Torch Switch; Handle And Cable Assembly; Replacement Parts - ESAB MT-400EHD Instructions For Use Manual

Mig welding gun with bayonet connector
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NOTE: When assembling a new curved wire guide,
do NOT apply teflon tape or other lubricants
on the pipe threads. The threads should be
dry since the torch body threads have a film of
conductive material already applied. Assemble
the torch body to the wire guide by hand, and
then use a wrench to tighten to the desired
position.
4.7

TORCH SWITCH

IMPORTANT:
During the first switch replacement.
The housing should be removed and
the switch lead positions observed.
When the switch and other switch
parts are reassembled, the leads
should be returned to the original po-
sition.
To replace switch (2075220), press lever (2075214)
down and then remove metal clamp (2075219) from
switch housing (998858) by sliding it towards the rear
of the torch handle. After lifting the lever away from
the handle, remove the switch from the mounting lugs
on the underside of the lever. You can then disconnect
the leads from the old switch and reconnect to the
new switch. Make sure the switch is properly posi-
tioned on the mounting lugs of the lever and then reas-
semble lever and clamp. The switch is properly as-
sembled when you press and release the lever and
hear two distinct clicks.
If you desire to have the switch assembly located on
the top side of the torch handle for thumb operation of
MOLDED
RUBBER KEYS
16
switch, disassemble as described above but you must
also remove the plastic housing from the handle and
cut off the molded-in rubber keys (located on the un-
derside where illustrated) with a wire cutter or some
other sharp instrument. Spread the housing apart so
that it can slide upward off the handle. Disconnect the
switch and then reconnect on the top side of handle so
that the leads can be tucked neatly into the handle cav-
ity. Reassemble the housing from the opposite side.
Reassemble switch components as described in the
preceding paragraph.
4.8 HANDLE AND CABLE ASSEMBLY (See Figure
5.1)
The handle and cable assembly includes the power
cable switch leads, and gas and wire passages. The
outer jacket should be examined periodically for signs
of minor damage which may be repaired by the cus-
tomer. If severe damage occurs, causing torch mal-
functions, the handle and cable assembly should be
replaced.
V. REPLACEMENT PARTS
5.1 GENERAL
All replacement parts are keyed in figure 5.1. Other
replacement parts by part number and part name. Do
not order by part number alone.
The following illustrations of the equipment identify each
replacement part by part number, description and quan-
tity used (in parentheses, if more than one).
Some assemblies are available as a unit or as indi-
vidual parts. These parts are listed below such as-
semblies. When any of the assembly parts is a subas-
sembly, its individual parts are listed below it, indented
another space.
Attaching hardware items are listed below the part they
attach. They may not be shown. Order them sepa-
rately.
5.2 ORDERING
To assure proper operation, it is recommended that
only genuine ESAB parts be used with this equipment.
To order replacement parts:
a. Give the part number, description and quantity of
each part required.
b. Give part number and description of equipment on
which the parts are to be used.
c. Indicate any special shipping instructions.

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