ASA |
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Automatic Slack Adjuster |
Adjustment |
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Method whereby the Automatic Slack Adjuster maintains the correct Pre-Set Clearance |
Alpha Angle |
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The installation angle of the Control Arm on the Slack Adjuster |
Anchor Bracket |
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Used with Quick-Fit Control Arms |
Anchor Pin |
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Used with Control Arms which bolt to the Anchor Point |
Anchor Point |
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The bracket which connects the Control Arm of the Slack Adjuster to the vehicle |
Camshaft |
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Connects the Slack Adjuster worm wheel to the brake shoes |
Clevis Bush |
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The bush in the Housing where the actuator mates with the Slack Adjuster |
Control Arm |
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The rotating arm connecting the Cover Plate to the Anchor Point |
Control Unit |
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Combination of Cover Plate, Control Arm, Alpha Angle (ASA only) and Pre-Set Clearance |
Cover Plate |
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Metal pressing which is screwed on to the Housing to protect the Mechanism |
Fitting Kit |
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Loose parts supplied with the Slack Adjuster |
Grease Nipple |
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All MEI Slack Adjusters are fitted with Grease Nipple to lubricate the Mechanism |
Grommet |
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Plastic insert housed in Peg Bolt type Control Arms |
Hex Nut |
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The 12mm nut which rotates as the Mechanism adjusts, being part of the Worm Shaft |
Housing |
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Cast section which contains the Mechanism and extends to hold the Clevis Bush |
Inclination |
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With Cover Plate facing and Hex Nut on your left, this is the angle of the Housing, taken from the vertical |
MSA |
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Manual Slack Adjuster |
Mechanism |
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The internal components of the Slack Adjuster which maintain the Pre-Set Clearance of the brake system |
OEM |
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Original Equipment Manufacturer |
Offset |
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With Hex Nut facing, this is the distance from centre of the Hex Nut to centre of the Housing where the Clevis Bush sits, taken from the vertical |
Peg Bolt |
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Used with Control Arms incorporating a Grommet in the Anchor Point |
Pre-Set Clearance |
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The distance between brake lining and brake drum specified by the vehicle manufacturer |
Quick-Fit |
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Common Anchor Point type on trailers where the Control Arm sits in the slot of the Anchor Bracket |
S-ASA |
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Self-setting Automatic Slack Adjuster |
Spline |
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The mating teeth of the Camshaft and Slack Adjuster |
Wear Indicator |
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Pointer which is fixed to and rotates with the Camshaft, showing brake lining wear |
Worm Shaft |
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Part of the Mechanism which mates with the Worm Wheel and includes the Hex Nut |
Worm Wheel |
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Part of the Mechanism which mates with the Worm Shaft and Camshaft |