Routine Maintenance; Periodic Maintenance; Drive Rolls And Guide Tubes; Control Box - Lincoln Electric LN-8 SVM132-A Service Manual

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ROUTINE MAINTENANCE

DRIVE ROLLS AND GUIDE TUBES

After feeding every coil of wire, inspect the drive roll
section. Clean the assembly as necessary. Do not use
solvent to clean the drive roll assembly as it may wash
the lubricant out of the bearings. The drive rolls and
guide tubes are stamped with the wire sizes they will
feed. If a wire size other than that stamped on the rolls
is to be used, the rolls and guide tubes must be
changed.
The drive rolls for 0.068 and 0.120 in. (1.7 thru
3.0 mm) wire have a double set of teeth so they can
be reversed for additional life. Between the two
knurled rolls is a shim washer which limits the damage
to the electrode if wire feeding problems occur. Drive
rolls for 1/16 in. (1.6 mm) and smaller wire have no
teeth and are not reversible.
Refer to the instructions included with the drive roll kit
for installation and replacement of the drive rolls on
the wire feeder.

WIRE REEL MOUNTING

To prolong the life of the reel shaft on the 50 to 60 lb
coils, periodically coat it with a thin layer of grease. No
maintenance to the two position brake is required. If
the brake shoe wears through to metal, replace the
brake assembly.
MAINTENANCE

PERIODIC MAINTENANCE

CONTROL BOX

Every six months, open and inspect the control sec-
tion. The accumulated dirt should be gently blown off
all the electrical components. Be sure the air that is
used is dry. Check all relay contacts.

WIRE DRIVE MOTOR AND GEARBOX

Every year, inspect the gearbox and coat the gear
teeth with a moly-disulfide filled grease. Do not use
graphite grease.
Every six months, check the motor brushes. Replace
them if they are less than 1/4 in. (6.4 mm) long.

GUN AND CABLE MAINTENANCE

For instructions on periodic maintenance for the weld-
ing gun and cables, refer to the manual for your spe-
cific model of welding gun.
LN-8
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