Valley FABRICATOR 251, Руководство по обслуживанию

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August 22, 2008 4-9
SERVICE MANUAL FABRICATOR 251
4.04 Installing A New Wire Conduit
1. Be su r e the MIG gun cable is a rr anged in a st r aight line, f r ee f r om twists, when installing o r r emoving a wi r e
conduit. Remove the old conduit by fi r st r emoving the MIG gun nozzle, contact tip, insulato r and gas diffuse r .
Then loosen Allen sc r ews in the conducto r tube and connecto r plug and pull the old wi r e conduit out of the
cable assembly f r om the connecto r plug end.
2. To install a new conduit, fi r st inspect the o- r ing gas seal on the conduit fo r cuts o r damage. Sta r t f r om the
connecto r plug end of the assembly and begin pushing the conduit th r ough the connecto r plug, cable assembly
and into the gun. If the conduit should lodge along the way, gently whip o r wo r k the cable assembly to aid
fo r wa r d movement.
When the conduit stop meets the end of the connecto r plug and the new r aw end extends th r ough the end of
the conducto r tube on the welding gun, tighten the Allen sc r ew in the connecto r plug onto the conduit to
p r event its backwa r d movement.
CONDUCTOR TUBE
CONDUIT LINER
CONDUIT LINER
1 1/16"
(27mm)
Art # A-08565
REMOVE
CON
S UMABLE S
ALLEN S CREW
O-RING S
ALLEN S CREW
CONNECTOR PLUG
Figu r e 4-17: Conduit T r im Length
NOTE
When the conduit is fully inse r ted into the cable assembly and the conduit stop is fi r mly against the
Connecto r Plug, the “ r aw end” of the conduit will p r ot r ude out of the open end of the gun conducto r tube.
T r im the conduit as shown in Figu r e 4-14. The t r immed end which seats in the Gas Diffuse r must be filed
and r eamed smooth on the inside and outside r adii so wi r e feed will not be obst r ucted.
3. Replace Gas Diffuse r , Contact Tip, Insulato r and Nozzle.
4. Tighten the Allen sc r ew in the conducto r tube.
CAUTION
Do not ove r tighten the conducto r tube sc r ew as this action will r esult in the disto r tion of the conduit and
will lead to wi r e feedability p r oblems.