Maintenance & Inspection - Yanmar 6LPA-DTP Operación Manual

5. MAINTENANCE & INSPECTION
Conduct Periodic Inspection for Your Safety.
The functions of engine components will degenerate and engine performance will fall according to
the use of the engine. If countermeasures are not taken, you may encounter unexpected troubles
while cruising at sea. Consumption of fuel or lube oil may become excessive and exhaust gas and
engine noise may increase. These all shorten the life of the engine.
Daily and periodic inspection and servicing increase your safety operation.
Inspect Before Starting.
Make it a daily rule to inspect before starting. →See [4.1 Inspection Before Starting]
Monitor the hour meter and conduct periodic inspections.
Keep a daily record of operation and maintenance. When the time for an inspection approaches,
study the relevant pages in the Operation Manual. Inspections should be made after every 50, 125
(6 mos.), 250(1 yr.), 500 (2 yrs.), 1000(4 yrs.), and 1250 (5 yrs.) hours of use.
Use Genuine Y
Be sure to use genuine Y
will reduce engine performance and shorten the life of the engine.
Specialty technicians are ready to assist you with periodic inspections and maintenance.
Consult your Y
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Always Have Servicing Tools On Hand.
Keep servicing tools close to the machinery and ready for use in inspections.
Tightening Torque of Bolts & Nuts.
It is important to tighten bolts and nuts properly to the correct tightening torque. Over-tightening
damages the threads of the bolts and nuts and ruins them. Insufficient tightening causes oil leak-
age from the installation face or damage to parts. Important parts must be tightened with a torque
wrench to the correct tightening torque and in the right order.
Consult with your dealer or distributor if servicing requires the removal of parts.
The tightening torque for standard nuts & bolts is listed below:
[NOTICE]
● Apply the following tightening torque to bolts having " 7 " on the head.
(JIS strength classification : 7 T )
○ Tighten bolts with no " 7 " mark to 60% tightening torque.
○ If the parts to be tightened are made from aluminum alloy, tighten the bolts to
80% tightening torque.
Bolt dia. pitch
X
Tightening torque
(Kgf-m)
Parts.
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parts for consumable and replacement parts. Use of other parts
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dealer or distributor in accordance with the service agreement.
mm M 6 1.0 M 8
X
N . m
10.8±1.0 25.5±2.9
(2.6
(1.1±0.1)
1.25 M10 1.5 M12
X X
88.3
49.0±4.9
± 0.3) (5.0 ± 0.5) (9.0
_ 35 _
1.75 M14 1.5 M16
X X
± 9.8 137 ± 9.8
± 1.0) (14.0 ± 1.0) (23.0
7
1.5
X
226 ± 9.8
± 1.0)