1986 TOYOTA CAMRY V20 engine

24. REMOVE WATER BY±PASS OUTLET
(a) Disconnect the following connectors and hose:
(1) Cold start injector time switch connector
(2) Water temperature sensor connector
(3) Heater water by±pass hose
(b) Remove the three nuts, water by±pass outlet and gasket.
(c) Remove the two bolts and crossover pipe heat insulator
from the water by±pass outlet.
25. REMOVE CYLINDER HEAD REAR PLATE
Remove the two bolts and rear plate.
27. REMOVE RH EXHAUST MANIFOLD
(a) Disconnect the oxygen sensor connector.
(b) Remove the three. nuts and outside heat insulator. 26. REMOVE INTAKE MANIFOLD
(a) Remove the two bolts and No.2 idler pulley bracket stay.
(b) Remove the eight bolts, four nuts, intake manifold and
two gaskets.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±78

31. REMOVE NO.3 TIMING BELT COVER
Remove the six bolts and timing belt cover.
NOTICE:
wSupport the belt so the meshing of the crankshaft
timing pulley and timing belt does not shift.
wBe careful not to drop anything inside the timing belt cover.
wDo not allow the belt to come into contact with oil, water or
dust. (b) Remove the six nuts, exhaust manifold and gasket.
29. REMOVE SPARK PLUGS (See page IG±11)
30. REMOVE TIMING BELT, CAMSHAFT TIMING
PULLEYS AND No.2 IDLER PULLEY
(See steps 3 to 19 on pages EM±34 to 37) 28. REMOVE LH EXHAUST MANIFOLD
(a) Remove the two nuts and heat insulator. (c) Remove the six nuts, exhaust manifold and gasket.
(d) Remove the bolt and inside heat insulator.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±79

(b) Secure the exhaust camshaft sub±gear to the driven
gear with a service bolt.
Recommended service bolt:
Thread diameter 6 mm
Thread pitch 1.0 mm
Bolt length 16 ± 20 mm (0.63 ± 0.79 in.)
HINT: When removing the camshaft, make certain that
the torsional spring force of the sub±gear has been
eliminated by the above operation. 32. REMOVE CYLINDER HEAD COVERS
Remove the six nuts, seal washers, cylinder head cover and
gasket. Remove the two cylinder head covers.
33. REMOVE SPARK PLUG TUBE GASKETS
Remove the six tube gaskets.
34. REMOVE CAMSHAFTS
NOTICE: Since the thrust clearance of the. camshaft is
small, the camshaft must be held level while it is being re-
moved. If the camshaft is not kept level, the portion of the
cylinder head receiving the shaft thrust may crack or be
damaged, causing the camshaft to seize or break. To avoid
this, the following steps should be carried out.
A. Remove exhaust camshaft of RH cylinder head
(a) Align the timing marks (two pointed marks) of the camshaft
drive and driven gears by turning the camshaft with a
wrench.
(c) Uniformly loosen and remove the eight bearing cap
bolts in several passes in the sequence shown.
(d) Remove the four bearing caps and exhaust camshaft.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±80

(b) Secure the exhaust camshaft sub±gear to the driven
gear with a service bolt.
Recommended service bolt:
Thread diameter 6 mm
Thread pitch 1.0 mm
Bolt length 16 ± 20 mm (0.63 ± 0.79 in.)
HINT: When removing the camshaft, make certain that
the torsional spring force of the sub±gear has been
eliminated by the above operation.
D. Remove intake camshaft of LH cylinder head
(a) Uniformly loosen and remove the ten bearing cap
bolts in several passes in the sequence shown.
(b) Remove the five bearing caps, oil seal and intake camshaft.B. Remove intake camshaft of RH cylinder head
(a) Uniformly loosen and remove the ten bearing cap
bolts in several passes in the sequence shown.
(b) Remove the five bearing caps, oil seal and intake camshaft.
C. Remove exhaust camshaft of LH cylinder head
(a) Align the timing marks (one pointed mark) of the camshaft
drive and driven gears by turning the camshaft with a
wrench.
(c) Uniformly loosen and remove the eight bearing cap
bolts in several passes in the sequence shown.
(d) Remove the four bearing caps and exhaust camshaft.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±81

(e) Remove the following parts:
(1) Wave washer
(2) Camshaft sub±gear
(3) Camshaft gear spring
HINT: Arrange the camshaft sub±gears and gear
springs (RH and LH). (b) Insert service bolt (A) into the service hole of the cam-
shaft sub±gear.
(c) Using a screwdriver, turn the sub±gear clockwise, and
remove the service bolt (B).
NOTICE: Be careful not to damage the camshaft.
35. DISASSEMBLE EXHAUST CAMSHAFTS
(a) Mount the hexagonal wrench head portion of the camshaft
in a vise.
NOTICE: Be careful not to damage the camshaft.
(d) Using snap ring pliers, remove the snap ring. HINT: Arrange the bearing caps incorrect order.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±82

(c) Lift the cylinder head from the dowels on the cylinder
block and place the heads on wooden blocks on a
bench.
HINT:
wIf the cylinder head is difficult to lift off, pry with a screw-
driver between the cylinder head and block.
wArrange the RH and LH cylinder heads.
NOTICE: Be careful not to damage the cylinder head
and cylinder block surfaces of cylinder head gasket
side.
(b) Uniformly loosen and remove the cylinder head (12±
sided) bolts in several passes in the sequence shown.
NOTICE: Head warpage or cracking could result from
removing bolts in incorrect order.
36. REMOVE CYLINDER HEADS
(a) Using a 8 mm hexagon wrench, remove the cylinder head
(recessed head) bolts.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±83

2. REMOVE VALVES
(a) Using SST, compress the valve spring and remove the two
keepers.
SST 09202±70010
(b) Remove the spring retainer, valve spring, valve and spring
seat.
DISASSEMBLY OF CYLINDER HEADS
(See page EM±75)
1 . REMOVE VALVE LIFTERS AND SHIMS
HINT: Arrange the valves, valve springs, spring seats
and spring retainers in correct order.
(c) Using needle±nose pliers, remove the oil seal. HINT: Arrange the valve lifters and shims in correct or-
der.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±84

INSPECTION, CLEANING AND REPAIR OF
CYLINDER HEAD COMPONENTS
1. CLEAN TOP OF PISTONS AND TOP OF BLOCK
(a) Turn the crankshaft and bring each piston to top dead center
(TDC). Using a gasket scraper, remove all the carbon from the
piston top.
(b) Remove all the gasket material from the top of the cylinder block.
(c) Using compressed air, blow carbon and oil from the bolt holes.
CAUTION: Protect your eyes when using high pressure
air.
2. REMOVE GASKET MATERIAL
Using a gasket scraper, remove all the gasket material from the
manifold and cylinder head surface.
NOTICE: Be careful not to scratch the surfaces.
3. CLEAN COMBUSTION CHAMBERS
Using a wire brush, remove all the carbon from the combus-
tion chambers.
NOTICE: Be careful not to scratch the head gasket contact
surface.
4. CLEAN VALVE GUIDE BUSHINGS
Using a valve guide bushing brush and solvent, clean all the
guide bushings.
5. CLEAN CYLINDER HEADS
Using a soft brush and solvent, thoroughly clean cylinder
heads.
± ENGINE MECHANICALCylinder Heads (2VZ±FE)EM±85