Mazda 6 2002, Руководство по ремонту

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B–4
DRIVE BELT, VALVE CLEARANCE
DRIVE BELT AUTO TENSIONER INSPECTION
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1. Remove the drive belt. (See B–3 DRIVE BELT REPLACEMENT .)
2. Verify that the drive belt auto tensioner moves
smoothly in the operational direction.
•
Replace the drive belt auto tensioner if
necessary.
3. Turn the drive belt auto tensioner pulley by hand
and verify that it rotates smoothly.
•
Replace the drive belt auto tensioner if
necessary.
4. Install the drive belt. (See B–3 DRIVE BELT
REPLACEMENT .)
End Of Sie
VALVE CLEARANCE INSPECTION
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1. Disconnect the negative battery cable.
2. Remove the tire (RH).
3. Remove the splash shield (RH).
4. Remove the spark plugs. (See
G–10 SPARK PLUG REMOVAL/INSTALLATION .)
5. Remove the oil control valve (OCV) connector.
6. Remove the ventilation hose.
7. Remove the cylinder head cover.
8. Verify that the engine is in cold condition.
9. Measure the valve clearance.
(1) Turn the crankshaft clockwise so that the No.1 piston is at TDC of the compression stroke.
(2) Measure the valve clearance at A in the
figure.
•
If the valve clearance exceeds the space
the tappet. (See
B–5 VALVE
CLEARANCE ADJUSTMENT .)
Note
•
Make sure to note the measured values for
choosing the suitable replacement tappets.
Standard [Engine cold]
IN: 0.22—0.28 mm {0.0087—0.0110 in}
(0.25
±
0.03 mm {0.0098
±
0.0011 in})
EX: 0.27—0.33 mm {0.0106—0.0130 in}
(0.30
±
0.03 mm {0.0118
±
0.0011 in})
(3) Turn the crankshaft 360
°
clockwise so that the No.4 piston is at TDC of the compression stroke.
(4) Measure the valve clearance at B in the figure.
•
If the valve clearance exceeds the standard, replace the tappet. (See B–5 VALVE CLEARANCE
ADJUSTMENT .)
Note
•
Make sure to note the measured values for choosing the suitable replacement tappets.
Standard [Engine cold]
IN: 0.22—0.28 mm {0.0087—0.0110 in} (0.25
±
0.03 mm {0.0098
±
0.0011 in})
EX: 0.27—0.33 mm {0.0106—0.0130 in} (0.30
±
0.03 mm {0.0118
±
0.0011 in})
10. Install the cylinder head cover. (See B–17 Cylinder Head Cover Installation Note .)
11. Install the ventilation hose.
12. Install the oil control valve connector.
13. Install the high-tension lead. (See
G–10–1 HIGH-TENSION LEAD REMOVAL/INSTALLATION .)
14. Install the spark plugs. (See G–10 SPARK PLUG REMOVAL/INSTALLATION .)
15. Install the splash shield (RH).
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VALVE CLEARANCE
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