Mazda CX-7 2007 Workshop Manual page 398

DRIVE BELT AUTO TENSIONER INSPECTION[L3 WITH TC]
1. Remove the drive belt. (See01-10-3 DRIVE BELT REMOVAL/INSTALLATION[L3 WITH TC].)
2. Verify that the drive belt auto tensioner moves
smoothly in the operational direction.
• Replace the drive belt auto tensioner if
necessary.
3. Rotate 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. (See01-10-3 DRIVE BELT
REMOVAL/INSTALLATION[L3 WITH TC].)
End Of Sie
WM: ENGINE COMPLETE
VALVE CLEARANCE INSPECTION/ADJUSTMENT[L3 WITH TC]
Valve Clearance Inspection
1. Disconnect the negative battery cable.
2. Remove the splash shield (RH).
3. Remove the charge air cooler. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
4. Remove the high pressure fuel pump. (See01-14-16 HIGH PRESSURE FUEL PUMP REMOVAL/
INSTALLATION[L3 WITH TC].)
5. Remove the ignition coils. (See01-18-2 IGNITION COIL REMOVAL/INSTALLATION[L3 WITH TC].)
6. Disconnect the wiring harness.
7. Remove the ventilation hose.
8. Remove the cylinder head cover. (See01-10-10 TIMING CHAIN REMOVAL/INSTALLATION[L3 WITH TC].)
9. Measure the valve clearance.
(1) Rotate the crankshaft clockwise so that the No.1 cylinder is at TDC of the compression stroke.
(2) Measure the valve clearance of location A
shown in the figure.
Standard valve clearance [Engine cold]
IN: 0.22— 0.28 mm {0.0087— 0.011 in}
EX: 0.27— 0.33 mm {0.011— 0.012 in}
(3) If it is not within the specification, replace the
tappet and adjust the valve clearance to the
median value of the standard.
Note
• Make sure to note down the measured
values for choosing the suitable replacement
tappets.
(4) Rotate the crankshaft clockwise 360° so that the No.4 cylinder is at TDC of the compression stroke.
(5) Measure the valve clearance of location B shown in the figure.
Standard valve clearance [Engine cold]
IN: 0.22— 0.28 mm {0.0087— 0.011 in}
EX: 0.27— 0.33 mm {0.011— 0.012 in}
(6) If not within the specification, replace the tappet and adjust the valve clearance to the median value of the
standard.
10. Install the cylinder head cover. (See01-10-10 TIMING CHAIN REMOVAL/INSTALLATION[L3 WITH TC].)
11. Install the ventilation hose.
12. Connect the wiring harness.
13. Install the ignition coils. (See01-18-2 IGNITION COIL REMOVAL/INSTALLATION[L3 WITH TC].)
14. Install the high pressure fuel pump. (See01-14-16 HIGH PRESSURE FUEL PUMP REMOVAL/
INSTALLATION[L3 WITH TC].)
15. Install the charge air cooler. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
16. Install the splash shield (RH).
17. Connect the negative battery cable.
01-10–4
MECHANICAL [L3 WITH TC]
DRIVE BELT
AUTO TENSIONER
A B A
EX
No.1 No.2 No.3
IN
A A B
id011039801700
acxuuw00000137
id011039800200
B
No.4
B
acxuuw00000156