Tweco XTTM-300 - Manual (Page 22)

INSTALLATION 3-10 Manual 0-2912
3. Use the removal tool to hold the cartridge assembly, while turning the shield cup onto the cartridge
assembly. When this group is fully assembled, the shield should protrude from the front of the shield cup
0.063" to 0.083" (1.6 - 2.1 mm). Without this protrusion the shield cup is not properly tightened onto the
cartridge assembly.
4. Take the removal tool off the cartridge. Fit the cartridge assembly onto the torch head. The cartridge should
seal to the large O-ring on the torch body as shown. If the cartridge does not seal on the O-ring, the cartridge
is not fully tightened.
CAUTION
Do not force the cartridge if it will not fully tighten. Remove the cartridge
and gently clean the threads on the torch head body with a wire brush.
Apply oxygen-compatible lubricant (supplied with the torch) to the threads.
Torch Head O-Ring
Torch Head
Art # A-07202
0.063 - 0.083"
(1.6 - 2.1 mm)
Protrusion
Installing Assembled Cartridge Onto Torch Head
5. Slide the ohmic clip over the shield cup if using ohmic torch height sensing.
A-03393
Ohmic Clip
6. Connect the wire lead from the height finder to the ohmic clip if using ohmic torch height sensing.
7. Connect the wire lead from the height finder to the ohmic clip.