Tweco M-42 RPT - Manual (Page 6)

January 23, 2004 6 Manual 0-2856
4. Remove the gas distributor and check for excessive
wear, plugged gas holes, or discoloration. Replace if
necessary.
5. Remove the SureLok Electrode by pulling it straight
out of the Torch Head. Refer to the following figure
and check the face of the electrode for excessive wear.
Worn Electrode
New Electrode
A-03026
6. Reinstall the SureLok Electrode by pushing it straight
into the torch head until it clicks.
7. Reinstall the gas distributor and tip into the torch head.
8. Hand tighten the shield cup until it is seated on the
torch head. If resistance is felt when installing the
cup, check the threads before proceeding.
Electrode Selection
The new SureLok PCH / M-42 RPT Torch offers a new
General Purpose Electrode. The information supplied in
this section is to describe the new electrode.
General Purpose SureLok Electrode (Cat. No. 9-6542)
• General Purpose - Good performance with all
systems.
• Design of electrode is similar to previous designed
electrodes used in the PCH / M-25, 26, 28, 35, and
40 Torches.
• New patented locking design offers improved
parts life, excellent piloting, improved arc trans-
fer distance and excellent arc characteristics as
compared to older electrode designs.
• The General Purpose electrode is the standard
electrode offered with SureLok RPT Replacement
Torches providing good all around characteristics
and performance when applied to the wide range
of older Thermal Dynamics Systems and differ-
ent manufacturers’ systems.
• New innovative patented "fluted" design.