Detroit Diesel MBE 4000 Service Manual page 300

2.12 FUEL SYSTEM INSPECTION
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2.12.2.3 Checking the Fuel Pump Driven Gear Bolt Torque
This procedure describes how to check the fuel pump assembly for any play or wear on the
fuel pump shaft drive gear mounting bolt. Any play in this component has a big impact on
engine performance.
1. Remove the fuel pump.
2. Set the torque wrench to 30 N·m (22 lb·ft).
Do not apply a torque over 30 N·m (22 lb·ft). Excessive torque
can cause the bolt/gear failure.
3. Turn the torque wrench as shown by the arrow in until the torque wrench "clicks." This
resistance ensures that the fuel pump drive gear is in good condition. In the event of NO
resistance found with shaft turning freely, proceed to the next step. See Figure 2-28.
1. Torque wrench
2. Fuel Pump Drive Gear Splines
Figure 2-28
4. Remove the fuel pump drive gear cover.
2-54
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NOTICE:
Checking Fuel Pump Drive Gear
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3. Fuel Pump
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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All information subject to change without notice.
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