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7-3 Changing the Liner
A. Changing Bernard Conventional Liner
1. Remove front-end consumables and lay cable straight.
2. Using a 10 mm wrench, turn liner counterclockwise until it is
free from the power pin. Remove liner from gun assembly.
3. With cable laying straight, insert new liner into power pin and
feed through gun using short strokes to prevent kinking. Twist
liner clockwise if necessary.
4. Use a 10 mm wrench to turn liner lock clockwise to tighten into
power pin.
5. Trim to dimensions shown in the New Liner Trim Lengths
chart shown below.
6. Remove all burrs from end of liner and replace gas diffuser
retaining head, contact tip and nozzle.
New Liner Trim Lengths
Centerfire Diffuser Part Number
D-1
D-1T
D-1T-5
DS-1
DS-1T
DW-1
Quik Tip Diffuser Part Number
D114
D114Q
D118
D118Q
D118QLL
D1FQ
D218
TOUGH LOCK Retaining Head Part Number
ALL
16
OM-BTB-2.4
Liner Trim Length
9/16"
14.3 mm
13/16"
20.6 mm
13/16"
20.6 mm
9/16"
14.3 mm
5/8"
15.9 mm
1/4"
6.4 mm
Liner Trim Length
5/8"
15.9 mm
9/16"
14.3 mm
3/4"
19.1 mm
3/4"
19.1 mm
1-5/16"
33.3 mm
7/8"
22.2 mm
7/8"
22.2 mm
Liner Trim Length
3/4"
19.1 mm
Figure 7-D
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