Detroit Diesel MBE 4000 Service Manual page 254

2.1 INJECTOR UNIT PUMP
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11. Remove both mounting bolts completely. Carefully pull the unit pump out of the cylinder
block. See Figure 2-6.
1. Mounting Bolt
2. Unit Pump
Figure 2-6
12. Check the injector unit pump for wear or damage. If any is found, replace the entire
component. It is not repairable.
13. Remove and discard the two O-rings on the unit pump shaft.
2.1.2 Injector Unit Pump Installation
Install the injector unit pump as follows:
1. Lubricate two new O-rings with a light coating of engine oil.
2-8
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Removing the Unit Pump
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3. Cylinder Block
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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