Inspection Every 1000 Hrs. 4 Yrs - Yanmar 6LPA-DTP Operación Manual

5.2.6 Inspection Every 1000 Hrs. or 4 yrs.
(1) Inspecting Inner Parts of the Seawater Pump
The inside parts of the seawater pump will dete-
riorate with use, and discharge performance
falls. At the specified interval or when the dis-
charge volume of seawater is reduced, inspect
the seawater pump in accordance with the fol-
lowing procedures.
① Loosen the side cover set bolts (4) and
remove the side cover.
② Illuminate the inside of the seawater pump
with a flashlight and inspect. If any of the
following problems are found, disassembly
and maintenance are necessary.
Impeller blades are cracked or nicked.
●
Edges or surfaces of the blades are
marred or worn. The impeller must be
replaced periodically every 2000 hrs.
Wear plate is damaged.
●
③ If no damage is found when inspecting the
inside of the pump, replace the side cover.
Fit the O-ring to the groove of the joint face
before replacing the side cover.
If water leaks continuously from the water drain pipe beneath the seawater pump during operation,
disassembly and maintenance (replacement of the mechanical seal) are necessary.
When disassembly and maintenance of the seawater pump are necessary, consult your Y
dealer or distributor.
(2) Adjustment of Intake / Exhaust Valve Clearance (2nd time & after)
This maintenance requires specialized knowledge. Consult your Y
Adjustment is necessary to maintain the correct timing for the opening and closing of valves.
Neglecting adjustment will cause the engine to run noisily and result in reduced power output and
other damage.
(3) Inspecting and Adjusting Fuel Injection Valves (2nd time & after)
This maintenance requires specialized knowledge. Consult your Y
Fuel injection must be adjusted to ensure good engine performance.
(4) Lapping of Intake / Exhaust Valves
This maintenance requires specialized knowledge. Consult your Y
Adjustment is necessary to maintain proper contact of the valves and seats.
→ See 4.9.1(2)
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Seawater pump
[ NOTICE ]
When the impeller has been disas-
●
sembled, be careful to replace it so
that it moves in the correct direc-
tion. The seawater pump turns
clockwise, however, the impeller
blades turn counterclockwise.
When turning the engine by hand, be
●
sure to turn it in the correct direction.
Turning it in the opposite direction
damages the blades of the impeller.
dealer or distributor.
ANMAR
dealer or distributor.
ANMAR
ANMAR
Direction of impeller
blades
Direction of
shaft rotation
ANMAR
dealer or distributor.