Variable Valve Timing Actuator Component Installation Note

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Identify the variable valve timing actuator as shown in the figure.

Fig 1: Identifying Variable Valve Timing Actuator
Courtesy of MAZDA MOTORS CORP.

Align the alignment marks on the camshaft timing chain and both intake and exhaust side camshaft sprockets of both banks.

Fig 2: Aligning Alignment Marks On Camshaft Timing Chain (RH)

Courtesy of MAZDA MOTORS CORP.

Install the variable valve timing actuator, camshaft timing chain and the exhaust camshaft sprocket of the RH bank as a single unit.

Fig 3: Aligning Alignment Marks On Camshaft Timing Chain (LH)

Courtesy of MAZDA MOTORS CORP.

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

Fig 4: Identifying Retaining Wire To Camshaft Timing Chain Tensioner (RH)
Courtesy of MAZDA MOTORS CORP.
CAUTION:
- Always use an appropriate tool (TORX or TORX PLUS). If the appropriate tool is not used, it could result in damage to the bolts or the tools.

Tool size

TORX: T55

TORX PLUS: 55IP

Tighten the new camshaft sprocket (RH) bolts using the appropriate tools 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 5: Identifying TORX & TORX PLUS
  Courtesy of MAZDA MOTORS CORP.
Install the variable valve timing actuator, camshaft timing chain and the exhaust camshaft sprocket of the LH bank as a single unit.
Remove the retaining wire inserted into the camshaft timing chain tensioner (LH).

Fig 6: Identifying Retaining Wire To Camshaft Timing Chain Tensioner (LH)

Courtesy of MAZDA MOTORS CORP.

Tighten the new camshaft sprocket (LH) bolts using the appropriate tools 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 °.
Turn the crankshaft clockwise so that the crankshaft keyway is in the 11 o'clock position (This will position the No. 1 cylinder at TDC)

Fig 7: Identifying Crankshaft Keyway At 11 O'Clock Position

Courtesy of MAZDA MOTORS CORP.

Follow the "TIMING CHAIN REMOVAL/INSTALLATION" procedure and install the timing chain. (See TIMING CHAIN REMOVAL/INSTALLATION [MZI-3.7] .)