How to Install AccuLock S Liners
Using Power Pin Cap With Set Screw

Step 1

How to install AccuLock™ S Liner, Step1.A
A. Remove the nozzle
How to install AccuLock™ S Liner, Step1.B.
B. Loosen the gas diffuser
How to install AccuLock™ S Liner, Step1.C.
C. Remove the gas diffuser
How to install AccuLock™ S Liner, Step1.E
D. Loosen the set screw in the power pin cap and remove the cap from the rear of the gun.
How to install AccuLock™ S Liner, Step1.D
(Example of how to loosen the set screw in the power pin cap)

Step 2

How to install AccuLock™ S Liner, Step2.A
A. Remove the old liner
How to install AccuLock™ S Liner, Step1.A
B. Replace the new liner through the neck
How to install AccuLock™ S Liner, Step1.C(1)
C. With the gun laying straight, push the liner through until the brass liner lock bottoms on the neck
How to install AccuLock™ S Liner, Step2.C(2)
(Example of how the brass liner lock bottoms on the neck)

Step 3

How to install AccuLock™ S Liner, Step3.A(1)
A. To lock and center the liner, reinstall and tighten the gas diffuser
How to install AccuLock™ S Liner, Step3.A(2)
(Example of tightening the gas diffuser)
How to install AccuLock™ S Liner, Step3.B
B. Reinstall the nozzle
How to install AccuLock™ S Liner, Step3.C
C. Place the power pin cap over the liner and thread onto power pin
How to install AccuLock™ S Liner, Step 3.D
D. Tighten the cap snug against the power pin shoulder with welding pliers or appropriate wrench
How to install AccuLock™ S Liner, Step3.E
E. Holding the hex wrench as shown, tighten the set screw “finger tight” against the liner
How to install AccuLock™ S Liner, Step3.F
F. Next, hold the hex wrench by the handle and tighten the set screw an additional one-half turn to fully secure the liner

Step 4

How to install AccuLock™ S Liner, Step 4.A
A. Trim the liner flush with the power pin
How to install AccuLock™ S Liner, Step4.a(2)
(After step 4A, it should look like this)
How to install AccuLock™ S Liner, SteP 4.B.
B. Insert a piece of welding wire into the liner to check for burrs or obstructions. If needed, loosen screw slightly until wire slides freely

How to Install AccuLock S Liners Without Set Screw (Purchased before March 17, 2022)

Step 1

How To Install AccuLock™ S Liners, STEP 1A
A.  Remove nozzle
How To Install AccuLock™ S Liners, STEP 1B
B.  Loosen gas diffuser
How To Install AccuLock™ S Liners, STEP 1C
C.  Remove gas diffuser.
How To Install AccuLock™ S Liners, STEP 1D
D.  Remove power pin cap from the rear of the gun

 Step 2

How To Install AccuLock™ S Liners, STEP2A
A.  Remove old liner
How To Install AccuLock™ S Liners, STEP 2B
B.  Replace new liner through the neck
How To Install AccuLock™ S Liners, STEP 2, C1
C.  With the gun laying straight, push liner through until the brass liner lock bottoms on the neck
How To Install AccuLock™ S Liners, STEP 2 C2

Step 3

How To Install AccuLock™ S Liners, STEP 3A
A.  To lock and center the liner, reinstall gas diffuser
How To Install AccuLock™ S Liners, STEP 3B
B.  Reinstall nozzle
Comparison showing new vs. old Miller AccuLock S power pin
C.  Identify power pin to determine appropriate power pin cap torque specification. Power pin shown left: If your power pin has a large ID, please contact Customer Support to obtain the proper AccuLock S Power Pin Power pin shown right:
Torque to 10 ft-lbs / 120 in-lbs (13.5 Nm)
How To Install AccuLock™ S Liners, STEP 3D
D.  Place power pin cap over the liner
How To Install AccuLock™ S Liners, STEP 3E
E.  Place torque wrench on power pin cap and torque to value identified in 3C

 
Step 4

Trim AccuLock S Liner flush with back of power pin. How To Install AccuLock™ S Liners, step 4a
A.  Trim liner flush with the power pin
How to install AccuLock S Liner, STEP 4B

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