GMC 12385527 Cylinder Kit,Clutch Master

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To overhaul the clutch master cylinder, you should:Drain the fluid from the reservoir (if it's on the cylinder) and remove the reservoir.Pull back the dust cover on the pushrod and remove the snap ring.Take out the retaining washer and the pushrod from the cylinder.Tap the master cylinder on a wooden block to eject the piston assembly.Separate the spring from the piston and remove the spring support, seal, and shim from the pushrod.Carefully take off the seal from the plunger.Inspect the cylinder bore for imperfections.

The initial steps for removing the clutch master cylinder include disconnecting the negative battery cable and, under the dashboard, removing the steering column covers and lower left air conditioning duct (if present). Additionally, disconnect the pushrod from the top of the clutch pedal, secured with a spring clip.