Lincoln Electric HELIX T55, Operator'S Manual

Page: 22 / 52

13 INSTALLATION 13
Change Lower Drive Roll
With the top still pivoted away, drive the wire feed
motor until the set screw for the lower drive roll is
exposed. Loosen the set screw (see Figure 24
–
Set Screw).
FIGURE 26 – ROLLER SET SCREW 2
Drive the wire feed motor again until the motor key
is at the top of the rotation (see Figure 25
– Motor
Key).
Slide the lower drive roll off the front of the motor
shaft.
Motor key is secured by lower drive roll.
Take care not to lose the motor key
when removing lower drive roll.
FIGURE 27 – MOTOR KEY
Ensure that the motor key is in place. Slide the cor-
rect drive roller back onto the motor shaft.
Drive the wire feed motor until the set screw is ac-
cessible. Tighten the set screw.
Attach the cover plate back to the front of the wire
feed unit and adjust the tension knob back to the
proper setting.