14. PERIODIC SERVICE
14-14
SA221/324/424 Operation Manual
■ Check and Clean the Electrical System
Regularly check the following points:
1. Wiring harness clamps:
• Replace as necessary.
2. Wiring insulation:
• Replace if cracked or damaged.
3. Connectors and terminals:
• Tighten if loose.
• Clean if contaminated.
• Replace if damaged or discolored.
4. Instrument panel:
• Make sure all switches and gauges are operating
correctly.
• Contact YOUR LOCAL YANMAR TRACTOR
DEALER for technical assistance.
■ Check the Hydraulic Hoses
●Check the conditions of the hydraulic hoses.
Replace as necessary.
●Check for transmission hydraulic oil leakage.
●Check for loose bolts.
■ Inspect the Alternator/fan Belt
●Perform a visual inspection on the alternator/fan
belt.
●Check for loose alternator/fan belt tension or
damaged alternator/fan belt.
For more information on maintenance work on the
alternator/fan belt, for detail, see "Service the
Alternator/Fan Belt" on page 14-17.
■ Check and Replace the Battery
For details, see "1. Battery" on page 15-1.
■ Check the Fuses
For details, see "2. Fuses" on page 15-4.
■ Check the Light Bulbs
For details, see "3. Bulb" on page 15-5.
To avoid personal injury:
●Always replace damaged wires or
connections immediately and tighten any
loose terminal or connector.
●Loose or damaged wires, terminals or
connectors can result to:
• poor performance of the tractor
• damage to electrical components
• shortens battery life
• short circuit which consequently can pose a
fire hazard
●Never use a fuse with a larger capacity than
the recommended.
●Do not attempt to bypass the fuse system
which could result to:
• personal injury
• damage to electrical components
• pose a fire hazard
●Make sure plug and unplug any wiring
connection that is protected by a waterproof
plug and ensure that the connection is sealed
securely and are properly after assembly.
●Regularly clean around the battery, all
electrical wiring, the engine and the exhaust
system before attempting to start or operate
the tractor.
●Any accumulated dirt, fuel, grease or other
deposits poses a fire hazard.
IMPORTANT
●Never allow high pressure water sprayed directly
to the battery, wiring, terminals, connectors,
electrical components or the instrumental panel.
●Doing so can cause an electrical malfunction.
Avoid injury!
●Avoid connecting the hoses to the hydraulic
quick couplers before the hydraulic system
pressure has been fully relieved.
●When checking for leaks, run a piece of
cardboard or wood block along the hydraulic
lines and connections.
●Avoid getting in contact with high pressure
transmission hydraulic oil.
• pressurized transmission hydraulic oil can:
• penetrate the skin and other body parts
• cause serious injury
●Immediately see a doctor if transmission
hydraulic oil penetrates the skin or other body
parts.
• transmission hydraulic oil must be
surgically removed
• gangrene may develop
3. Check and Replace as
Necessary
SA221_324_424_OperatorsManual.book 14 ページ ２０１８年６月４日 月曜日 午後５時１９分
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