Miller Electric 140, M-10 Gun Changing Drive Roll Or Wire Inlet Guide, Replacing Gun Contact Tip

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6-4. Changing Drive Roll Or Wire Inlet Guide

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.030/.035 Groove	.024 Groove
Stamped .024	Stamped .030/.035

1 Inlet Wire Guide

Remove guide by pressing on barbed area or cutting off one end near housing and pulling it out of hole. Push new guide into hole from rear until it snaps in place.

2 Drive Roll

The drive roll consists of two differ- ent sized grooves. The stamped markings on the end surface of the drive roll refers to the groove on the opposite side of the drive roll. The groove closest to the motor shaft is the proper groove to thread (see Section 4-11).

3 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.

802 984

6-5. 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.

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Tools Needed:

Ref. 802 399-A

OM-225 311 Page 37