The Miller Arc Welding Power Source and Wire Feeder Millermatic 135 is a reliable and efficient welding solution designed for both professional and hobbyist applications. Known for its versatility and ease of use, this model delivers consistent performance in various welding tasks, making it a preferred choice among welders.
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Find all the essential guides in one place.
Tensioning Guide
Belt-diagram
C-120 pulleys
+ 13 more
Pre-built workflows to keep your asset running smoothly.
Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
+ 29 more
Integrate maintenance plans directly into your work orders.
Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Access the parts list for your equipment in MaintainX.
Drive Motor
B2 Rollers
Tensioning System
+ 40 more

Miller Miller Arc Welding Power Source And Wire Feeder Millermatic 135 Millermatic 135
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Integrate maintenance plans directly into your work orders in MaintainX.
Switch And/Or Head Tube Replacement
Turn Off welding power source/wire feeder and disconnect gun.
Remove handle locking nut.
Remove switch housing. Install new switch and connect leads (polarity is not important).
Reassemble in reverse order. If replacing head tube, continue to end of figure.
Slide handle.
Secure head tube in vice.
Loosen jam nut. Remove from vice and turn head tube out by hand.
Hand-tighten head tube into cable connector.
Place head tube in vice and tighten until nuts are tight.
Gun Liner Maintenance
Disassembly Steps
Gun disconnected from unit
Nozzle removed
Contact tip removed
Adapter removed
Gas diffuser removed
Wire outlet guide removed
Gun cable laid out straight
Gun casing blown out
Gun Contact Tip Replacement
Turn Off power before replacing contact tip.
Power turned off?
Cut off welding wire at contact tip.
Welding wire cut off at contact tip?
Remove nozzle.
Nozzle removed?
Remove contact tip and install new contact tip.
New contact tip installed?
Reinstall nozzle.
3 Monthly Arc Welding Power Source Maintenance
Check if labels are readable
Upload a photo of the unreadable labels
Check for cracked weld cable
Upload a photo of the cracked weld cable
Check weld terminals for cleanliness and tightness
Upload a photo of the weld terminals
Every 6 months or monthly during heavy service, clean the inside
Check if the inside is clean
Upload a photo of the inside
Drive Roll Or Wire Inlet Guide Replacement
Inlet Wire Guide Replacement
Remove guide by pressing on barbed area or cutting off one end near housing and pulling it out of hole
Push new guide into hole from rear until it snaps in place
Drive Roll Replacement
Identify the proper groove to thread on the drive roll
Retaining Pin Replacement
Locate open slot and push drive roll completely over retaining pin
Rotate drive roll 1/4 turn to closed slot
Sign off on the replacement procedure
Access the parts list for your equipment in MaintainX.
Label
203 499
Switch
196 575
Work Cable.
196 619
Baffle
202 582
Base
202 581
Label
203 499
Switch
196 575
Work Cable.
196 619
Baffle
202 582
Base
202 581
Label
203 499
Switch
196 575
Work Cable.
196 619
Baffle
202 582
Base
202 581
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Ensure your team follows consistent procedures to minimize equipment failures and costly delays.
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