12. From the air motor section, remove the cotter pin then remove the flat head pin.
Unscrew the displacement rod from the piston shaft, as shown in diagram above.
13. From the air section, remove the packing nut from the outlet housing and remove
female gland, male gland and “V” block packing from the outlet housing. Examine all
packing’s for damage and replace if necessary. Examine the displacement rod for
damage along its length and on both ends. Replace if necessary. Lubricate then re-
assemble the packing parts (female gland, male gland and “V” block packing) onto the
outlet housing. Tighten up the packing nut taking care not to over-tighten it to ensure
no damage occurs to the packings.
14.
Clamp the air motor assembly in a vice by the air
motor base. Using a strap wrench near the base as
shown, remove the air cylinder. Examine the conical
spring in the air motor cap to ensure that it is not
damaged or loose. Slide the air motor assembly with
the piston shaft out through the air motor base.
Examine the V-block packing for damage and replace
if necessary. Examine the square cut gaskets in the air
motor cap, top and bottom and replace if needed. This
gasket seals the cylinder cap to the air cylinder cap to
the air cylinder. Look at air section illustration for a
complete parts reference numbers.
15. From fluid section, unscrew displacement rod from the piston shaft. Examine for debris
build-up or damage. Re-assemble the muffler with the point of the cone facing up
inside the piston shaft. Screw the displacement rod into the piston shaft.
16. From air section, remove the air motor assembly from the piston shaft. Remove the
three socket head cap screws. Examine the three small O-rings and one large O-ring
and replace if necessary.
