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Master Cylinder Push Rod Clearance

NOTE: Master cylinder push rod-to-piston clearance must be checked and adjusted before installing master cylinder.
  1. Mount Push Rod Adjustment Gauge (07JAG-SD40100) on master cylinder. Rotate adjuster nut until top of center shaft contacts end of secondary piston without changing piston position. See Fig 1.
  2. Remove push rod adjustment gauge from master cylinder, and install on brake booster. Tighten master cylinder nuts to specification. See TORQUE SPECIFICATIONS . Using engine or outside vacuum source, apply a continuous 20 in. Hg vacuum to brake booster.
  3. Using a feeler gauge, ensure clearance between gauge body and adjusting nut is .008" (0.2 mm). See Fig 2.
  4. Remove adjustment gauge. Hold push rod, and rotate adjuster in or out for specified clearance. DO NOT pull push rod out of brake booster. Tighten star lock nut securely.
Fig 1: Setting Push Rod Adjustment Gauge
G96A20990Courtesy of AMERICAN HONDA MOTOR CO., INC.
Fig 2: Measuring Push Rod Clearance
G96B20991Courtesy of AMERICAN HONDA MOTOR CO., INC.
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