Drive Roll Installation And Pressure Setting; Changing Wire Feed Rolls And Guide Tubes For 2-Roll Wire Feeders - Lincoln Electric LN-9 SVM127-A Service Manual

B-9
DRIVE ROLL INSTALLATION AND
PRESSURE SETTING
CHANGING WIRE FEED ROLLS AND GUIDE
TUBES FOR TWO-ROLL WIRE FEEDERS
To change drive or idle rolls on a two-roll wire feeder,
refer to Figure B.3 and perform the following steps:
1. Loosen idle roll spring pressure screw.
2. Remove clamping collar from the drive shaft.
3. Install drive roll and replace clamping collar.
Tighten screw.
LOCKING
OPERATION
FIGURE B.3 – 2 ROLL WIRE FEED MECHANISM
CLAMPING
OUTGOING
COLLAR
GUIDE TUBE
SCREW
SCREW
IDLE ROLL
SHAFT SCREW
LN-9 Wire Feeder
4. Remove idle roll shaft screw - install idle roll.
Replace screw and tighten.
NOTE: The Aluminum Wire Drive Roll Kits have
one-piece drive rolls and idle rolls with a larger
chamfer on one side, instead of gear teeth. This
larger chamfer side must face the gearbox when
installed. The side with the smaller chamfer and
wire size stencil must be installed facing out.
5. Remove the large ingoing guide from rear brass
block by loosening screw.
INGOING GUIDE TUBE
CLAMPING SCREW
DRIVE
ROLL
SCREW
GUIDE
TUBE
IDLE IDLE ROLL SPRING
ROLL
PRESSURE SCREW
B-9
INGOING
GUIDE
TUBE