Camshaft: Service and Repair

REMOVAL AND INSTALLATION

Removal Service Points
[A] Exhaust Camshaft Sprocket/Intake Camshaft Sprocket Removal





1. Use a wrench at the hexagonal part of the camshaft (to prevent the crankshaft from turning) to loosen the camshaft sprocket bolt.
2. Remove the camshaft sprockets.

[B] Front Camshaft Bearing Cap/Camshaft Bearing Cap/Rear Camshaft Bearing (R.H.)/Rear Camshaft Bearing (L.H.) Removal
1. Loosen the bearing cap installation bolts in two or three steps.
2. Remove the bearing cap.





NOTE: If the bearing cap is difficult to remove, use a plastic hammer to gently tap the rear part of the camshaft, and then remove.

Installation Service Points
]A[ Intake Camshaft/Exhaust Camshaft Installation
1. Install the camshafts on the cylinder head.





CAUTION: Do not confuse the intake side and the exhaust side.

NOTE:
Install new camshafts using the following procedure.
1. Remove the rocker arms.
2. Lay the camshafts on the cylinder head and install the bearing caps.





3. Check that the camshaft can be easily turned by hand.
4. After checking, remove the bearing caps and the camshafts, and install the rocker arms.





2. The camshaft's dowel pins should be at the positions shown in the figure.

]B[ Rear Camshaft Bearing Cap (R.H.)/Rear Camshaft Bearing Cap (L.H.)/Camshaft Bearing Cap/From Camshaft Bearing Cap Installation
Tighten the bearing cap installation bolts to the specified torque in two or three steps.

CAUTION: Tighten uniformly, otherwise the rocker arms will not be straight.

]C[ Camshaft Oil Seal Installation





Use the special tool to drive the camshaft oil seal into position carefully.

]D[ Camshaft Position Sensing Cylinder/ Camshaft Position Sensor Support Installation





1. Install the camshaft position sensing cylinder to the end of the camshaft as shown in the illustration.
2. Install the camshaft position sensor support.





3. Check that the identification paint on the camshaft position sensing cylinder is pointing in the same direction as the camshaft position sensor installation direction when the camshaft is at the No. 1 compression TDC position.