Magnum MMG75D Manual del operador descargar pdf (Pagina 38)

BELT TENSION

John Deere engines use two types of belt tensioners: manual and automatic. Adjust the belt using the manual

tensioner according to the manufacturer’s specifications. The automatic tensioner cannot be adjusted or repaired

and is designed to maintain proper tension over the belt’s life. Units with the automatic belt tensioner must be inspected

according to the manufacturer’s specifications.

ENGINE AND GENERATOR MAINTENANCE

Check the engine oil level daily before starting the engine. DO NOT start the generator if the oil level is below the

“ADD” mark on the dipstick. The normal operating level for the engine oil is anywhere in the crosshatch pattern

between the “FULL” and “ADD” markings. Add oil to the engine only if the level is below the “ADD” mark on the

bottom of the crosshatch pattern. DO NOT OVERFILL the crankcase. Consult the engine operator’s manual for the

proper grade of oil, including special operating conditions such as a change in season or climate.

Check the coolant level daily. The coolant is checked by visually inspecting the level in the coolant overflow jug,

located near the radiator. The normal operating level is anywhere between the “FULL” and “ADD” markings on the

overflow jug, with the optimum level noted as “NORMAL RANGE”. WHEN THE ENGINE IS STOPPED AND

COMPLETELY COOL, coolant may be added directly to the overflow jug. Consult the engine operator’s manual for

coolant recommendations and proper mixture.

Check the condition of the air filter by viewing the level of vacuum draw on the filter minder gauge. Replace the air

filter when the yellow center bar reaches the red section on the gauge (20 in. H

0).

Poorly maintained equipment can become a safety hazard. In order for the equipment to operate safely and properly

over a long period of time, periodic maintenance and occasional repairs are necessary. NEVER perform even routine

service (oil/filter changes, cleaning, etc.) unless all electrical components are shut off. When servicing this equipment

always follow the instructions listed below.

• Make sure the engine start switch is turned to the “OFF/O” position.

• Verify that all circuit breakers are open (“OFF/O”).

• Activate (push in) the “EMERGENCY STOP” switch.

• Disconnect the negative (-) terminal on the battery.

• Attach a “DO NOT START” sign to the control panel. This will notify everyone that the unit is being serviced

and will reduce the chance of someone inadvertently trying to start the unit.

• If the unit is connected to a remote start or transfer switch, make sure the remote switch is also off and tagged.

• Never wash the unit with a high pressure hose or with any kind of power washer.

• Never wash the engine block or fuel tank with a power washer or steam cleaner. Water may enter the cabinet

and collect in the generator windings or other electrical parts, causing damage.

• If the unit is stored outside, check for water inside the cabinet and generator before each use. If wet, dry the

unit thoroughly before starting.

DAILY WALK AROUND INSPECTION

Look for conditions that could hinder performance or safety, such as (but not limited to) oil/coolant/fuel leakage,

blocked vents, loose/missing hardware and electrical connections.

Visually inspect the fan belt for cracks, fraying, stretching and that the belt is properly seated in pulley grooves.

Replace the belt according to the manufacturer’s recommendations.

Note: At the 500 hour/12 month service interval, it is recommended that the belt be removed and checked for wear.

While the belt is removed, inspect pulleys and bearings. Rotate and feel for hard turning or unusual sounds. If pulleys

or bearings need replacement, contact John Deere.

CAUTION

Failure to perform a daily inspection may result in serious damage to the prime mover.

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Magnum MMG75D Manual del operador Pagina 38

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