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Return to Section TOC Return to Master TOC
Return to Section TOC Return to Master TOC
D5.2 | MAINTENANCE |
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| SAFETY PRECAUTIONS |
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| • | equipped, from beneath the fuel | tank and clean out | |||||||
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| WARNING |
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| When necessary, remove the sediment bowl, if so | ||||
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| any accumulated dirt and water. |
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| H | ave qualified personnel do the maintenanc | e | • | Follow the engine service schedule in this manual | |||||||
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| work. Turn the engine off before working inside |
| and the detailed maintenance and troubleshooting in | |||||||||
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| the machine. In some cases, it may be necessary |
| the engine manufacturerʼs manual. |
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| to remove safety guards to perform required |
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| sary and replace them when the maintenance | COOLING SYSTEM |
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| maintenance. Remove guards only when neces- | The Classic® 300G is equipped with a pressure radia- | ||||||||||
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| requiring their removal is complete. Always use | |||||||||||
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| the greatest care when working near moving | tor. Keep the radiator cap tight to prevent loss of | ||||||||||
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| parts. |
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| coolant. Clean and flush the cooling system periodical- | ||||||||
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| Do not put your hands near the engine cooling | ly to prevent clogging the passage and overheating the | ||||||||||
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| engine. When antifreeze is needed, always | use the | ||||||||||
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| blower fan. If a problem cannot be corrected by | permanent type. Capacity = 9.9 qts (9.4 Ltrs.). |
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| following the instructions, take the machine to | BEARINGS |
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| the nearest Lincoln Field Service Shop. |
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This welder is equipped with a | |||||||||||||
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| ELECTRIC SHOCK can kill. |
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| • Do not touch electrically live parts or | bearing having sufficient grease to last indefinitely | ||||||
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| electrode with skin or wet clothing. | under normal service. Where the welder is used con- | ||||||
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| • Insulate yourself from | work and | stantly or in excessively dirty locations, it may be nec- | |||||
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| ground |
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| essary to add one half ounce of grease per year. A pad | ||||
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| • Always wear dry insulating gloves. | of grease one inch wide, one inch long, and one inch | ||||||
high weighs approximately one half ounce. Over- | |||||||||||||
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| ENGINE EXHAUST can kill. |
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| • Use in open, well ventilated areas or | greasing is far worse than insufficient greasing. | ||||||
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| vent exhaust outside. |
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| When greasing the bearings, keep all dirt out of the | ||||
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| area. Wipe the fittings completely clean and use clean | ||||
equipment. More bearing failures are caused by dirt | |||||||||||||
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| MOVING PARTS can injure. |
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| introduced during greasing than from insufficient | ||||
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| • Do not operate with doors open or | grease. |
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| guards off. |
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| COMMUTATOR AND BRUSHES |
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| • Stop engine before servicing. |
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| • Keep away from moving parts. |
| WARNING |
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| See additional warning information at |
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| front of this operatorʼs manual. |
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| Uncovered rotating equipment can be dangerous. | |||||||
not catch in the rotating parts. Protect yourself | |||||||||||||
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| Use care so your hands, hair, clothing or tools do | ||||
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| from particles that may be thrown out by the rotat- | ||||
GENERAL INSTRUCTIONS |
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| ing armature when stoning the | commutator. | |||||||||
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| Shifting of the commutator brushes may result in: | |||||||||||
• Blow out the welder and controls with an air hose at | |||||||||||||
| - Change in machine output |
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| least once every two months. In particularly dirty |
| - Commutator damage |
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| locations, this cleaning may be necessary once a |
| - Excessive brush wear |
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| week. Use low pressure air to avoid driving dirt into | Periodically inspect the commutator, slip rings, and | |||||||
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| the insulation. |
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| brushes by removing the covers. DO NOT remove or | |||||
• “Current Range Selector” contacts should not be | replace these covers while the machine is running. | ||||||||||||
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| greased. To keep the contacts clean, rotate the cur- | Commutators and slip rings require little attention. | |||||||
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| rent control through its entire range frequently. Good | However, if they are black or appear uneven, have | |||||||
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| practice is to turn the handle from maximum to mini- | them cleaned by an experienced maintenance man | |||||||
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| mum setting twice each morning before starting to | using fine sandpaper or a commutator stone. Never | |||||||
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| weld. |
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| use emery cloth or paper for this purpose. |
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•Put a drop of oil on the “Current Range Selector” shaft at least once every month.
