Mazda CX-9 Grand Touring. Manual — part 359

Fig. 29: Locating Alignment Marks On Camshaft Timing Chain (LH)
Courtesy of MAZDA MOTORS CORP.

3. Remove the retaining wire inserted into the camshaft timing chain tensioner (RH).

4. Tighten the new camshaft sprocket (RH) installation bolts using the following 4 steps.

1. Tighten to 40 N.m {4.1 kgf.m, 30 ft.lbf}.

2. Loosen 360 ° (one full turn) in reverse order.

3. Tighten to 10 N.m {102 kgf.cm, 89 in.lbf}.

4. Tighten to 90 °

5. Install the variable valve timing actuator, camshaft timing chain and the exhaust camshaft sprocket of the

LH bank as a single unit.

Fig. 30: Locating Retaining Wire Into Camshaft Timing Chain Tensioner
Courtesy of MAZDA MOTORS CORP.

6. Remove the retaining wire inserted into the camshaft timing chain tensioner (LH).

2008 Mazda CX-9 Grand Touring

2008 ENGINE Mechanical (MZI-3.7) - Mazda CX-9

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7. Tighten the new camshaft sprocket (LH) installation bolts using the following 4 steps.

1. Tighten to 40 N.m {4.1 kgf.m, 30 ft.lbf}.

2. Loosen 360 ° (one full turn) in reverse order.

3. Tighten to 10 N.m {102 kgf.cm, 89 in.lbf}.

4. Tighten to 90 °

Fig. 31: Locating Retaining Wire Into Camshaft Timing Chain Tensioner
Courtesy of MAZDA MOTORS CORP.

8. Rotate the crankshaft clockwise until the keyway is in the 11 o'clock position. (This will position the No.1

cylinder at TDC.)

9. Follow the "TIMING CHAIN REMOVAL/INSTALLATION" procedure and install the timing chain.

(See TIMING CHAIN REMOVAL/INSTALLATION [MZI-3.7].)

10. Remove the SSTs installed to the camshaft components on both banks.

Fig. 32: Rotating Crankshaft Clockwise
Courtesy of MAZDA MOTORS CORP.

OIL CONTROL VALVE (OCV) INSPECTION [MZI-3.7]

COIL RESISTANCE INSPECTION

1. Disconnect the negative battery cable.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Mechanical (MZI-3.7) - Mazda CX-9

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2. Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [MZI-3.7].)

3. Disconnect the OCV connector.

4. Measure the coil resistance between terminals A and B using a tester.



If it is not within the specification, replace the OCV.

Oil control valve resistance 5-14 ohms

5. Install in the reverse order of removal.

Fig. 33: Locating OCV Connector
Courtesy of MAZDA MOTORS CORP.

SPOOL VALVE OPERATION INSPECTION

1. Disconnect the negative battery cable.

2. Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [MZI-3.7].)

3. Verify that the spool valve in the OCV is in the maximum valve timing retard position as indicated in the

figure.



If not as specified, replace the OCV.

4. Verify that the battery is fully charged.



If not as specified, recharge the battery.

Fig. 34: Identifying Maximum Valve Timing Retard Position (Spool Valve)
Courtesy of MAZDA MOTORS CORP.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Mechanical (MZI-3.7) - Mazda CX-9

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Sunday, November 15, 2009 10:01:57 AM

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5. Apply battery positive voltage between the OCV terminals and verify that the spool valve operates and

moves to the maximum valve timing advance position.

Fig. 35: Locating OCV Connector
Courtesy of MAZDA MOTORS CORP.



If not as specified, replace the OCV.

6. Stop applying battery positive voltage and verify that the spool valve returns to the maximum valve

timing retard position.



If not as specified, replace the OCV. (See OIL CONTROL VALVE (OCV)
REMOVAL/INSTALLATION [MZI-3.7].)

7. Install in the reverse order of removal.

NOTE:



When applying battery positive voltage between the OCV terminals,
the connection can be either of the following:



Positive battery cable to terminal A, Negative battery cable to
terminal B



Positive battery cable to terminal B, Negative battery cable to
terminal A

Fig. 36: Identifying Maximum Valve Timing Advance Position
(Spool Valve)
Courtesy of MAZDA MOTORS CORP.

2008 Mazda CX-9 Grand Touring

2008 ENGINE Mechanical (MZI-3.7) - Mazda CX-9

Microsoft

Sunday, November 15, 2009 10:01:57 AM

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© 2005 Mitchell Repair Information Company, LLC.