TM 5-3810-300-24 & P2
Removal of the Cylinder is obvious. Therefore no removal procedures are given.
Disassemble in accordance with the index numbers.
To service the cylinder, first remove the snap ring from the head.
Push the head into the cylinder about one-half inch or far enough to permit removal of the snap ring from cylinder
By pulling the rod outward, the head, and piston and rod assembly can be removed as a unit. The head can now be
removed from the rod.
The rod seal and washers can be removed from the head by taking out the retaining ring.
Examine the piston and piston rings for damage. These parts should be replaced if they are worn or badly scored.
If the piston is removed from the rod, the copper washer seal should be replaced with a new one.
Inspect the inner wall of the cylinder body for scoring. Light scratches on the wall can be removed by buffing with
Examine the o-ring seal for cuts and abrasions on the outer surface that would cause leakage.
The rod seal assembly should be examined carefully for damage.
If the sealing edges of the neoprene ring are cut or worn, leakage will occur.
The nylon wedge ring and gland act as a rod scraper and if the edges are broken or "notched" foreign matter will
enter the seal cavity.
Wash and clean all parts thoroughly in solvent or kerosene before reassembly.
Check the rear pin and universal block for wear. The pin should fit snugly when assembled in the cylinder base and
Lubricate all seals and parts with light oil before assembly.
Install the rings on the piston having the joints positioned opposite each other.
A standard ring compressor will be required for assembling the piston and rod assembly in the body.
Install the washers and rod seal assembly in the head and secure it with the snap ring.
Install the o-ring seal on the head.
When assembling the head into the body, move it slowly so the o-ring will not be damaged as it passes the port hole in the
Install the snap ring in the body. Pull the rod outward to force the head against