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Related Products: |
EZBA-001 |
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Related Documents: |
EZDP-2016, CED-1008 |
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Type: |
Installation, Operation, Maintenance |
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Keywords/Labels: |
Brush Holder, Brush Spring, Brush Shunt |
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Summary: |
Describes the procedures involved with installing brushes into the brush holders for a new installation or for replacement |
These two videos demonstrate how to remove and replace a brush and how to position the brush leads. For detailed text and illustration, refer to the procedures in the sections that follow these videos.
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While maintaining control of the brush holder (A), lift the handle (B) and rotate it to the retracted position (C).
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Pull the brush holder (A) completely off of the holder mount (D) and ensure the terminal connection area (E) on the mount is not excessively worn or pitted.
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Pull the brush terminal (A) free from the terminal mount.
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Orient the brush key (B) to the correct position in reference to the brush holder.
Do NOT insert the brush key in this orientation:
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Slide the brush key (B) into the lower beam (C) of the brush holder.
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Press down onto a flat surface until the brush key (B) snaps into the brush holder.
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When the brush key is fully engaged into the brush holder, the old brush (D) easily slides out when you pull away the brush holder.
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Press in on the release tab (A) of the brush key (B) and pull it out of the brush holder. The brush spring release fingers grab the brush spring as the brush key is pulled out of the brush holder.
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Remove the old brush spring (C) and discard.
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Insert a brush spring (A) onto the spring rib (B).
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Push until the spring hole (C) snaps onto the spring pin (D).
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Rotate the brush (A) so the terminal ears (B) point down.
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Insert the brush (A) into the holder (C) until the terminal ears (B) pass the brush spring.
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Rotate the brush (A) so the terminal ears (B) point up and start to insert the brush into the holder.
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Insert the brush (A) the rest of the way into the holder until approximately 1/8 in (3.2 mm) extends out of the brush box.
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Insert the brush terminal (D) onto the terminal mount rib (E).
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To prevent brush binding, lead damage, and interference with the handle (A), position the brush leads (B) as shown:
Review these correct/incorrect examples for additional clarification:
Correct
Incorrect
In this correct example the brush shunts are formed straight up so that they will not catch on the box.
Do not position the brush leads as this example shows. In this position the leads will restrict free movement of the brush (hang up).
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Align the brush holder (A) with the grooves on the side of the holder mount (B) and slide into the holder mount.
These example images provide additional clarification:
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Rotate and lock the handle (C) into place while applying light pressure toward the collector ring (D).
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Repeat the procedures in this article for the remaining springs, brushes, and brush holders.