REMOVAL AND INSTALLATION

Pre-removal Operation

Rocker Cover Removal (Refer to ).

Post-installation Operation

Rocker Cover Installation (Refer to ).

			Removal steps
<<A>>	>>C<<	1.	Inlet oil pipe
	>>C<<	2.	O-ring
<<A>>	>>C<<	3.	Camshaft bearing cap left
<<A>>	>>C<<	4.	Camshaft bearing cap front
	>>B<<	5.	Inlet camshaft
		·	Timing chain (Refer to ).
<<A>>	>>C<<	6.	Camshaft bearing cap front
<<A>>	>>C<<	7.	Camshaft bearing cap right
	>>B<<	8.	Exhaust camshaft assembly
	>>A<<	9.	Snap ring
	>>A<<	10.	Wave washer
	>>A<<	11.	Sub gear
	>>A<<	12.	C-spring
	>>A<<	13.	Dowel pin
	>>A<<	14.	Exhaust camshaft

REMOVAL SERVICE POINT

<<A>> INLET OIL PIPE/CAMSHAFT BEARING CAP REMOVAL

caution

When removing the inlet oil pipe, loosen the mounting bolt while holding the inlet oil pipe to prevent the pipe from being bent.
When the camshaft bearing cap mounting bolts are loosened at once, the mounting bolts jump out by the spring force and the threads are damaged. Always loosen the mounting bolts in four or five steps.

Loosen the camshaft bearing cap mounting bolts in the order of number shown in the figure in four or five steps, and remove the camshaft bearing caps.

INSTALLATION SERVICE POINTS

>>A<< EXHAUST CAMSHAFT/DOWEL PIN/C-SPRING/SUB GEAR/WAVE WASHER/SNAP RING INSTALLATION

1.Fix the exhaust camshaft hexagonal area using a vice or other devices.

2.Press fit the dowel pin into the exhaust camshaft and sub gear so that the dimension becomes as shown in the figure.

3.After contacting the C-spring with the dowel pin as shown in the figure, set to the exhaust camshaft.

4.Set the sub gear to the exhaust camshaft so that the sub gear dowel pin is inside the A range between the C-spring and exhaust camshaft dowel pin as shown in the figure.
5.Assemble the wave washer and the snap ring to the exhaust camshaft.

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

1.Fix the hexagonal area of exhaust camshaft assembly using a vice or other devices.

caution

Avoid turning the sub gear than necessary.

Set the flange bolts (M6 x 12) to 2 locations of sub gear. Then, using a screwdriver, turn the sub gear clockwise until the sub gear hole (M7) and the threaded hole (M6) of exhaust camshaft gear match as shown in the figure.

3.Temporarily fix the sub gear using the bolt (M6 x 12). At this time, screw in until the bolt head is in contact with the sub gear.
4.Remove the 2 flange bolts (M6 x 12) installed in the step 2.
5.Remove from the vice or other devices the exhaust camshaft assembly to which the sub gear being temporarily fixed. Then, apply the engine oil to the cam face, journal section, thrust face, and gear teeth face of exhaust camshaft assembly.

6.Set the timing marks of the exhaust camshaft and inlet camshaft in the position shown in the illustration.

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

1.Be careful not to confuse the camshaft bearing cap No. and its identification mark.
2.Install the O-ring into the inlet oil pipe, taking care not to damage or twist it.
3.Install the inlet oil pipe to the camshaft bearing cap.

4.Tighten each camshaft bearing cap mounting bolts to the specified torque in the order of number shown in the figure in two or three steps.

Tightening torque:

M6: 11 ± 1 N·m
M8: 20 ± 1 N·m