VII. To Replace Piston Rod Gland Packing.
(Packing, 4 rings, 5-16-inch square Garlock hydraulic packing.)
(Gun in battery or cylinder removed.)
1. Remove lower split pin from gland lock, swing gland lock up out of notch in gland.
2. Unscrew gland with special wrench and slide forward on rod.
3. Remove packing with bent wire.
4. Insert five rings of new packing, one ring at a time, and push each ring home with packing tool of copper or hardwood to fit into gland recess. Break joints in rings and tap packing tool lightly with hammer to drive each ring of packing home.
5. Screw up gland by hand and not more than three additional notches with wrench so that gland lock will catch and replace split pin.
Note.—For the first few rounds after inserting new packing there will be some leakage at gland and occasional tightening will be necessary. Gland should not be screwed up tight with a wrench, as it can be made sufficiently tight by hand to prevent leakage if properly packed.