Timing Chain Installation Note

Verify that the timing marks and the key are aligned to the position shown in the figure.

Fig 1: Timing Chain Alignment Mark
Courtesy of MAZDA MOTORS CORP.
NOTE:
- The timing mark of SKYACTIV-G 2.5T is not parallel with the upper surface of the cylinder head.
- If the timing marks and key position have deviated, align them to the positions shown in the figure.
Install the timing chain while aligning the marks on the timing chain as shown in the figure.

Fig 2: Timing Chain Alignment Mark
Courtesy of MAZDA MOTORS CORP.
Install the chain guide (No. 1).
Tightening torque

8-11 N.m {82-112 kgf.cm, 71-97 in.lbf}
Install the tensioner arm.
Install the chain tensioner.
Tightening torque

8-11 N.m {82-112 kgf.cm, 71-97 in.lbf}
After installing the chain tensioner, remove the installed wire or paper clip, and then apply tension to the timing chain. (Chain tensioner type A)
- If a new chain tensioner is used, remove the installed stopper.
Fig 3: Stopper And Link Plate
Courtesy of MAZDA MOTORS CORP.
After installing the timing chain tensioner, remove the installed rod, and then apply tension to the timing chain. (Chain tensioner type B)
- If a new chain tensioner is used, remove the installed lock pin.
Fig 4: Lock Pin And Chain Tensioner
Courtesy of MAZDA MOTORS CORP.
Verify that there is no looseness in the timing chain, and re-verify that each sprocket is in the specified location.
Rotate the crankshaft clockwise two turns and inspect the valve timing.

Fig 5: Aligning Timing Marks And Key Position

Courtesy of MAZDA MOTORS CORP.

NOTE:

The timing mark of SKYACTIV-G 2.5T is not parallel with the upper surface of the cylinder head.