Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 1052 / 1976

P18805
EM0B0-03
A05273
RH EX
RH IN
LH IN
LH EX
3 3
1 1
2 2
6 6
Front
EM-4
- ENGINE MECHANICAL VALVE CLEARANCE
947
Author: Date:
2001 SIENNA (RM787U)
VALVE CLEARANCE
INSPECTION
HINT:
Inspect and adjust the valve clearance when the engine is cold.
1.
REMOVE OUTER FR COWL TOP PANEL ASSEMBLY
(See page
EM-76 )
2. REMOVE RH FENDER APRON SEAL
3. DRAIN ENGINE COOLANT
4. REMOVE V-BANK COVER
(a) Using a 5 mm hexagon wrench, remove the 2 nuts.
(b) Disconnect the 2 clips, and remove the cover.
5. REMOVE AIR INTAKE CHAMBER ASSEMBLY (See
page
EM-33 )
6. REMOVE IGNITION COILS
7. DISCONNECT RADIATOR HOSE FROM WATER OUT-
LET
8. REMOVE CYLINDER HEAD COVERS (See page
EM-33 )
9. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley, and align its groove with the
timing mark ”0” of the No.1 timing belt cover.
(b) Check that the valve lifters on the No.1 (IN and EX) are
loose.
If not, turn the crankshaft 1 revolution (360
°
) and align the mark
as above.
10. INSPECT VALVE CLEARANCE
(a) Check only those valves indicated in the illustration.
Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
Record out of specification valve clearance mea-
surements. They will be used later to determine the
required replacement adjusting shim.
Valve clearance (Cold):
Intake: 0.15 - 0.25 mm (0.006 - 0.010 in.)
Exhaust 0.25 - 0.35 mm (0.010 - 0.014 in.)