NOTICE:
Never use galvanized steel fuel tanks, fittings, pipes, or supply
lines. The fuel reacts chemically with the zinc coating to form powdery
flakes that can quickly clog the fuel filters and damage the fuel pumps and
injectors.
6. Every 120,000 miles (200,000 kilometers) or 12 months, tighten all fuel tank
mountings and brackets. At the same time, check the seal in the fuel tank cap,
the breather hole in the cap, and the condition of the flexible fuel lines.
Repair or replace the parts, as necessary.
Inspection of Hoses and Fittings for Fuel Leaks
A pre-start inspection of hoses and fuel lines is recommended. Make a visual check
for fuel leaks at all engine-mounted fuel lines and connections, and at the fuel tank
suction and return lines. Since fuel tanks are susceptible to road hazards, leaks in
this area may best be detected by checking for an accumulation of fuel under the
tank.
WARNING: HOT OIL
To avoid injury from hot oil, do not operate the engine with the
rocker cover(s) removed.
NOTE:
Leaks are not only detrimental to machine operation, but they can
also result in added expense caused by the need to replace lost fluids
Inspection of Hoses and Fittings
Check hoses daily as part of the pre-start inspection.
• Examine hoses for leaks, and check all fittings, clamps and ties carefully.
• Make sure hoses are not resting on or touching shafts, couplings, heated surfaces
including exhaust manifolds, sharp edges, or other obvious hazardous areas.
• Since all machinery vibrates and moves to a certain extent, clamps and ties can
fatigue with age. To ensure continued proper support, inspect fasteners
frequently and tighten or replace them as necessary.
• If fittings have loosened or cracked, or if hoses have ruptured or worn through,
take corrective action immediately.
Inspection of Hoses with Extended Service Life
A hose has a finite service life. With this in mind, inspect hoses as follows:
NOTE:
Fire-resistant fuel and lubricating oil hose assemblies do not require
automatic replacement after five years of service or at major overhaul, but
should be inspected carefully before being put back into service.
Routine Preventive Maintenance
72
All information subject to change without notice.
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DDC-SVC-MAN-0175
