Fuel Filter Lines Group
Usage:
As Viewed From Front Of Engine.
(1) Cylinder head.
(2) Tube assembly (fuel return to tank).
(3) Tube assembly (fuel transfer pump to fuel filter).
(4) Check valve assembly (maintains minimum fuel system pressure).
Minimum at low idle ... 50 kPa (7.2 psi)
NOTE: Refer to the Testing and Adjusting Section of this Service Manual, for the procedure to check the fuel pressure.
(5) Fuel outlet port.
(6) Screen assembly.
(7) Fuel inlet port.
(8) Fuel gallery.
(9) Pressure regulating orifice
Maintains fuel system pressure as follows:
Maximum at rated rpm ... 400 kPa (58 psi)
Manimum at rated rpm ... 200 kPa (29 psi)
NOTE: The pressure regulating orifice is a drilled passage in tube assembly (2).
Caterpillar Information System:
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