammer, tap out the gasket.
(c) Using needle±nose pliers, pry out the gasket.
(d) Using SST and a hammer, tap in a new gasket until its sur-
face is flush with the upper edge of the cylinder head cov-
er.
SST 09608±03071
(e) Apply a light coat of MP grease to the gasket lip.
(f) Return the ventilation plate tab to its original position.