Master Cylinder PUSHROD
NOTE:
Check and adjust master cylinder pushrod-to-piston clearance before installing master cylinder.
- Install and adjust pushrod Adjustment Gauge (07JAG-SD40100) on master cylinder body. Push in center shaft until top of it contacts end of secondary piston by turning adjusting nut. See Fig 1 . Ensure gasket is in position when adjusting rod clearance.
- Without disturbing center shaft's position, install the pushrod adjustment gauge backwards on booster. Install master cylinder nuts, and tighten to specifications. See TORQUE SPECIFICATIONS . Connect booster in-line with a 0-30 in. Hg vacuum gauge to booster's engine vacuum supply, and maintain an engine speed that will deliver 20 in. Hg of vacuum.
- With a feeler gauge, measure clearance between gauge body and adjusting nut. See Fig 2
. If clearance between gauge body and adjusting nut is 0.02" (0.44 mm) the pushrod-to-piston clearance is 0 mm. However, if the clearance between gauge body and adjusting nut is 0 mm, the pushrod-to-piston clearance is 0.02" (0.4 mm) or more. Therefore it must be adjusted and rechecked.
- Pushrod Clearance Standard - 0-0.02" (0-0.4 mm)
- If clearance is incorrect, loosen star lock nut and turn adjuster in or out to adjust. Adjust clearance while the specified vacuum is applied to booster. Hold clevis while adjusting. See Fig 3 . Tighten star lock nut securely. Remove pushrod adjustment gauge. Check pushrod length. If length is incorrect, loosen pushrod lock nut, and turn clevis in or out to adjust.