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Home >> Isuzu Truck >> 2000 >> Hombre XS Space Cab 2WD L4-2.2L CPC >> Repair and Diagnosis >> Engine, Cooling and Exhaust >> Engine >> Cylinder Head Assembly >> Service and Repair >> Valves, Valve Springs, Valve Guides and Valve Seals >> Reassembly

Reassembly

- Tools Required
- J38820 Valve Stem Seal Installer
- J8062 Valve Spring Compressor

1. Clean the cylinder head valve spring seat area.

Important: When reusing the valves and related components, install the parts in their original location.





2. Install the valves fully seated into their proper ports.
3. Lubricate the outside diameter of the valve guide with engine oil.
4. Using the J38820 install the valve spring seat and seal unit.
Push and twist the valve seal into position on the valve guide until the spring seat flange is flush with the cylinder head surface.

Important: The LN2 Engine uses a unique valve spring seat and seal combination unit. Under no circumstances should this seal and seat unit be replaced with a different type of seal.

5. Install the valve stem oil seal onto the guide. Do not use excessive force or a hammer to install the seal on the guide. The seal will go on if straight and properly lubricated using hand pressure only.

Important: Use care to ensure that the valve stem seal and spring seat are not damaged during installation.
6. Push the seal flange flush against the head surface.
7. Install the valve spring.
8. Install the valve spring retainer.
9. Compress the valve spring using the J8062.
10. Install the valve stem keys.
1. Use grease to hold the keys in place and remove the J8062.
2. Make sure the keys seat properly in the groove of the valve stem and in the tapered seat of the spring retainer.
3. Tap the end to the valve stem with a plastic faced hammer to seat the keys (if necessary).





11. Measure the valve spring installed height using a ruler.
12. Measure from the surface of the valve stem seal under the valve spring to the top of the valve spring.
Specification
- If the installed height exceeds 43.43 mm (1.709 inch), install a valve seat spring shim of approximately 0.25 mm (0.010 inch) thick.

Important: Never place a valve spring shim beneath the bottom of the valve stem seal flange.
13. Do not shim the valve spring to obtain less than the specified height.
14. Install the remaining valves, springs, and other components.
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