Service Manual

ISB, ISBe and QSB (Common Rail [...] Engine Testing (Engine Dynamometer)
Section 14 - Engine Testing - Group 14 Page 14-17
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Allow the oil to drain into the oil pan, and measure the oil
level with the dipstick.
Add oil, as necessary, to bring the level to the high level
mark on the dipstick.
Lubricate the gasket on the fuel filter with clean 15W-40
oil.
Fill the fuel filter with clean fuel.
Screw the fuel filter onto the fuel filter head until the
gasket contacts the fuel filter head surface.
Tighten the filter as specified by the manufacturer.
To measure fuel filter restriction, Refer to Procedure
005-011
Fuel Filter Restriction Pressure Gauge Capacity
kPa psi
1379 MIN 200