Removal And Installation

CAMSHAFT

Removal and Installation


CAUTION:
The rotating direction in the text indicates all directions seen from the engine front.

REMOVAL

1.Remove the following parts.
- Intake manifold: Exploded View.
- Rocker cover: Exploded View.
- Front cover and timing chain related parts: Exploded View.
NOTE:
Removal of oil pump drive related part is not necessary.
2.Remove camshaft position sensor (PHASE) and exhaust valve timing control position sensor from camshaft bracket.

CAUTION:
- Handle camshaft position sensor (PHASE) and exhaust valve timing control position sensor carefully and avoid impacts.
- Never disassemble camshaft position sensor (PHASE) and exhaust valve timing control position sensor.
- Never place sensor where it is exposed to magnetism.





3.Put the matching mark (A) on the camshaft sprocket (INT) (2), camshaft sprocket (EXH) (3) and the camshaft bracket (1) as shown in the figure.
NOTE:
It prevents the knock pin of the camshaft (INT) from engaging with the incorrect pin hole when installing the camshaft sprocket (INT).
4.Remove camshaft sprockets (INT and EXH).





- Secure hexagonal part (A) of camshaft with a wrench. Loosen camshaft sprocket mounting bolts and remove camshaft sprocket.






CAUTION:
- Never rotate crankshaft or camshaft while timing chain is removed. It causes interference between valve and piston.
- Never loosen the mounting bolts with securing anything other than the camshaft hexagonal part or with tensioning the timing chain.
5.Remove camshaft bracket with the following procedure:





a.Loosen mounting bolts in reverse order as shown in the figure.

White arrow indicates : Engine Front






b.Cut liquid gasket by prying the position (black arrow) shown in the figure, and then remove the camshaft bracket.

White arrow indicates : Engine front

CAUTION:
- Never damage the mating surface.
- A more adhesive liquid gasket is applied compared to previous types when shipped, so it should not be forced off the position not specified.
6.Remove camshafts.
7.Remove valve lifters.
- Identify installation positions, and store them without mixing them up.
8.Remove signal plate from camshaft, if necessary.

INSTALLATION


CAUTION:
Do not reuse O-rings.
1.Install valve lifters.
- Install them in the original positions.
2.Install camshafts.
- Clean camshaft journal to remove any foreign material.





- Distinguish between the intake and the exhaust by looking at the different shapes of the front and rear ends of the camshaft or using the identification colors (A) and (B).














- Install camshafts so that camshaft dowel pins (A) on the front side are positioned as shown in the figure.






NOTE:
Though camshaft does not stop at the positions as shown in the figure, for the placement of cam nose, it is generally accepted camshaft is placed for the same direction of the figure.
3.Install camshaft bracket with the following procedure:
a.Remove foreign material completely from camshaft bracket backside and from cylinder head installation face.





b.Apply liquid gasket (A) to camshaft bracket as shown in the figure.





Use Genuine RTV silicon sealant or equivalent. Recommended Chemical Products And Sealants
.





c.Tighten mounting bolts of camshaft brackets in the following steps, in numerical order as shown in the figure.

White arrow indicates : Engine Front

- There are two types of mounting bolts. Refer to the following for locating bolts.





i.Tighten mounting bolts in numerical order.





ii.Tighten mounting bolts in numerical order.





iii.Tighten mounting bolts in numerical order.






CAUTION:
After tightening mounting bolts of camshaft brackets, be sure to wipe off excessive liquid gasket from the mating surface of cylinder head.
4.Install the camshaft sprocket to the camshaft with the following procedure.





a.When the camshaft sprocket (INT) (2) and camshaft sprocket (EXH) (3) is removed, refer to the paint mark (A) put according to step "3". Securely align the knock pin and the pin hole, and then install them.





b.Tighten bolts in the following steps.
- Secure the hexagonal part of camshaft using wrench to tighten mounting bolt.
i.Tighten camshaft mounting bolt.






ii.Turn 30 degrees clockwise (angle tightening).

CAUTION:





Check the tightening angle by using an angle wrench [SST: KV-10112100 (BT-8653-A)] (B) or protractor. Never judge by visual inspection without an angle wrench.





5.Install timing chain and related parts. Exploded View.
6.Inspect and adjust valve clearance. Service and Repair.
7.Install remaining parts in the reverse order of removal.