FIELD SERVICE
BULLETIN
Date: |
April 7, 2004 |
Distribution Copy: |
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File Group: |
03 |
Section: Rear Suspension |
Dealer Principal |
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Warranty Manager |
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ATTENTION: |
Service Manager |
Parts Manager |
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Sales Manager |
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Peterbilt Air Suspension Ride Heights
This bulletin is applicable to all vehicles equipped with proprietary rear air suspensions.
The table below provides ride heights for ready reference. Ride height is defined as the vertical distance from the center of the drive axle hub to the underside of the frame rail (see Figure 1 below). It is measured forward of the axle, but not forward of the suspension bracket, on single-axle suspensions, and at the centerline of tandem-axle suspensions (as shown in Figure 1). Ride height is adjustable using the ride height gauge shown in F.S.B. #3-00R or F.S.B. #6-01R.
Proprietary Rear Air Suspension |
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Ride Height [inches (mm)] |
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Single Drive |
Tandem Drive |
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Air Leaf |
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N/A |
11.70 (297) |
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Air Trac |
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11.00 (279) |
11.00 (279) |
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Low Air Leaf (before 4/5/04) |
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8.50 (216) |
8.50 (216) |
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Low Air Leaf (on and after 4/5/04) |
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6.50 (165) |
8.50 (216) |
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Low Low Air Leaf |
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N/A |
6.50 (165) |
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FLEX Air |
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N/A |
8.50 (216) |
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Figure 1 Illustration of Measuring Ride Height on a Tandem Suspension
This bulletin supersedes F.S.B. #14-96R dated March 30, 2001.
Indicates revision
PS803031 |
F.S.B. # 14-96R |
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