Brake Air Test

Brake Air Test

Figure 224 Install brake assembly retaining plates.

Figure 225 Tighten screws. NOTE: Leave 3.81 mm (.149”) clearance between retaining plates and brake to allow movement of brake. IMPORTANT: Do not hydraulic test. Figure 226 Remove bleeder and seat. Install air tester as shown. This checking device is comprised of minimum 690 kPa [30 psi] air gauge, air shut off valve and regulator. Apply 83 kPa (12 psi) for 20 seconds. Allow another 20 seconds for air stabilization period. Allow another 10 seconds for decay period. A maximum of 8 kPa decay allowed. If decay exceeds 8 Pa [.001 psi] repeat above steps. If decay exceeds 8 Pa [.001 psi] after 3 trials, disassemble and inspect for cause. Correct and retest. Repeat test on opposite side. Note: Alternate decay/periord is .69kPa [.1 PSI] per 5 minutes.

Figure 227 Install bleeder seat flat side down, Install bleeder and tighten to 9-14 Nm [7-10 LBF/FT].