Hobart Welding Products OM-227 978B manual Changing Drive Roll Or Wire Inlet Guide

7-4. Changing Drive Roll Or Wire Inlet Guide

1

1Inlet Wire Guide Securing Screw

2Inlet Wire Guide

Loosen screw. Slide tip as close to drive rolls as possible without touching. Tighten screw.

3 Retaining Pin

2

Tools Needed:

4

3

To remove drive roll, push drive roll in and rotate it (1/4 turn) to the open slot and slide it out over the retaining pin.

To secure drive roll, locate open slot and push drive roll completely over retaining pin, then rotate drive roll (1/4 turn) to closed slot.

4 Drive Roll

The drive roll consists of two different sized grooves. The stamped markings on the end surface of the drive roll refers to the

.030/.035 Groove

Stamped .024

.023/.025 Groove

Stamped .030/.035

groove on the opposite side of the drive roll. The groove closest to the motor shaft is the proper groove to thread (see Section 5-11).

Ref. 803 714-A

7-5. Replacing Gun Contact Tip

Y Turn Off power before replacing contact tip.

1 Nozzle

2 Contact Tip

Cut off welding wire at contact tip.

Remove nozzle.

Remove contact tip and install new contact tip. Reinstall nozzle.

2

1

Tools Needed:

Ref. 802 399-A

OM-227 978 Page 23