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SEBU9068-03
Belts for multiple groove pulleys must be replaced as
matched sets. If only one belt is replaced, the belt will
carry more load than the belts that are not replaced.
The older belts are stretched. The additional load on
the new belt could cause the belt to break.
High Pressure Fuel Lines
Contact with high pressure fuel may cause fluid
penetration and burn hazards. High pressure fuel
spray may cause a fire hazard. Failure to follow
these inspection, maintenance and service in-
structions may cause personal injury or death.
After the engine has stopped, you must wait for 10
minutes in order to allow the fuel pressure to be
purged from the high-pressure fuel lines before any
service or repair is performed on the engine fuel
lines. If necessary, perform minor adjustments.
Repair any leaks from the low-pressure fuel system
and from the cooling, lubrication, or air systems.
Replace any high-pressure fuel line that has leaked.
Refer to Disassembly and Assembly Manual, "Fuel
Injection Lines - Install".
If you inspect the engine in operation, always use the
proper inspection procedure in order to avoid a fluid
penetration hazard. Refer to Operation and
Maintenance Manual, "General hazard Information".
Visually inspect the high-pressure fuel lines for
damage or signs of fuel leakage. Replace any
damaged high-pressure fuel lines or high-pressure
fuel lines that have leaked.
Ensure that all clips on the high-pressure fuel lines
are in place and that the clips are not loose.
• Inspect the rest of the fuel system for leaks. Look
for loose fuel line clamps.
• Drain the water and the sediment from the fuel
tank on a daily basis in order to ensure that only
clean fuel enters the fuel system.
• Inspect the wiring and the wiring harnesses for
loose connections and for worn wires or frayed
wires. Check for any loose tie-wraps or missing
tie-wraps.
• Inspect the ground strap for a good connection
and for good condition.
• Disconnect any battery chargers that are not
protected against the current drain of the starting
motor. Check the condition and the electrolyte
level of the batteries, unless the engine is
equipped with a maintenance free battery.
• Check the condition of the gauges. Replace any
gauges that are cracked. Replace any gauge that
cannot be calibrated.
Aftertreatment System
Check the condition of the coolant lines, Diesel
Exhaust Fluid (DEF) lines, and electrical
connections. Check that all clamps, clips, and tie-
wraps are secure and in good condition. Check that
the DEF filler cap is secure and that the cap is clean
and free from dirt.
Water Pump - Inspect
A failed water pump may cause severe engine
overheating problems that could result in the
following conditions:
• Cracks in the cylinder head
• A piston seizure
• Other potential damage to the engine
Illustration 71
Typical example
(1) Weep hole
Note: The water pump seals are lubricated by the
coolant in the cooling system.
Visually inspect the water pump for leaks.
113
Maintenance Section
Water Pump - Inspect
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