Detroit Diesel MBE 4000 Service Manual page 326

3.4 OIL PUMP
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3.4.2 Oil Pump Disassembly
Disassemble the oil pump unit as follows:
1. Remove the oil pump from the cylinder block. Refer to section 3.4.1.
2. Remove the face plate mounting bolts and remove the face plate from the oil pump
housing. See Figure 3-13.
1. Face Plate Mounting Bolt
2. Face Plate
3. Idler Gear
Figure 3-13
3. Remove the idler gear from the pump housing.
4. Using an appropriate drift, press the drive wheel off the pump drive gear.
5. Remove the pump drive gear from the pump housing.
6. Inspect the idler gear, pump drive gear, face plate, and pump housing for damage and
excessive wear. Replace any worn or damaged parts.
NOTE:
If either the idler gear or pump drive gear needs replacing, replace both gears as a set.
3-16
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Oil Pump (exploded view)
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4. Pump Drive Gear
5. Pump Housing
6. Drive Wheel
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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