Camshaft

Camshaft

CYLINDER HEAD AND CAMSHAFT:

Removal
1. Remove the V-belts.
2. Remove the crank pulley.
3. Remove the timing belt cover.
4. Remove the timing belt.
5. Remove the cam sprocket.
6. Remove the timing belt cover No. 2 (LH).
7. Remove the timing belt cover No. 2 (RH).

NOTE: Do not damage or lose the seal rubber when removing the timing belt covers.

8. Remove the tensioner bracket.

9. Remove the camshaft position sensor support. (LH side only)
10. Remove the oil level gauge guide. (LH side only)
11. Remove the valve rocker assembly.
12. Remove the camshaft cap.
a. Remove the bolts (a) and (b) in alphabetical sequence.

b. Equally loosen the bolts (c) through (j) all the way in alphabetical sequence.

c. Remove the bolts (k) through (p) in alphabetical sequence using ST.
ST 499497000 TORX PLUS

d. Remove the camshaft cap.
13. Remove the camshaft.
14. Remove the oil seal.
15. Remove the plug from the rear side of cams h aft.

CAUTION:
^ Do not remove the oil seal unless necessary.
^ Do not scratch the journal surface when removing the oil seal.

Installation
1. Apply a coat of engine oil to camshaft journals and install the camshaft.
2. Install the camshaft cap.
a. Apply liquid gasket to the mating surfaces of camshaft cap.
Liquid gasket: THREE BOND 1280B (Part No. K0877YA018)

NOTE:
^ Apply a coat of liquid gasket of 3 mm (0.12 inch) in diameter (A) along the edge (B) of camshaft cap (C) mating surface.
^ Assemble them within 20 min. after applying liquid gasket.

b. Temporarily tighten the bolts (a) through (d) in alphabetical sequence.

c. Install the valve rocker assembly.
d. Tighten the TORX bolts (e) through (j) in alphabetical sequence using ST.
ST 499497000 TORX PLUS
Tightening torque: 18 Nm (1.8 kgf-m, 13.3 ft. lbs.)

e. Tighten the bolts (k) through (r) in alphabetical sequence.
Tightening torque: 9.75 Nm (1.0 kgf-m, 7.2 ft. lbs.)

f. Tighten the bolts (s) and (t) in alphabetical sequence.
Tightening torque: 9.75 Nm (1.0 kgf-m, 7.2 ft. lbs.)

3. Apply engine oil to the outer perimeter and lips of oil seal, and install the oil seal (A) on camshaft using ST1 and ST2.

NOTE: Use a new oil seal.

ST1 499597000 OIL SEAL GUIDE
ST2 499587500 OIL SEAL INSTALLER

4. Install the plug (A) using ST.
ST 499587700 CAMSHAFT OIL SEAL INSTALLER

5. Adjust the valve clearance.
6. Tighten the bolts of rocker cover and rocker cover gasket in alphabetical order shown in the figure, and connect the PCV hose.

NOTE:
^ Use new rocker cover gasket.
^ Tighten bolts in two stages in alphabetical sequence as shown in the figure.

Tightening torque:
1st 6.4 Nm (0.65 kgf-m, 4.7 ft. lbs.)
2nd 6.4 Nm (0.65 kgf-m, 4.7 ft. lbs.)

^ RH side

^ LH side

7. Install the oil level gauge guide. (LH side)
8. Install the camshaft position sensor support. (LH side)
9. Install the tensioner bracket.
Tightening torque: 24.5 Nm (2.5 kgf-m, 18.1 ft. lbs.)

10. Install the timing belt cover No. 2 (RH).
Tightening torque: 5 Nm (0.5 kgf-m, 3.6 ft. lbs.)
11. Install the timing belt cover No. 2 (LH).
Tightening torque: 5 Nm (0.5 kgf-m, 3.6 ft. lbs.)

12. Install the cam sprocket.
13. Install the timing belt.
14. Install the timing belt cover.
15. Install the crank pulley.
16. Install the V-belt.

Inspection
1. Measure the bend, and repair or replace if necessary.
Service limit: 0.025 mm (0.0098 inch)

2. Check the journal for damage and wear. Replace if faulty.
3. Measure the outer diameter of camshaft journal and inner diameter of cylinder head journal, and make sure the difference (oil clearance) between the two values. If the oil clearance exceeds standard value, replace the camshaft or cylinder head as necessary.

4. Check the cam face condition, and remove the minor faults by grinding with oil stone. Measure the cam height H. If it exceeds the limit, replace it.
Cam height H.

Cam base circle diameter A:
Intake: 34.00 mm (1.3386 inch)
Exhaust. 34.00 mm (1.3386 inch)
Difference between base circles of adjacent intake cams (low speed and high speed): 0.03 mm (0.001 inch) or less

5. Measure the thrust clearance of camshaft with setting the dial gauge at end of camshaft. If the thrust clearance exceeds the limit, replace the camshaft cap and cylinder head as a set. If necessary, replace the camshaft.

Standard. 0.030 - 0.090 mm (0.0012 - 0.0035 inch)
Limit: 0.10 mm (0. 0039 inch)