5-2. Checking/Replacing Cup, Tip, And Electrode

CAUTION

OVERTIGHTENING will strip threads.

T IP AND EL ECT RO DE WEAR BEYO ND

Do not overtighten electrode, tip, and cup during assembly.

RECO MMENDED VAL UES or OPERAT IO N

Do not cross-thread parts causing stripping.

WITHOUT TIP OR ELECTRODE can damage

Use care during torch assembly and parts replacement.

torch.

Inspect cup, tip, and electrode before cutting or whenever cutting

 

 

 

 

speed has been significantly reduced.

 

 

Do not operate torch without a tip or electrode in place.

 

 

Be sure to use genuine replacement parts.

 

 

A good practice is to replace both the tip and electrode at the same

 

 

 

time.

Do not overtighten electrode.

4

2

Turn Off cutter, and disconnect in- put power.

1 Shield Cup

Remove shield cup. Check shield cup for cracks, and replace if need- ed. Also, replace cup if it does not cover the tip.

2Tip

3Opening

Remove tip. Check tip, and replace if opening is deformed or 50% over- size. If inside of tip is not clean and bright, clean with steel wool. Be sure to remove any pieces of steel wool afterwards.

4 Electrode

Check electrode. If center has a pit more than a 1/16 in (2 mm) deep, re- move and replace electrode using supplied wrench. Do not overtighten.

5 Standoff Guide

Carefully reassemble parts in re- verse order.

 

4

Thread Size for Electrode:

3

 

5/16 - 24

 

 

1

New

 

 

1/16 in

 

2

(2 mm)

 

 

Pit

 

5

 

 

New

Worn

Tools Needed:

Worn

(Supplied 171 875)

Ref. ST-800 897 / ST-800 973

Figure 5-2. Checking/Replacing Cup, Tip, And Electrode

OM-1592 Page 9

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Image 15
Miller Electric MC-80M owner manual Checking/Replacing Cup, Tip, And Electrode, Overtightening will strip threads

MC-80M, MC-80 specifications

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