Page 29 - E BOOK ENGINE MECHANICAL M2

5. SERVICE POINTS OF 4B1 ENGINE COMPONENT

< << <Inspection of Intake V.V.T. Sprocket>

1. Cover with adhesive vinyl tape all the intake camshaft
ports for the advanced and the retarded angle.

2. Make a hole on the port for the advanced angle.

Fig. 5-3

3. Fix the hexagonal area of the intake camshaft on a
vise, and assemble the intake V.V.T. sprocket to the
camshaft over the taped area.

4. Apply air pressure slowly to the holed port for the ad-
vanced angle, and increase it as necessary, until you
can remove the stopper pin.

5. Turn the inlet V.V.T. sprocket housing in the right and
left directions. Check it smoothly moves in the range of
A (approximately 12.5°)
Fig. 5-4

< << <Inspection of Exhaust V.V.T. Sprocket>
1. Cover with adhesive vinyl tape all the exhaust cam-
shaft ports for the advanced angle and the retarded an-
gle.

2. Make a hole on the port for the retarded angle.

Fig. 5-5

3. Fix the hexagonal area of the exhaust camshaft on a
vise, and assemble the exhaust V.V.T. sprocket to the
camshaft over the taped area.

4. Apply air pressure slowly to the holed port for the re-
tarded angle, and increase it as necessary, until you can
remove the stopper pin.

5. Turn the exhaust V.V.T. sprocket housing in the right
and left directions. Check it smoothly moves in the range
of A (approximately 10°)
Fig. 5-6

5 - 2 Pub. No. PTAE1225