Operation and maintenance manual

SEBU8601-01 123
Maintenance Section
Water Pump - Inspect
High Pressure Fuel Lines
Contact with high pressure fuel may cause fluid
penetration
and burn hazards. High pressure fu-
el spray may cause a fire hazard. Failure to fol-
low these inspection, maintenance a nd service in-
structions
may cause personal injury or death.
After the engine has stopped, you must wait for
10 minutes i
n 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 an
y 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 pe
netration hazard. Refer to Operation and
Maintenance Manual, “General hazard Information”.
Visuall
y inspect the high-pressure fuel lines for
damage or signs of fuel leakage. Replace any
damaged high-pressure fuel lines or high-pressure
fuel li
nes that have leaked.
Ensure that all clips on the high-pressure fuel lines
areinp
lace and that the clips are not loose.
•
Inspect the rest of the fuel system for leaks. Look
for lo
ose 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.
•
Insp
ect 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
pr
otected against the current drain of the starting
motor. Check the condition and the electrolyte level
of the batteries, unless the engine is equipped with
am
aintenance free battery.
•
Check the condition of the gauges. Replace any
ga
uges that are cracked. Replace any gauge that
cannot be calibrated.
i03570653
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
•
Apistonsei
zure
•
Other potential damage to the engine
g019
04773
Illustration 85
(A) Weep hole
(B) Vent hole
Not
e: The water pump seals are lubricated by the
coolant in the cooling system. It is normal for a small
amount of leakage to occur. Refer to illustration 85
for
the position of the weep hole and the vent hole.
Visually inspect the water pump for leaks.
Note: If engine coolant enters the engine lubricating
system the lubricating oil and the engine oil filter must
be
replaced. This will remove any contamination that
is caused by the coolant and this will prevent any
irregular oil samples.