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TROUBLESHOOTING AND REPAIR |
TACH (HALL EFFECT) ASSEMBLY REMOVAL AND REPLACEMENT (continued)
FIGURE F.19 — TACH REMOVAL AND REPLACEMENT.
LOCK
NUT
HALL
EFFECT
DEVICE
TACH
ASSEMBLY
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REMOVAL PROCEDURE
1.Remove input power to the wire feeder.
2.Using the 3/8 in. nutdriver, remove the case cover.
3.Locate the tach assembly on the top of the gear box. Refer to Figure F.19.
4.Locate and remove plug J4 from the control board.
5.Thread plug J4 and associated leads through the vertical baffle. Cut any necessary cable ties.
6.Using the 9/16 in. wrench, loosen the locking nut on the Hall Effect device.
7.Carefully unscrew the Hall Effect device from the gear box assembly.
REPLACEMENT PROCEDURE
1.Carefully screw the Hall Effect device into the gear box assembly until it gen- tly “bottoms out” on the rotary magnet inside.
2.Unscrew the Hall Effect device 1/2 turn from the rotary magnet. Tighten the locking nut to 8 in/lbs.
3.Thread the J4 leads through the vertical baffle and install cable ties where appropriate.
4.Connect plug J4 into the control board.
5.Install the wire feeder cover using the 3/8 in. nutdriver.
