Perkins — High pressure fuel line or lines are removed.

A Perkins service procedure — check it applies to your exact model before use.

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Procedure

1. Outer coverings are chafed or cut.
2. Wires are exposed.
3. Outer coverings are ballooning.
4. Flexible part of the hoses are kinked.
5. Outer covers have embedded armoring.
6. End fittings are displaced.
7. el spray may cause a fire hazard. Failure to fol- low these inspection, maintenance and service in- structions may cause personal injury or death.
8. The high-pressure fuel lines are constantly charged with high pressure.
9. The internal pressures of the high-pressure fuel lines are higher than other types of fuel system.
10. The high-pressure fuel lines are formed to shape and then strengthened by a special process.
11. Inspect the high-pressure fuel lines for damage, deformation, a nick, a cut, a crease, or a dent.
12. Do not operate the engine with a fuel leak. If there is a leak, do not tighten the connection in order to stop the leak. The connection must only be tightened to the recommended torque. Refer to
13. Remove and Fuel injection lines - Install”.
14. If the high-pressure fuel lines are torqued correctly, and the high-pressure fuel lines are leaking the high-pressure fuel lines must be replaced.

Source: manual:992774__24_1204e_e44t__4tta_mk_ml.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.