REMOVAL AND INSTALLATION

caution

When removing or installing the camshaft position sensor, be careful not to apply impact to the sensor.
Do not reuse the camshaft position sensor that has been dropped.

			Removal steps
		1.	Camshaft position sensor
		2.	O-ring
	>>F<<	3.	Camshaft oil seal
	>>E<<	4.	Exhaust oil pipe
	>>E<<	5.	O-ring
<<A>>	>>E<<	6.	Camshaft bearing cap, front right
<<A>>	>>E<<	7.	Camshaft bearing cap, right
	>>E<<	8.	Inlet oil pipe
	>>E<<	9.	O-ring
<<A>>	>>E<<	10.	Camshaft bearing cap, front left
<<A>>	>>E<<	11.	Camshaft bearing cap, left
	>>D<<	12.	Exhaust camshaft
	>>D<<	13.	Inlet camshaft assembly
	>>C<<	14.	Snap ring
	>>C<<	15.	Wave washer
	>>C<<	16.	Sub gear
	>>C<<	17.	C-spring
		18.	Inlet camshaft
	>>B<<	19.	Rocker arm assembly
		20.	Nut
		21.	Adjusting screw
		22.	Rocker arm
	>>A<<	23.	Stem end cap
		24.	Pivot bolt

REMOVAL SERVICE POINT

<<A>> CAMSHAFT BEARING CAP REMOVAL

Loosen the mounting bolts of the camshaft bearing cap in the order shown in the figure. Then, remove the camshaft bearing caps.

INSTALLATION SERVICE POINTS

>>A<< STEM END CAP INSTALLATION

Install the stem end cap securely to attach the stem end surfaces of the inlet and exhaust valves.

>>B<< ROCKER ARM ASSEMBLY INSTALLATION

Temporarily install the adjusting screw to the rocker arm with screw nut.
Protrusion: 5.5 - 6.5 mm

>>C<< C-SPRING / SUB GEAR / WAVE WASHER / SNAP RING INSTALLATION

1.Fix the camshaft using the hexagonal area of the inlet camshaft.

2.Press and fit a dowel pin into the inlet camshaft and sub gear to be the dimension shown in the illustration.

3.Place the C-spring adjoining the dowel pin which is pressed and fit into the inlet camshaft.

4.Within the area "A" between the c-spring and inlet camshaft, place the dowel pin which is pressed and fitted into the sub gear.
5.Install the wave washer and snap ring.

6.Set two flange bolts (M6 × 20) to two places on the sub gear. As shown in the illustration, turn the sub gear in a clockwise direction so that the sub gear hole (Φ8) can align with the inlet camshaft thread hole (M6).
7.

caution

Do not turn the sub gear excessively.
Do not press the snap ring strongly with a driver.

Screw the bolts to attach the bolt heads to the sub gear. Temporarily fix the sub gear.
8.After the temporary installation of the sub gear, remove two flange bolts (M6 × 20) described in No. 6.

>>D<< INLET CAMSHAFT ASSEMBLY/ EXHAUST CAMSHAFT INSTALLATION

1.Install the camshaft so that each timing mark can be in position as shown in the illustration.

note

Carefully install the camshaft because a rocker arm assembly is easily dropped at the camshaft installation.

2.Confirm all the stem end caps are installed.
3.Confirm the rocker arm assembly is straightly mounted on the pivot bolts and stem end caps.

>>E<< CAMSHAFT BEARING CAP / O-RING / OIL PIPE INSTALLATION

1.Apply specified sealant to portions indicated in illustration.
Specified sealant: ThreeBond 1212D or equivalent

note

Install the bearing cap immediately applying sealant.

caution

After the installation, until a sufficient period of time (one hour or more) elapses, do not apply the oil or water to the sealant application area or start the engine.

Install the bearing cap.

note

Install the camshaft bearing cap in numerical order in accordance with "cap No." stamped on the upper surface of the bearing cap.

3.Install the O-ring and oil pipe.

4.In accordance with the tightening order shown in the illustration, tighten the bearing cap bolt to the specified torque.

>>F<< CAMSHAFT OIL SEAL INSTALLATION

1.Apply engine oil to the entire inner diameter of the oil seal lip.

2.Use special tool camshaft oil seal installer (MD998713) to press-fit the oil seal as shown.