![]() Place support under the rod to avoid damage.Pull on the piston and position it to bottom out on the top gland(cap) ie:full extension.With the motion of the piston the residual oil will tend to spray out. with the cylinder firm in vise(but not too firm to "distort the integrity of the cylinder.) Place the cylinder Sideways so you can pull out piston and rod assembly.*** Put hose or suitable drain on holes of cylinder***.If you havent done so by now the oil should be drained. ![]() Once the retainer is started you can tap it with the wood and rubber mallet around the circumference of the cylinder to release the retainer from the groove.Lift up and rotate the ring more to allow the ring to pass over the edge of the opening.Use a small edged screw driver or pick and spin "retainer" in until the bent end comes to the opening.Using a block or dowel of wood(maybe rubber mallet also), depress the top cap of the cylinder to relieve tension on the ring.Place upright in vise or suitable bracing.This cylinder is not to hard to disassemble.SOURCE: i need to rebuild a hydraulic cylinder on a john
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June 2023
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