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BEARINGS
This welder is equipped with a
When greasing the bearings, keep all dirt out of the area. Wipe the fittings completely clean and use clean equipment. More bearing failures are caused by dirt introduced during greasing than from insufficient grease.
COMMUTATOR AND BRUSHES
WARNING
Uncovered rotating equipment can be dangerous. Use care so your hands, hair, clothing or tools do not catch in the rotating parts. Protect yourself from particles that may be thrown out by the rotat- ing armature when stoning the commutator.
The generator brushes are properly adjusted when the welder is shipped. They require no particular attention. DO NOT SHIFT THE BRUSHES or adjust the rocker setting. Shifting of the brushes may result in:
•Change in machine output
•Commutator damage
•Excessive brush wear
IDLER MAINTENANCE
CAUTION
Before doing electrical work on the idler printed circuit board, disconnect the battery.
When installing a new battery or using a jumper bat- tery to start the engine, be sure the battery polarity is connected properly. The correct polarity is negative ground. Damage to the engine alternator and the printed circuit board can result from incorrect connec- tion.
1.The solenoid plunger must work freely and not bind. Dust the plunger about once a year with graphite powder.
2.Proper operation of the idler requires good ground- ing of the printed circuit board, current sensor and battery.
3.Idler solenoid is activated for high idle.
4.If desired, the welder can be used without automat- ic idling by setting the “Idler” switch to the “High” position.
NAMEPLATES
Whenever routine maintenance is performed on this machine - or at least yearly - inspect all nameplates and labels for legibility. Replace those which are no longer clear. Refer to the parts list for the replace- ment item number.
Periodically inspect the commutator and brushes by removing the covers. DO NOT remove or replace these covers while the machine is running.
Commutators require little attention. However, if they are black or appear uneven, have them cleaned by an experienced maintenance man using fine sandpaper or a commutator stone. Never use emery cloth or paper for this purpose.
Replace brushes when they wear within 1/4” of the pigtail. A complete set of replacement brushes should be kept on hand. Lincoln brushes have a curved face to fit the commutator. Have an experienced mainte- nance man seat these brushes by lightly stoning the commutator as the armature rotates at full speed until contact is made across the full face of the brushes. After stoning, blow out the dust with low pressure air.
Arcing or excessive exciter brush wear indicates a possible misaligned shaft. Have an authorized Field Service Shop check and realign the shaft.
PURGING AIR from FUEL SYSTEM (Perkins 104.22 Engine)
Keep fuel clear of open flames or arcs, allow engine to cool before working on the fuel system. Wipe up any spilled fuel and do not start engine until fumes clear.
If the engine is running rough and you suspect air has been trapped in the fuel system, (EG. the engine was allowed to run out of fuel) perform the following steps using qualified personnel:
PIPELINER 200D
