Lincoln Electric SVM194-A service manual Kubota V2203M Engine, D3.3, Air Bleeding, Valve

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D3.3	MAINTENANCE			D3.3
of the pigtail. A complete set of replacement brushes		PURGING AIR FROM FUEL SYSTEM
Replace brushes when they wear within 1/4”(3.5mm)		(KUBOTA V2203M ENGINE)
should be kept on hand. Lincoln brushes have a
enced maintenance man seat these brushes by lightly			WARNING
curved face to fit the commutator. Have an experi-
stoning the commutator as the armature rotates at full		Keep fuel clear of open flames or arcs, allow
speed until contact is made across the full face of the		engine to cool before working on the fuel system.
brushes. After stoning, blow out the dust with low pres-		Wipe up any spilled fuel and do not start engine
sure air.		until fumes clear.
To seat slip ring brushes, position the brushes in place.		------------------------------------------------------------------------
Then slide one end of a piece of fine sandpaper		If the engine is running rough and you suspect air has
between slip rings and brushes with the coarse side		been trapped in the fuel system, (e.g. the engine was
against the brushes. With slight additional finger pres-		allowed to run out of fuel) perform the following steps
sure on top of the brushes, pull the sandpaper around		using qualified personnel:
the circumference of the rings - in direction of rotation		1. Fully open the air bleeding valve by turning it
only - until brushes seat properly. In addition, stone slip
ring with a fine stone. Brushes must be seated 100%.			counter clockwise, it is located on top of the fuel
Arcing or excessive exciter brush wear indicates a pos-			injection pump next to the oil filler. (see figure D3.3)
sible misaligned shaft. Have an authorized Field
Service Shop check and realign the shaft.				Air Bleeding
IDLER MAINTENANCE
CAUTION				Valve
Before doing electrical work, disconnect the bat-
tery.
------------------------------------------------------------------------			FIGURE D3.3
When installing a new battery or using a jumper battery
to start the engine, be sure the battery polarity is con-		2.	Turn the engine by pressing the start button until
nected properly. The correct polarity is negative
ground. Damage to the engine alternator and the			the engine runs smoothly (this should take approx-
Engine Control Unit can result from incorrect connec-		3.	imately 10 seconds).
tion.			Fully close the air bleeding valve by turning it clock-
1. Proper operation of the idler requires good ground-			wise.
ing of the Engine Control Unit, current sensing		Contact your Kubota Engine repair facility if problems
printed circuit board and battery.		persist.
2. 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 replacement item number.

CLASSIC® 300D & 300G