Detroit Diesel MBE 4000 Service Manual page 366

4.2 COOLANT PUMP
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6. Measure the gap between the impeller and the coolant pump housing. This gap,
listed in Table 4-4, must be more than 0.6 mm (0.023 inch) and less than 1.0 mm (0.039
inch). See Figure 4-11.
Description
Gap Between the Impeller and the Coolant Pump
Housing
Table 4-4 Coolant Pump Assembly, Critical Dimension
1. Impeller
Figure 4-11
7. Rotate the coolant pump drive shaft to make sure it moves easily and freely.
8. Install the coolant pump on the engine.
4.2.4 Coolant Pump Installation
Install the coolant pump as follows:
1. Install the coolant pump on the cylinder block. Install a new gasket. Tighten the mounting
bolts 30 N·m (22 lb·ft).
2. Connect the inlet pipe to the coolant pump housing, as removed. Install a new gasket on
the mating surface between the inlet pipe and the coolant pump housing. Tighten the
inlet pipe mounting bolts 50 N·m (37 lb·ft).
4-18
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Gap Between the Impeller and the Housing
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mm (inch)
0.6-1.0 (0.023-0.039)
2. Coolant Pump Housing
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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