Tweco 300 Ultra-Cut - Manual (Page 61)

Manual No. 0-4819 Ultra-Cut 300 3-37 INSTALLATION
3.19 Install Consumable Torch Parts
1. Install the consumable parts as follows to ensure proper operation. These steps will help ensure that parts
are seated correctly.
Art # A-03887
WARNINGS
Do not install consumables into the Cartridge
while the Cartridge is attached to the Torch Head.
Keep foreign materials out of the consumables and Cartridge.
Handle all parts carefully to avoid damage,
which may affect torch performance.
1. Check the appropriate cut chart for the right combination of parts for the cutting application.
2. Stack the consumable parts together.
3. Insert the stack of consumable parts into the cartridge. Ensure that the large O-ring on the torch tip fits
completely into the cartridge. If any part of the O-ring protrudes from the cartridge, the parts are not seated
properly.
4. 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.
5. 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.