Camshaft

Camshaft






Disassembly






1. Remove the engine cover and intake manifold.
2. Disconnect the breather hose and the engine harness.
3. Remove the power steering pulley, air conditioner pulley, crankshaft pulley, idler pulley and tensioner pulley.
4. Remove the timing belt cover.
5. Loosen the auto tensioner.
6. Remove the timing belt from the camshaft sprocket.
7. Remove the spark plug cables.






8. Loosen the cylinder head cover bolts and then remove it.
9. Remove the camshaft sprockets.






10. Remove the camshaft bearing caps.






11. Remove the camshafts.

Inspection
Camshafts
1. Check the camshaft journals for wear. If the journals are badly worn out, replace the camshaft.







2. Check the cam lobes for damage. If the lobe is damaged or excessively worn out, replace the camshaft.

Cam height [Standard]
Intake: ............43.95 - 44.15 mm (1.7303 - 1.7382 inch)
Exhaust: ............43.95 - 44.15 mm (1.7303 - 1.7382 inch)
[Limit]
Intake/Exhaust: ............43.45 mm (1.7106 inch)

3. Check the cam surface for abnormal wear or damage, and replace if necessary.
4. Check each bearing for damage. If the bearing surface is excessively damaged, replace the cylinder head assembly or camshaft bearing cap, as necessary.

Camshaft end play: ............0.1 - 0.15 mm (0.0039 - 0.0059 inch)

Inspection
Oil Seal(Camshaft Front)
1. Check the lips for wear. If lip threads are worn out, replace the oil seal with new one.
2. Check a contact surface of oil seal lip on camshaft. If there stratified wear, replace the camshaft.

Inspection





HLA (Hydraulic Lash AdjusteR)






With the HLA filled with engine oil, hold A and press B by hand. If B moves, replace the HLA.

Inspection
Timing Chain






Check the bushing and plate of timing chain for wear. Replace if there is severe wear.

Reassembly
1. Install the HLA.






2. Align the camshaft timing chain with the intake timing chain sprocket and exhaust timing chain sprocket as shown in the illustration.







3. Install the camshafts after lubricating the journals of the camshaft with engine oil.

Note: To check the press fit, the camshaft (IN) and timing chain sprocket should be separable by a force greater than 1000 kg (MIN.) at room temperature.







4. Install the bearing caps.
Check the markings on the caps for intake/exhaust identification symbol.
I: Intake camshaft
E: Exhaust camshaft







5. Tighten the bearing caps to the specified torque in two or three increments as shown.
Tightening torque
Bearing cap bolt:
M 6 (38 mm): ............10 - 12 Nm (100 - 120 kg.cm, 7 - 9 ft. lbs.)
M 6 (50 mm): ............14 - 16 Nm (140 - 160 kg.cm, 10 - 12 ft. lbs.)






6. Using the special tool, the camshaft oil seal installer (09221-21000), install the camshaft oil seal. Be sure to apply engine oil to the external surface of the oil seal. Insert the oil seal along the camshaft front end and install it with a hammer until it is seated.
7. Install the camshaft sprocket to the specified torque.
Tightening torque
Camshaft sprocket bolt: ............90 - 110 Nm (900 - 1100 kg.cm, 65 - 80 ft. lbs.)







8. Install the cylinder head cover.
Tightening torque:
8 - 10 Nm (80 - 100 kg.cm, 5.8 - 7.2 ft. lbs.)
Tightening procedure:
1) Tighten all bolts temporarily to half of the specified torque in the sequence 1.2.3.4.5.6.7.8
2) Retighten all bolts to the specified torque.

9. Install the spark plug cables and, center cover.
10. Install the timing belt and then tighten the auto tensioner pulley.
11. Install the timing belt cover.






12. Install the power steering pulley, air conditioner pulley, crankshaft pulley and tensioner pulley.






13. Connect the breather hose and engine harness.
14. Install the intake manifold and engine cover.