Tweco VAF4 Transmig - Manual (Page 50)

TRANSMIG VAF4
INSTALLATION, OPERATION AND SETUP 3-32 Manual 0-5231
Art # A-11253
Inlet Guide
Pressure Roll Arm
Pressure Adjusting Knob
Feed Roll
Pressure Roll
Figure 3-32 Wire Feeding
3.18 Feed Roll Pressure Adjustment
The roll on the swing arm applies pressure to the grooved roll via an adjustable tension device. The pressure
adjusting knobs should be set to a minimum pressure that will provide satisfactory wire feed without slippage. If
slipping occurs, and inspection of the wire out of the MIG Gun reveals no deformation or wear, the conduit liner
should be checked for kinks or clogging from metal flakes. If this is not the cause of slipping, the Feed Roll pres-
sure can be increased by rotating the pressure adjusting knobs clockwise. The use of excessive pressure may
cause rapid wear of the Feed Roll, motor shaft and motor bearings.