Detroit Diesel MBE 4000 Service Manual page 211

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1.20.2
Perform the following steps in installing the valves in the EGR engine:
1. Install the valve stem sealing ring in the valve guide in the cylinder head.
2. Lubricate each valve with a light coating of engine oil.
3. Install the valves in order, as marked on removal.
NOTE:
In the EGR engine, always replace the valve stem seal and valve stem sealing ring if
the valve has been removed. Check the valve stem seal to make sure it is correctly
seated on the valve guide.
4. Using tool J 46174, install new valve stem seals and seat the valve stem seal with J tool, J
46184. Refer to section 1.20.3.
5. Using the adaptor (J 46173), install the spring seats, springs, spring retainers, and collets
(keepers). Check the keepers to be sure they are locked in place.
6. Remove the adaptor (J 46173), from the cylinder head.
7. Install the cylinder head.
1.20.3
Replace the valve stem seal and valve stem sealing ring as follows:
NOTE:
In the EGR engine, always replace the valve stem seal and valve stem sealing ring
if the valve has been removed.
1. Remove the cylinder head from the engine.
NOTE:
Use care during removal to not damage the valve guides and valve stems.
2. Remove the keeper, spring retainer, valve spring, and spring seat.
3. Remove the valve stem seal and discard.
4. Remove the valve.
5. Remove the valve stem sealing ring and discard. Repeat procedure for all remaining
valves.
6. Clean all parts before reinstalling components.
7. Install the valve stem sealing ring in the valve guide and then install the valve in the head.
Repeat procedure for all remaining valves.
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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Valve Installation in the EGR Engine
Valve Stem Seal and Valve Stem Sealing Ring Replacement in
the EGR Engine
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MBE 4000 SERVICE MANUAL
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1-163
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