REMOVAL AND INSTALLATION







Removal steps
<<A>>
>>D<<
1.
Timing chain tensioner


2.
Tensioner lever


3.
Timing chain guide

>>C<<
4.
Timing chain
<<B>>
>>B<<
5.
Exhaust V.V.T. sprocket bolt


6.
Exhaust V.V.T. sprocket assembly
<<C>>
>>A<<
7.
Inlet V.V.T. sprocket bolt


8.
Inlet V.V.T. sprocket assembly

REMOVAL SERVICE POINTS



<<A>> TIMING CHAIN TENSIONER REMOVAL



1.Insert a flatblade screwdriver into the release hole of the timing chain tensioner to release the latch.
2.Push the tensioner lever by hand and push in the plunger of the timing chain tensioner until it hits the bottom. Then, insert a hard wire (piano wire or the like) of Φ1.5 or hexagonal bar wrench (1.5 mm) into the fixing hole of the plunger.
3.Remove the timing chain tensioner.

<<B>> EXHAUST V.V.T. SPROCKET BOLT REMOVAL



Hold the hexagonal portion of the exhaust camshaft with a wrench and loosen the exhaust V.V.T. sprocket bolt.

<<C>> INLET V.V.T. SPROCKET BOLT REMOVAL



Hold the hexagonal portion of the inlet camshaft with a wrench and loosen the inlet V.V.T. sprocket bolt.

INSTALLATION SERVICE POINTS



>>A<< INLET V.V.T. SPROCKET BOLT INSTALLATION



1.Assemble the inlet V.V.T. sprocket assembly in the following procedure.

  • Make sure that the knock pin of the inlet camshaft assembly is positioned facing straight upward.
  • Apply an appropriate and minimum amount of engine oil to the circumference of the tip of the inlet V.V.T. sprocket assembly and the entire circumference of the area into which the inlet V.V.T. sprocket assembly is inserted.
  • Slowly insert the inlet V.V.T. sprocket assembly into the normal position of the inlet camshaft assembly with its knock pin hole facing straight upward.
2.Install the V.V.T. sprocket.
3.Make sure that the V.V.T. sprocket is securely inserted into the bottom and that the V.V.T. sprocket does not rotate with the hexagonal portion of the camshaft secured with a wrench.

4.Hold the hexagonal portion of the camshaft with a wrench and tighten the inlet V.V.T. sprocket bolt to the specified torque of 59 ± 5 N·m.

>>B<< EXHAUST V.V.T. SPROCKET BOLT INSTALLATION


1.Assemble the exhaust V.V.T. sprocket assembly in the following procedure.

  • Make sure that the knock pin of the exhaust camshaft assembly is positioned facing straight upward.
  • Apply an appropriate and minimum amount of engine oil to the circumference of the tip of the exhaust V.V.T. sprocket assembly and the entire circumference of the area into which the exhaust V.V.T. sprocket assembly is inserted.
  • Slowly insert the exhaust V.V.T. sprocket assembly into the normal position of the exhaust camshaft assembly with its knock pin hole facing straight upward.
2.Install the V.V.T. sprocket.
3.Make sure that the V.V.T. sprocket is securely inserted into the bottom and that the V.V.T. sprocket does not rotate with the hexagonal portion of the camshaft secured with a wrench.

4.Hold the hexagonal portion of the camshaft with a wrench and tighten the camshaft sprocket bolt to the specified torque of 59 ± 5 N·m.

>>C<< TIMING CHAIN INSTALLATION



1.Align the timing mark of the V.V.T. sprocket.
2.Align the crankshaft sprocket keys with illustrated positions.

3.Align the link plate (orange) with the timing mark of the exhaust V.V.T. sprocket and loop the timing chain.

4.Align the link plate (blue) with the timing mark of the inlet V.V.T. sprocket to loop the timing chain.
Rotate the inlet V.V.T. sprocket by one or two teeth to align with the timing mark.

5.Align the timing mark of the crankshaft sprocket with the link plate (blue) to loop the timing chain. Because the timing chain slacks, hold it to prevent the timing mark from coming off the link plate.

6.Make sure that the timing mark of each sprocket is aligned with the link plate of the timing chain at all of three locations.
7.Install the timing chain guide and tensioner lever.

>>D<< TIMING CHAIN TENSIONER INSTALLATION



1.Install the timing chain tensioner on the cylinder block and tighten it to the specified torque of 10 ± 2 N·m.
2.Remove the hard wire (piano wire or the like) of Φ1.5 or hexagonal bar wrench (1.5 mm) from the timing chain tensioner. This enables the plunger of the timing chain tensioner to push the tensioner lever to keep the timing chain tight.