Detroit Diesel MBE 4000 Service Manual page 293

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2.12 FUEL SYSTEM INSPECTION
Perform the following steps to inspect the fuel system for damage:
To avoid injury from penetrating fluids, do not put your
hands in front of fluid under pressure.
pressure can penetrate skin and clothing.
To avoid injury from fire, keep all potential ignition sources
away from diesel fuel, including open flames, sparks, and
electrical resistance heating elements. Do not smoke when
refueling.
NOTE:
For additional safety precautions, refer to the General Information section of the MBE
4000 Service Manual (6SE412).
1. Check fuel delivery lines looking for deformation or bent lines, creating restriction and/or
obstruction of the flow.
2. Check suction lines and connections looking for damage or under torque, allowing air
to enter the fuel system.
3. Check the fuel tank installation. Look for bent/blocked lines, and leaks.
4. Check high-pressure lines for leaks. Look for connector nut leaks at the unit pump
and at the transfer tube on the cylinder head. In the event of leaks, disassemble and
inspect the high-pressure lines/transfer tube. For proper torque specifications, see those
listed in Table 2-2.
Table 2-2
5. Perform a fuel pressure test. Refer to section 2.12.1.
All information subject to change without notice.
6SE412 0403 Copyright © 2004 DETROIT DIESEL CORPORATION
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PERSONAL INJURY
Component
Transfer Tube Nut
High Pressure Line Nuts
Torque Specifications for Fuel Line Nuts
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FIRE
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MBE 4000 SERVICE MANUAL
Fluids under
Torque
45 N·m (33 lb·ft)
30 N·m (22 lb·ft)
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2-47
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