Warning: The fuel supply line nipple of the high-pressure fuel pump is marked "HHN" (Fig. 3-53).
Fig. 3-53. Location of fuel line fastening fittings to the high-pressure fuel pump of diesel engines "1Z" and "AFN":
1 — fuel supply line;
2 - fuel drain line;
3 — fuel supply line nipple with a ball check valve and marking "HHN".
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