Mazda CX-9 Grand Touring 2009 Manual page 1452

4. Secure the chain tensioner using a vice attached with a soft base, and slowly press the plunger back
shown in the figure while pressing down the link plate.
5. Release the pressure slightly from the plunger, and move the plunger back and forth 2-3 mm {0.08-0.11
in).
Fig. 60: Pressing Plunger
Courtesy of MAZDA MOTORS CORP.
6. Insert an approx. 1.5 mm {0.059 in} thick wire or paper clip where the link plate hole and the tensioner
body hole overlap to fix the link plate and lock the plunger.
7. Install the timing chain in the following order.
1. Crankshaft sprocket
2. Chain guide
3. Tensioner arm
4. Timing chain
5. Chain tensioner
2008 Mazda CX-9 Grand Touring
2008 ENGINE Mechanical (MZI-3.7) - Mazda CX-9
Fig. 59: Pushing Link Plate Of Timing Chain Tensioner
Courtesy of MAZDA MOTORS CORP.