Lincoln Electric MAGNUM 550 Assembly Download Page 17

D-3

MAINTENANCE

D-3

j.

Install gun tube per section entitled “Gun Tube
and Nozzles”.

k.

Install and trim liner per installation instructions.

Wire Feeder End Repair

(Requires 2 No. S19492-1

Terminals)
a.

Remove the cable liner per the Maintenance
Section.

b.

Remove the feeder end connector, molded gas
plug (or barbed fitting), cable handle nut, plastic
tailpiece, and connector cover (See Figure 6).

NOTE:

In order to remove the cable handle nut,

the tail of the connector cover must be depressed
and the cable handle nut rotated 1/4 turn counter-
clockwise as viewed from the feeder end.

c.

Remove incoming connector from cable by
unscrewing connector nut from incoming connec-
tor. If the cable inner tube is difficult to remove
from the connector assembly, carefully slit it
lengthwise with a knife up to the brass connector.

d.

Move the cable boot, cable handle, and strain
relief toward the middle of the cable past the dam-
aged section.

e.

Cut off the damaged section of cable and strip off
the outer jacket as shown in Figure 3. Be careful
not to cut the insulation on the control wires while
stripping jacket. Strip the red and white control
leads 1/4” (6.4mm) from the end and crimp a new
S19492-1 terminal to each lead. Trim the inner
tube to dimensions shown.

NOTE:

The cable contains four control leads. Any

two control leads can be used, provided the two
colors used are the same at both ends. The extra
leads are spares that can be used if one of the
other leads breaks.

f.

Check that the cable boot, cable handle and strain
relief are on the cable. Slip the connector nut over
the copper strands with the threaded end out.
Assemble incoming connector to cable by forcing
the steel tube of the connector into the inside
diameter of the cable inner tube until the copper
strands are butted against the incoming connector
shoulder. Keeping the copper strands against the
shoulder, pull the connector nut over the copper
strands, engage the incoming connector threads,
and tighten in place. Refer to Figure 4.

NOTE:

For best results, insert a .250” (6.4mm)

diameter rod through the connector and into core
of cable approximately 11.00” (280mm) when
pushing the connector tube into the cable core
tube. To tighten, hold the connector in place while
turning the nut, then remove the rod from the
core. This procedure assures the inner core does
not kink while assembling or tightening.

Position the plastic strain relief such that the
tapered end is 7.10” (180mm) from the incoming
connector (See Figure 6). Lock into place with
steel housing.

g.

Position cable boot and cable handle on cable
and assemble replacement control wire terminals
in place on the cable handle. Insert connector
cover in place. Install tailpiece and fasten to cable
handle with cable handle nut. Refer to Figure 6.

h.

Replace the molded gas plug (or barbed fitting)
and feeder end connector.

i.

Install and trim liner per installation instructions.

Figure 6 

MAGNUM® 550

G A S   P L U G  
O R        
F I T I N G      

F E E D E R   E N D  

C O N N E C T O R

T A I L   P I E C E

C A B L E   B O O T

( 1 8 0   m m )

P R E S S   H E R E   T O
R E M O V E   T H E   C A B L E
H A N D L E   N U T

C A B L E

C A B L E   H A N D L E

C A B L E   H A N D L E   N U T

C O N N E C T O R   C O V E R

I N C O M I N G   C O N N E C T O R

S T R A I N   R E L I E F
  H O U S I N G

S T R A I N   R E L I E F

7 . 1 0 "

Summary of Contents for MAGNUM 550

Page 1: ...your part DO NOT INSTALL OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT And most importantly think before you act and be careful IM475 A M...

Page 2: ...WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase a copy of...

Page 3: ...er for cooling 3 h Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both...

Page 4: ...easily go through small cracks and openings to adjacent areas Avoid welding near hydraulic lines Have a fire extinguisher readily available 6 b Where compressed gases are to be used at the job site sp...

Page 5: ...i s et non inflammables 4 Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir chemise paisse pan t...

Page 6: ...mportant when identifying the correct replacement parts On Line Product Registration Register your machine with Lincoln Electric either via fax or over the Internet For faxing Complete the form on the...

Page 7: ...ders A 6 Installation of Optional Gun Hanger A 6 __________________________________________________________________________________________ Operation Section B Electrodes and Equipment B 1 Making a We...

Page 8: ...1 6mm KP16S 116 625 I D 12 Rec K598 8 25 ft 7 5m 052 1 3mm KP16S 52 KP56S SW KP26CT 62 KP36CT KP45 116 25 KP1951 1 1 16 1 6mm KP16S 116 625 I D 12 Rec K598 9 10 ft 3 0m 5 64 2 0mm KP16S 564 KP56S H KP...

Page 9: ...ailable as a parts order With the trigger pulled in all the way the trigger can be slid forward into the interlock position To release interlock squeeze trigger and slide back The trigger is made of a...

Page 10: ...plug and socket are keyed and must be properly oriented d Place one tubing clamp onto each end of the flexi ble tubing provided approximately 2 51mm in from each end Slide one end of the tubing onto...

Page 11: ...s fitting provided in the kit c Attach the phone plug connector of the gun con trol cable provided to the trigger connector on the front of the Hobart feeder d Place one tubing clamp onto each end of...

Page 12: ...ect easily to a variety of popular Miller wire feeders a Check that the gun liner connector cap liner drive roll s and guide tubes are appropriate for the electrode size being used For K613 3 and K613...

Page 13: ...aterial are included in each kit b Fully push the brass connector end of the gun and cable into the connector receptacle on the outgoing side of the feeder wire drive Tighten the hand screw to clamp d...

Page 14: ...ck Avoiding Wire Feeding Problems Wire feeding problems can be avoided by observing the following gun handling procedures a Do not kink or pull cable around sharp corners b Keep the electrode cable as...

Page 15: ...16 4 8mm Allen wrench Remove coarse thread nozzle and coarse thread insulator assembly Pull gun tube out from gun handle To reinstall insert the gun tube push in as far as possible and retighten screw...

Page 16: ...nsert a 250 6 4mm diameter rod through the connector and into core of cable approximately 5 00 127mm when push ing the connector tube into the cable core tube To tighten hold the connector in place wh...

Page 17: ...ip the connector nut over the copper strands with the threaded end out Assemble incoming connector to cable by forcing the steel tube of the connector into the inside diameter of the cable inner tube...

Page 18: ...7 X 2 M12 X 1 5 THREAD SIZES FOR K598 1 thru 14 MAGNUM 550 CONSUMABLES USED WITH An KP1951 1 or 2 Gun Tube Tweco NO 6 8 32 5 8 18 7 16 20 5 16 24 THREAD SIZES FOR K598 15 thru 18 MAGNUM 550 CONSUMABLE...

Page 19: ...contribute to the machine symptom Step 3 RECOMMENDED COURSE OF ACTION This column provides a course of action for the Possible Cause If you do not understand or are unable to perform the Recommended C...

Page 20: ...rent and or duty cycle welding a Keep as straight as possible Inspect cable and replace if necessary b Remove wire from gun and cable feed in new wire Note any obstruc tion Replace liner if necessary...

Page 21: ...NOTES MAGNUM 550...

Page 22: ...NOTES MAGNUM 550...

Page 23: ...parts or electrode with skin or wet clothing G Insulate yourself from work and ground G No toque las partes o los electrodos bajo carga con la piel o ropa moja da G Aislese del trabajo y de la tierra...

Page 24: ...nd Entl ftung des Arbeitsplatzes G Mantenha seu rosto da fuma a G Use ventila o e exhaust o para remover fumo da zona respirat ria G Turn power off before servicing G Desconectar el cable de ali menta...

Page 25: ...and Service through Subsidiaries and Distributors Worldwide Cleveland Ohio 44117 1199 U S A TEL 216 481 8100 FAX 216 486 1751 WEB SITE www lincolnelectric com World s Leader in Welding and Cutting Pr...

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