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Return to Section TOC Return to Master TOC
Return to Section TOC Return to Master TOC
D1.2 | MAINTENANCE |
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| MAINTENANCE |
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| 4. When necessary, remove the sediment bowl, if so | ||||||||
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| WARNING |
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| equipped, from beneath the fuel | tank and clean out | ||
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| any accumulated dirt and water. |
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| Have qualified personnel do the maintenanc | e | 5. Follow the engine service schedule in this manual | ||||||||
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| work. Turn the engine off before working inside | ||||||||||
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| the machine. In some cases, it may be necessary | and the detailed maintenance and troubleshooting in | |||||||||
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| to remove safety guards to perform required | the engine manufacturerʼs manual. |
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| maintenance. Remove guards only when neces- | Cooling System |
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| sary and replace them when the maintenance |
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| requiring their removal is complete. Always use | The Classic® 300 D is equipped with a pressure radi- | |||||||||
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| the greatest care when working near moving | ator. 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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| blower fan. If a problem cannot be corrected by | engine. When antifreeze is needed, always | use the | ||||||||
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| following the instructions, take the machine to | permanent type. Capacity = 9.5 qts (9.0 Ltrs.). |
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| the nearest Lincoln Field Service Shop. | Bearings |
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| ELECTRIC SHOCK can kill. |
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| This welder is equipped with a | |||
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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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| greasing is far worse than insufficient greasing. | |||
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| • Use in open, well ventilated areas or | When greasing the bearings, keep all dirt out of the | |||||
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| vent exhaust outside. |
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| area. Wipe the fittings completely clean and use clean | |||
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| equipment. More bearing failures are caused by dirt | |||
introduced during greasing than from insufficient | ||||||||||||
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| MOVING PARTS can injure. |
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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 | Uncovered rotating equipment can be dangerous. | |||||||||||
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| front of this operatorʼs manual. |
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| Use care so your hands, hair, clothing or tools do | ||||||
not catch in the rotating parts. Protect yourself | ||||||||||||
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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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1. Blow out the welder and controls with an air hose at | Shifting of the commutator brushes may result in: | |||||||||||
- Change in machine output |
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least once every two months. In particularly dirty loca- | - Commutator damage |
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tions, this cleaning may be necessary once a week. | - Excessive brush wear |
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Use low pressure air to avoid driving dirt into the insu- | Periodically inspect the commutator, slip rings, and | |||||||||||
lation. |
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| brushes by removing the covers. DO NOT remove or | ||||||||||
2. “Current Range Selector” contacts should not be | replace these covers while the machine is running. | |||||||||||
greased. To keep the contacts clean, rotate the current | Commutators and slip rings require little attention. | |||||||||||
control through its entire range frequently. Good prac- | However, if they are black or appear uneven, have | |||||||||||
tice is to turn the handle from maximum to minimum | them cleaned by an experienced maintenance man | |||||||||||
setting twice each morning before starting to weld. | using fine sandpaper or a commutator stone. Never | |||||||||||
3. Put a drop of oil on the “Current Range Selector” | use emery cloth or paper for this purpose. |
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shaft at least once every month. |
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