Important Meritor Automatic Slack Adjuster Information
Meritor Type 3 Unhanded Auto Slack
Meritor automatic slack adjusters (ASAs) should not need to be manually adjusted in service.
ASAs should not have to be adjusted to correct excessive push rod stroke. The excessive
stroke may be an indication that a problem exists with the foundation brake, ASA, brake actuator or other system components.
In the event that a manual adjustment must be made (although not a common practice),
a service appointment and full foundation brake, ASA, and other system component inspection
should be conducted as soon as possible to ensure integrity of the overall air brake system.
Never mix automatic slack adjusters on the same axle. Always use replacement parts that
were originally designed for the brake system to help ensure maximum brake performance.
How a Meritor Automatic Slack Adjuster Works
During installation of a Meritor stroke sensing automatic slack adjuster, you set
the brake chamber stroke measurement, which is the correct shoe-to-drum clearance. When
linings wear, this clearance increases, and the air brake chamber push rod must travel farther
to apply the brakes.
When this happens, the slack adjuster will automatically adjust during the return stroke
to maintain the correct shoe-to-drum clearance. If the air brake chamber push rod stroke
is within limits during operation, no adjustment occurs.
Handed and Unhanded Meritor Slack Adjusters
There are two Meritor automatic slack adjuster designs: handed and unhanded. Handing refers only
to the location of the pawl, which is used for clearance issues on the vehicle. For most applications,
install a handed automatic slack adjuster so that the pawl faces INBOARD on the vehicle.
Unless otherwise noted, the slack adjusters listed below are of the Type 3 Unhanded variety.
How do I measure my air brake slack adjuster?
The first step to determining which air brake
slack adjuster you need is to measure the diameter of the camshaft at the splines. You will then need to count
the splines. Finally, measure the distance from the center of the camshaft hole to the center of the clevis
pin hole. This measurement is referred to as the span in the list below.
You'll also need to be aware of any offset from the center line of the slack adjuster arm
to the center of the brake chamber push rod. Most of the slack adjusters listed below are
not offset. Offsets will be listed in the details for each slack.
A Word of Caution:
Do not mix slack adjuster brands on an axle. For example, don't have a Meritor automatic slack adjuster on one side and
a Gunite on the other. Why? Each brand has a different way of making the brake adjustment, so you will end up
with uneven braking.
Click on a slack adjuster below for full details.
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Meritor Automatic Slack Adjuster - Type 3, 1.25" 10 Spline, 5.5" Span (Type 16, Drum Brake)
Code: 650-R801001
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 1, 1.25" 24 Spline, 5.5" Span (Type 20, Drum Brake)
Code: 650-R802656
Quantity in Cart: none
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Price:
$113.40
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Meritor Automatic Slack Adjuster - Type 2, 1.25" 24 Spline, 5.5" Span (Type 20, Drum Brake)
Code: 650-R802657
Quantity in Cart: none
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Price:
$113.40
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Meritor Automatic Slack Adjuster - Type 3, 1.25" 24 Spline, 5.5" Span (Type 16, Type 20, Drum Brake)
Code: 650-R801003
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 3, 1.50" 10 Spline, 5.5" Span (Type 24, Type 30, Drum Brake)
Code: 650-R801041
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 3, 1.50" 10 Spline, 6" Span (Type 30, Drum Brake, Trailer)
Code: 650-R801042
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 1, 1.50" 10 Spline, 6.5" Span (Type 30, Drum Brake)
Code: 650-R801048
Quantity in Cart: none
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Price:
$113.40
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Meritor Automatic Slack Adjuster - Type 2, 1.50" 10 Spline, 6.5" Span (Type 30, Drum Brake)
Code: 650-R802361
Quantity in Cart: none
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Price:
$113.40
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Meritor Automatic Slack Adjuster - Type 1, 1.50" 28 Spline, 5.5" Span (Type 24, Type 30, Drum Brake)
Code: 650-R802446
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 2, 1.50" 28 Spline, 5.5" Span (Type 24, Type 30, Drum Brake)
Code: 650-R802447
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 1, 1.50" 28 Spline, 5.5" Span (Type 30, Disc Brake)
Code: 650-R802463
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 2, 1.50" 28 Spline, 5.5" Span (Type 30, Disc Brake)
Code: 650-R802462
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 3, 1.50" 28 Spline, 5.5" Span (Type 16, Disc or Drum Brake)
Code: 650-R801070
Quantity in Cart: none
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Price:
$92.72
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Meritor Automatic Slack Adjuster - Type 3, 1.50" 28 Spline, 5.5" Span (Type 20, Drum Brake)
Code: 650-R801079
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 3, 1.50" 28 Spline, 5.5" Span (Type 24, Type 30, Drum Brake)
Code: 650-R801073
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 1, 1.50" 28 Spline, 6" Span (Type 30, Disc Brake)
Code: 650-R802486
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 2, 1.50" 28 Spline, 6" Span (Type 30, Disc Brake)
Code: 650-R802487
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 3, 1.50" 28 Spline, 6" Span (Type 30, Drum Brake)
Code: 650-R801074
Quantity in Cart: none
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Price:
$89.31
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Meritor Automatic Slack Adjuster - Type 3, 1.625" 37 Spline, 6" Span (Type 30, Drum, Fruehauf)
Code: 650-R801102
Quantity in Cart: none
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Price:
$89.31
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Automatic Slack Adjuster Clevis Kit for Long Stroke Air Brake Chambers
Code: 650-R810021
Quantity in Cart: none
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Price:
$15.73
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