Camshaft: Service and Repair
A: REMOVAL1. RELATED PARTS
Remove timing belt, camshaft sprockets and valve rocker assembly.
2. CAMSHAFT (LH)
a. Remove camshaft position sensor.
(1) Remove bolts (a) through (b) in alphabetical sequence.
(2) Equally loosen bolts (c) through (j) all the way in alphabetical sequence.
(3) Remove bolts (k) through (p) in alphabetical sequence using ST. ST 499497000 TORX PLUS
(4) Remove camshaft cap.
a) Remove camshaft (LH).
b) Remove oil seal.
c) Remove plug from rear side of camshaft (LH).
CAUTION:
^ Do not remove oil seal unless necessary.
^ Do not scratch journal surface when removing oil seal.
3. CAMSHAFT (RH)
a. Remove camshaft cap.
(1) Remove bolts (a) through (b) in alphabetical sequence.
(2) Equally loosen bolts (c) through (j) all the way in alphabetical sequence.
(3) Remove bolts (k) through (p) in alphabetical sequence using ST. ST 499497000 TORX PLUS
(4) Remove camshaft cap.
a) Remove camshaft (RH).
b) Remove oil seal.
c) Remove plug from rear side of camshaft (RH).
CAUTION:
^ Do not remove oil seal unless necessary.
^ Do not scratch journal surface when removing oil seal.
B: INSPECTION
1. CAMSHAFT
a) Measure the bend, and repair or replace if necessary.
Limit: 0.020 mm (0.0008 inch)
b) Check journal for damage and wear. Replace if faulty.
c) Measure outside diameter of camshaft journal and inside diameter of cylinder head journal, and determine the difference between the two (= oil clearance). If oil clearance exceeds specifications, replace camshaft or cylinder head as necessary.
d) Check cam face condition; remove minor faults by grinding with oil stone. Measure the cam height H; replace if the limit has been exceeded.
Cam height: H
Cam base circle diameter A:
IN: 27.5 mm (1.083 inch)
EX: 27.0 mm (1.063 inch)
2. CAMSHAFT SUPPORT
Measure the thrust clearance of camshaft with dial gauge. If the clearance exceeds the limit, replace camshaft support.
Standard: 0.030 - 0.090 mm (0.0012 - 0.0035 inch)
Limit: 0.11 mm (0.0043 inch)
C: INSTALLATION
1. CAMSHAFT (LH)
a) Apply a coat of engine oil to camshaft journals and install camshaft (LH).
b) Install camshaft cap.
(1) Apply liquid gasket on the around of camshaft cap.
Liquid gasket: THREE BOND 1280B (Part No. 0029431130)
(2) Temporarily tighten bolts (g) through (j) in alphabetical sequence.
(3) Install valve rocker assembly.
(4) Tighten bolts (a) through (h) in alphabetical sequence.
Tightening torque: 25 ± 2 Nm (2.5 ± 0.2 kg-m, 18.1 ± 1.4 ft. lbs.)
(5) Tighten TORX bolts (i) through (n) in alphabetical sequence using ST.
ST 499497000 TORX PLUS
Tightening torque: 18 ± 2 Nm (1.8 ± 0.2 kg-m, 13.0 ± 1.4 ft. lbs.)
(6) Tighten bolts (o) through (v) in alphabetical sequence.
Tightening torque: 10 ± 2 Nm (1.0 ± 0.2 kg-m, 7.2 ± 1.4 ft. lbs.)
(7) Tighten bolts (w) through (x) in alphabetical sequence.
Tightening torque: 10 ± 2 Nm (1.0 ± 0.2 kg-m, 7.2 ± 1.4 ft. lbs.)
(8) Apply a coat of grease to oil seal lips and install oil seal (A) on camshaft using ST1 and ST2.
CAUTION: Use a new oil seal.
ST1 499597000 OIL SEAL GUIDE
ST2 499587500 OIL SEAL INSTALLER
(9) Install plug using ST. ST 499587100 OIL SEAL INSTALLER
(10) Install oil level gauge guide.
(11) Install camshaft position sensor support.
2. CAMSHAFT (RH)
a) Apply a coat of engine oil to camshaft journals and install camshaft (RH).
b) Install camshaft cap.
(1) Apply liquid gasket on the around of cam shaft cap.
Liquid gasket: THREE BOND 1280B (Part No. 0029431130)
NOTE: Apply a coat of 3 mm (0.12 inch) diameter liquid gasket along edge of cam cap mating surface.
(2) Temporarily tighten bolts (g) through (j) in alphabetical sequence.
(3) Install valve rocker assembly.
(4) Tighten bolts (a) through (h) in alphabetical sequence.
Tightening torque: 25 ± 2 Nm (2.5 ± 0.2 kg-m, 18.1 ± 1.4 ft. lbs.)
(5) Tighten TORX bolts (i) through (n) in alphabetical sequence using ST.
ST 499427000 TORX PLUS
Tightening torque: 18 ± 2 Nm (1.8 ± 0.2 kg-m, 13.0 ± 1.4 ft. lbs.)
(6) Tighten bolts (o) through (v) in alphabetical sequence.
Tightening torque: 10 ± 2 mm (1.0 ± 0.2 kg-m, 7.2 ± 1.4 ft. lbs.)
(7) Tighten bolts (o) through (p) in alphabetical sequence.
Tightening torque: 10 ± 2 Nm (1.0 ± 0.2 kg-m, 7.2 ± 1.4 ft. lbs.)
(8) Apply a coat of grease to oil seal lips and install oil seal (A) on camshaft using ST1 and ST2.
CAUTION: Use a new oil seal.
ST1 499597000 OIL SEAL GUIDE
ST2 499587500 OIL SEAL INSTALLER
(9) Install plug using ST.
ST 499587100 OIL SEAL INSTALLER
(10). RELATED PARTS
Install timing belt, camshaft sprockets and related parts.