Detroit Diesel MBE 4000 Service Manual page 208

1.19 VALVES
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2. Remove the collets, spring retainer, valve spring, and spring base. See Figure 1-123.
1. Valve Stem Seal
2. Valve Stem
Figure 1-123
3. Remove the valve stem seal. Do not remove the valve.
4. Lubricate the valve stem and valve stem seal installer (J 46184 or 403 589 00 61 00)
with a light coating of clean engine oil.
NOTE:
The installer prevents the groove on the valve stem from damaging the seal.
5. Push the valve stem seal installer (J 46184 or 403 589 00 61 00) over the valve stem until
it makes contact with the valve.
6. Slide the seal over the installer and the valve stem. Using fingers, press the seal into
place until the seal seats on the valve guide.
NOTE:
Check the seal to make sure it is correctly seated on the valve guide.
7. Remove the installer from the valve stem seal and the valve.
8. Install the collets, spring retainer, valve spring and spring base, as removed.
9. Repeat the procedure for the other valves.
10. Install the cylinder head. Refer to section 1.2.2.
1-160
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Valve Stem Seal Replacement
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3. Valve Guide
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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