Toyota Corolla 2004 Repair Manual - VALVE CLEARANCE
VALVE CLEARANCE
ADJUSTMENT
14–5
–ENGINE MECHANICAL VALVE CLEARANCE
140OE–01
1. REMOVE CYLINDER HEAD COVER NO.2
(a) Remove the 2 nuts, 2 clips and cylinder head cover.
A65077
2. DISCONNECT ENGINE WIRE
(a) Remove the 5 clamps from the 5 clamp brackets.
A64021
A64022
(b) Disconnect the 4 ignition coil connectors.
(c) Remove the bolt and nut installing the engine wire.
3. REMOVE IGNITION COIL ASSY
(a) Remove the 4 bolts and 4 ignition coils.
2004 COROLLA (RM1037U)
A64023
1015Author: Date:
14–6
–ENGINE MECHANICAL VALVE CLEARANCE
4. DISCONNECT VENTILATION HOSE
(a) Disconnect the ventilation hose from the cylinder head
cover.
A65078
5. DISCONNECT VENTILATION HOSE NO.2
(a) Disconnect the ventilation hose from the cylinder head
cover.
A64058
6. REMOVE CYLINDER HEAD COVER SUB–ASSY
(a) Remove the 9 bolts, 2 seal washers, 2 nuts, 3 clamp
A64856
7. REMOVE ENGINE UNDER COVER RH
brackets and cylinder head cover.
2004 COROLLA (RM1037U)
1016Author: Date:
Mark
Mark
Mark
Timing Chain
Cover Surface
14–7
–ENGINE MECHANICAL VALVE CLEARANCE
8. SET NO. 1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with timing
mark ”0” of the timing chain cover.
(b) Check that the p o i n t m arks of the camshaft timing sprock-
et and VVT timing sprocket are in straight line on the tim-
ing chain cover surface as shown in the illustration.
HINT:
If not, turn the crankshaft 1 revolution (360) and align the
marks as above.
Groove
A62185
A01131
A01132
9. INSPECT VALVE CLEARANCE
(a) Check only the valves indicated.
(1) Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
(2) Record the out–of specification valve clearance
measurements. They will be used later to determine
the required replacement valve lifter.
Valve clearance (Cold):
Intake 0.15 – 0.25 mm (0.0059 – 0.0098 in.)
Exhaust 0.25 – 0.35 mm (0.0098 – 0.0138 in.)
(b) Turn the crankshaft 1 revolution (360 ) and set No. 4 cyl-
inder to TDC/compression.
(c) Check only the valves indicated.
(1) Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
(2) Record the out–of specification valve clearance
measurements. They will be used later to determine
the required replacement valve lifter.
Valve clearance (Cold):
Intake 0.15 – 0.25 mm (0.0059 – 0.0098 in.)
Exhaust 0.25 – 0.35 mm (0.0098 – 0.0138 in.)
2004 COROLLA (RM1037U)
1017Author: Date:
14–8
–ENGINE MECHANICAL VALVE CLEARANCE
10. REMOVE FAN AND GENERATOR V BELT
(a) Turn the V–ribbed belt tensioner slowly clockwise and
loosen it. Then, remove the fan and generator V belt and
put back the V–ribbed belt tensioner little by little and fix
it quietly.
A60622
11. REMOVE ENGINE MOUNTING INSULATOR
SUB–ASSY RH
(a) Remove the PS oil pump reservoir and put it aside.
(b) Place a wooden block between the jack and engine, and
set the jack, then remove the 4 bolts, the 2 nuts and en-
gine mounting insulator RH.
A01045
A64005
A11858
12. REMOVE V–RIBBED BELT TENSIONER ASSY
(a) Remove the bolt, nut and V–ribbed belt tensioner.
HINT:
Handle a jack up and down to remove the bolt.
Paint Mark
2004 COROLLA (RM1037U)
13. ADJUST VALVE CLEARANCE
NOTICE:
Be sure not to revolve the crankshaft without the chain tensioner.
(a) Set the No. 1 cylinder to the TDC/compression.
(b) Place match marks on the timing chain and camshaft tim-
ing sprockets.
A62186
1018Author: Date:
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