Removal and Installation

REMOVAL AND INSTALLATION









REMOVAL SERVICE POINTS

[[A]] FRONT CAMSHAFT BEARING CAP / OIL FEEDING CAMSHAFT BEARING CAP / CAMSHAFT BEARING CAP / THRUST CAMSHAFT BEARING CAP REMOVAL





CAUTION:
Loosing the installation bolts for the camshaft bearing cap at the same time causes the valve spring force, which makes the installation bolts jump out, resulting in the damaged threads. Always loose them four or five times.

First remove a mounting bolt of the front camshaft bearing cap and then a mounting bolt of each camshaft bearing cap in the order shown in the illustration.

[[B]] VALVE TAPPET REMOVAL

Pick out valve tappets with fingers and store removed valve tappets with tags describing the installed position attached for reassembly.

INSTALLATION SERVICE POINTS

]]A[[ VALVE TAPPET INSTALLATION

Install valve tappets at the same position based on tags describing the installed position for reassembly.

]]B[[ CAMSHAFT / BEARING / THRUST CAMSHAFT BEARING CAP / CAMSHAFT BEARING CAP
/ OIL FEEDING CAMSHAFT BEARING CAP / FRONT CAMSHAFT BEARING CAP INSTALLATION





1. When replacing a camshaft bearing, select a bearing with the size corresponding to the identification mark in the table below.
2. Install camshaft bearings on the cylinder head.










3. The identification mark of the camshaft bearing is painted at the illustrated position.





4. Set the dowel pins of the camshaft at the illustrated positions.





5. Camshaft bearing caps Number 1 to Number 4 are of the same shape. Install them upon checking the identification mark so as not to misidentify cap Number and to confuse the intake side with the exhaust side.
Identification mark (stamped on front and Number 1 to Number 4 bearing caps)

I: Intake side
E: Exhaust side
6. Tighten each camshaft bearing cap mounting bolt to the specified tightening torque of 12 ± 1 Nm (107 ± 1 in-lb) in the order of number shown in the figure in two or three steps.





7. Tighten each front camshaft bearing cap mounting bolt to the temporarily torque of 17 ± 3 Nm (14 ± 2 ft-lb) in the order of number shown (1).
8. Tighten each front camshaft bearing cap mounting bolt to the specified tightening torque of 30 ± 2 Nm (22 ± 1 ft-lb) in the order of number shown
(2).

]]C[[ O-RING / ENGINE OIL CONTROL VALVE INSTALLATION





1.
CAUTION:

- The O-ring must not be reused.

- Wind non-adhesive tape (seal tape, etc.) around the notch of the oil passage of the oil feeder control valve before installing the O-ring to prevent damage. Damage to the O-ring causes oil leakage.

Apply a small amount of engine oil to the O-ring of the oil feeder control valve.
2. Install the oil feeder control valve on the cylinder head.
3. Tighten the oil feeder control valve to the specified tightening torque of 10 ± 2 Nm (89 ± 17 in-lb).