Pierce Enforcer - Procedure

© 2020 Pierce Manufacturing Inc. All Rights Reserved. Axles, Tires, and Brakes / 3-3
BEFORE PLACING VEHICLE IN SERVICE
The proper chart must be referenced based upon the brake type on each axle:
Brake chamber size is stamped on the components themselves. Slack adjuster length can be determined directly
by measuring between the camshaft center and the large clevis pin. Any modification to the brakes to balance the
system by reducing brake power must be accompanied by a revision to the Federal Motor Vehicle Safety Standard
(FMVSS) information decal (contact Pierce Customer Service for revised tags).
Figure 3-1: Brake Power Chart (Cam Brakes on Front and Rear Axles)
POM0039
Table 3-1: Brake Power Chart Reference Table
Front Axle Rear Axle
Figure 3-1 Cam Brakes Cam Brakes
Figure 3-2 Disc Brakes Cam Brakes
Figure 3-3 Disc Brakes Disc Brakes
In-Service Axle
Weights (Lb.)
11,000-14,600 14,601-16,540 16,541-18,000 18,001-21,500
Axle Model
FG941 RF16-145, FL941/FL943
14,000-17,000 RS21
Front:24 x 5-1/2
Rear:24 x 5-1/2
Front:24 x 5-1/2
Rear:24 x 5-1/2
17,001-21,000 RS21
Front:24 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
21,001-24,000 RS23
Front:24 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 6
24,001-27,000 RS25
Front:30 x 5-1/2
Rear:30 x 6
Front:30 x 5-1/2
Rear:30 x 6
Front:30 x 5-1/2
Rear:30 x 6
Front:30 x 5-1/2
Rear:30 x 6
27,001-31,000 RS30
Front:30 x 5-1/2
Rear:36 x 6
Front:30 x 5-1/2
Rear:36 x 6
Front:30 x 5- 1/2
Rear:36 x 6
Front:30 x 5-1/2
Rear:36 x 6
34,000-42,000
RT34
RT40
Front:24 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
42,001-48,000
RT44
RT46
Front:24 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 5-1/2
Front:30 x 5-1/2
Rear:30 x 6
48,001-54,000 RT52
Front:30 x 5-1/2
Rear:30 x 6
Front:30 x 5-1/2
Rear:30 x 6
Front:30 x 5-1/2
Rear:30 x 6
Front:30 x 5-1/2
Rear:30 x 6
54,001-58,000 RT58
Front:30 x 5-1/2
Rear:36 x 6
Front:30 x 5-1/2
Rear:36 x 6
Front:30 x 5-1/2
Rear:36 x 6
FRONT
RAER