Detroit Diesel MBE 4000 Service Manual page 97

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7. Insert the constant-throttle valve (CTV) spring remover (442 589 05 63 00)down onto the
spring retainer. Remove the collets with a magnetic pin. See Figure 1-37.
1. Collets
2. Spring Retainer
Figure 1-37
8. Relieve the pressure on the spring. Remove the spring retainer, spring and spring guide.
For ease of installation, mark the spring retainer and spring guide with a paint pen.
9. Turn over the cylinder head. From the bottom of the cylinder head, draw out the valve and
spacer. For ease of installation, mark the valve with a paint pen.
10. Using a small hook, remove and discard the valve stem seal.
NOTE:
Always replace the valve stem seal whenever the constant-throttle valve is removed.
11. Repeat this procedure for each constant-throttle valve.
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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Compressing the Spring
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MBE 4000 SERVICE MANUAL
3. Spring
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1-49
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