CV21 New Lined Shoes.

2 — CV21 New Lined Shoes

Dayton Parts, LLC

Initial DrumTemperature Maximum, Average, Minimum Pressure STOP NUMBER 20 1 2 3 4 5 6 7 8 9 10 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 0.0 STOKE (inches) 0.4 0.8 1.2 1.6 2.0 2.4 120 2 50-15 mi/h - 9 ft/s Deceleration - 72 s Time Cycle 2 20 mi/h - 14 ft/s Decel. 2 30 mi/h - 12 ft/s Deceleration - 60 s Time Cycle BRAKE POWER HOT STOP RECOVERY 0.0 STROKE (inches) 0.4 0.8 1.2 1.6 2.0 2.4 0 20 40 60 80 SUSTAINED PRESSURE (PSI) 100 0.0 RETARDATION RATIO 0.2 0.4 0.6 0.8 1.0 1.2 0.0 STROKE (inches) 0.4 0.8 1.2 1.6 2.0 2.4 1 20 40 60 80 STOP NUMBER 100 120 140 160 180 200 1 20 40 60 80 STOP NUMBER 100 120 140 160 180 200 0 2 40 mi/h - 10 ft/s Deceleration Rate 50 mi/h - 176°F Initial Lining Temperature Maximum Stroke Minimum Limit Maximum Limit Retardation Ratio 0 20 40 60 80 100 350°F BURNISH 2 40 mi/h - 10 ft/s Deceleration Rate 500°F BURNISH RETARDATION

2 FMVSS 121 Test Results CV21 - Vocations Up To 20K 20,000 lb GAWR, 19.6" RR Type 30 Chamber, 5.5" Slack Arm, 80 100 120

60

40

PRESSURE (lbf/in ) 20

PRESSURE (lbf/in ) INIT LINING/10°F

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