Camshaft journal diameter

Mark 1

Mark 2

Mark 3

35.971 to 35.985 mm (1.4162 to 1.4167 in.)

35.971 to 35.985 mm (1.4162 to 1.4167 in.)

35.971 to 35.985 mm (1.4162 to 1.4167 in.)

7. INSPECT INNER COMPRESSION SPRING

(a) Using vernier calipers, measure the free length of the valve spring. Free length:

47.43 mm (1.867 in.) If the free length is not as specified, replace the valve spring.

Deviation

(b) Using steel squares, measure the deviation of the valve spring. Maximum deviation: 1.6 mm (0.063 in.)

If the deviation is greater than the maximum, replace the valve spring.

8. INSPECT INTAKE VALVE

(a) Using a gasket scraper, scrape off any carbon on the valve head.

(b) Using vernier calipers, measure the overall length of the valve.

Standard overall length: 101.71 mm (4.0043 in.) Minimum overall length: 101.21 mm (3.9846 in.)

If the overall length is less than the minimum, replace the valve.

(c) Using a micrometer, measure the diameter of the valve stem. Valve stem diameter: 5.470 to 5.485 mm (0.2154 to 0.2159 in.)

If the valve stem is not as specified, check the oil clearance.

(d) Using vernier calipers, measure the valve head margin thickness. Standard margin thickness:

1.05 to 1.45 mm (0.0413 to 0.0571 in.) Minimum margin thickness:

0.50 mm (0.0197 in.) If the margin thickness is less than the minimum, replace the valve.

Margin Thickness

9. INSPECT EXHAUST VALVE

(a) Using a gasket scraper, scrape off any carbon on the valve head.

-

Overall Length

T /

-

N ■

A121383E01

(b) Using vernier calipers, measure the overall length of the valve.

Standard overall length: 101.15 mm (3.9823 in.) Minimum overall length: 100.70 mm (3.9646 in.)

If the overall length is less than the minimum, replace the valve.

(c) Using a micrometer, measure the diameter of the valve stem. Valve stem diameter: 5.465 to 5.480 mm (0.2152 to 0.2157 in.)

If the valve stem is not as specified, check the oil clearance.

Margin Thickness

(d) Using vernier calipers, measure the valve head margin thickness.

Standard margin thickness:

1.20 to 1.60 mm (0.0472 to 0.0630 in.) Minimum margin thickness:

0.50 mm (0.0197 in.) If the margin thickness is less than the minimum, replace the valve.

10. INSPECT INTAKE VALVE GUIDE BUSH

(a) Using a caliper gauge, measure the inside diameter of the guide bush.

Bushing inside diameter: 5.510 to 5.530 mm (0.2169 to 0.2177 in.)

(b) Subtract the valve stem diameter measurement from the guide bush inside diameter measurement. Standard oil clearance:

0.025 to 0.060 mm (0.0010 to 0.0024 in.) Maximum oil clearance: 0.080 mm (0.0031 in.) If the clearance is greater than the maximum, replace the valve and guide bush.

11. INSPECT EXHAUST VALVE GUIDE BUSH

(a) Using a caliper gauge, measure the inside diameter of the guide bush.

Bushing inside diameter: 5.510 to 5.530 mm (0.2169 to 0.2177 in.)

(b) Subtract the valve stem diameter measurement from the guide bushing inside diameter measurement.

Standard oil clearance:

0.030 to 0.065 mm (0.0012 to 0.0026 in.) Maximum oil clearance: 0.100 mm (0.0039 in.) If the clearance is greater than the maximum, replace the valve and guide bush.

12. INSPECT VALVE LIFTER

(a) Using a micrometer, measure the lifter diameter. Lifter diameter: 30.966 to 30.976 mm (1.2191 to 1.2195 in.)

(b) Using a caliper gauge, measure the lifter bore diameter of the cylinder head.

Standard lifter bore diameter: 31.009 to 31.025 mm (1.2208 to 1.2215 in.)

(c) Subtract the lifter diameter measurement from the lifter bore diameter measurement.

Standard oil clearance:

0.033 to 0.059 mm (0.0013 to 0.0023 in.) Maximum oil clearance: 0.070 mm (0.0028 in.) If the oil clearance is greater than the maximum, replace the lifter. If necessary, replace the cylinder head.

Length

A094201E01

A094201E01

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

Don't pay hundreds of dollars to find out what is wrong with your car. This book is dedicated to helping the do it yourself home and independent technician understand and use OBD-II technology to diagnose and repair their own vehicles.

Get My Free Ebook


Responses

  • teodros
    How to fix the spring for camry 97?
    8 years ago

Post a comment