4. Maintenance & Inspection
When there is too much tension
in
the V-
belt, the belt will become damaged more
quickly and the bearing
of
the cooling
water pump may be damaged.
1. Check the tension
of
the V-belt by
pressing down on the middle
of
the belt
with your finger.
With proper flexion, the V-belt should
sink
8-10
mm.
2.
Loosen the set bolt and move the
cooling water pump
to
adjust V-belt
tension.
3.
Be careful not
to
get any oil on the V-
belt. Oil
on the belt causes slipping and
stretching. Replace the belt if it is mar-
red.
(3)
Adjusting
the
Tension
of
the
Alter-
nator
Driving
Belt.
When there is not enough tension
in
the V-
belt, the alternator will not turn and power
will not be generated.
When there is too much tension
in
the V-
belt, the belt will become damaged more
quickly, and the alternator bearing may be
damaged.
1.
Check the tension
of
the V-belt by
pressing down on the middle
of
the belt
with your finger.
With proper
flexion, the V-belt should
sink
8-1
Omm.
2.
Loosen the set bolt and move the alter-
nator
to
adjust V-belt tension.
38
3.
Be careful not
to
get any oil on the V-
belt. Oil
on the belt causes slipping and
stretching.
Replace the belt if it is mar-
red.
(4)
Replacing
the
Engine Oil
and
Lube
Oil
Filter
(See 4.3.1(1))
(5)
Cleaning
the
Intake
Silencer
Disassemble the intake silencer and clean
the inside thoroughly.
Remove the cover by taking off the clamp.
Clean
the element with a neutral detergent.
Reassemble after it is completely dry.
4.3.5
Inspection
Every 600 Hrs.
(1)
Replacing
Fresh
Water
Cooling
Cooling performance drops when cooling
water is contaminated with rust and scale.
Even if antifreeze
or
antirust is added, the
cooling water must be replaced period-
ically because the properties
of
the agent
will degenerate.
To extract the cooling water, open the
cooling water cocks (three places) as
shown
in
3.4(2).
(Refer
to
3.2.4 for resupplying cooling
water.)
(2)
Inspecting
Inner
Parts
of
the
Sea-
water
Pump
Depending on the use, the inside parts
of
the seawater pump deteriorate and dis-
charge performance drops. At the
specified
interval
or
when the volume
of
seawater discharged is reduced, inspect
the seawater pump
in
accordance with the
following procedures:
1. Loosen the side cover set
bolts and
remove the side cover.
2.
Illuminate the inside
of
the seawater
pump with a
flashlight and inspect.
3.
If any
of
the following problems is
found,
disassembly and maintenance
are necessary:
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