3 L4-2.5L (2010)
17. Rotate the crankshaft in the direction of the engine rotation so that the No.1 piston is at top dead center (TDC) of the compression stroke. (Until
the counterweight contacts SST and stops.)
18. Loosen the timing chain using the following procedure.
a. Insert a suitable bolt (M6 X 1.0, length 25-35 mm {1.0-1.3 in}) into the engine front cover upper blind plug and tighten it until it contacts the
chain tensioner arm, and then rotate it back one turn. (Set the bolt slightly away from the chain tensioner arm so that it does not contact it.)
b. Using the cast hexagon on the exhaust camshaft, apply force counterclockwise to facilitate unlocking the chain tensioner ratchet.
c. Using a Hex bit socket (2.5 mm {0.098 in}) or T15 Torx bit socket, unlock the chain tensioner ratchet so that it can be lifted up.
d. Using the cast hexagon on the exhaust camshaft, apply force in the direction of the engine rotation to increase tension on the chain.
