b. Install the oil wiper ring set, packing washer and
inner retainer ring into the crankcase side of the
packing cartridge body.
c. Install the O-ring on the packing spacer, and
install both into the cylinder side of the packing
cartridge body.
d. Install a back-up ring, segmented packing set
(tangent-tangent [TT]) and packing cup with
O-ring into the cylinder side of the packing
cartridge body.
e. Install a back-up ring, a segmented packing set
(radial-tangent [RT]) and packing cup with O-ring
into the cylinder side of the packing cartridge
body. Repeat this process for the remaining RT
packing sets.
f. Install the pressure breaker ring (not included
on 6" and 8" cylinders) and final packing cup
with O-ring into the cylinder side of the packing
cartridge body. Reinstall outer retainer ring.
g. Install a packing installation cone (Part no. 3905)
on threaded end of the piston rod
h. Install a new O-ring inside the adapter.
i. Carefully install the assembled packing cartridge
assembly on the piston rod and insert into the
adapter. Be sure the mark previously made on the
packing cartridge body is oriented up because the
packing cartridge body can only be installed in
one position. Attach the packing cartridge body to
the adapter with the four socket head bolts.
j. Remove the packing installation cone.
k. Replace the cylinder, pistons and cylinder head
(along with adjustable head components, if any).
l. Rotate the unit by hand to insure proper assembly.
4.
Purge Packing Specification
a. Refer to Appendix D and note the order in which the
parts are to be installed and their correct orientation.
b. Install oil wiper ring set and oil wiper ring cup into
the cylinder side of the packing cartridge body.
c. Install a biased packing set (tangent-tangent with
springs toward cylinder [TTs]), purge packing cup
with O-ring and cup spacer into the cylinder side
of the packing cartridge body.
NOTE: The six
springs in the biased packing sets are very
small and fit loosely, so extra care is needed to
keep from losing them or having them become
dislodged during assembly .
d. Install a purge packing cup with O-ring and biased
packing set (tangent-tangent with springs toward
crankcase [sTT]) into cylinder side of packing
cartridge body.
e. Install the O-ring on the packing spacer, and
install both into the cylinder side of the packing
cartridge body.
f. Install the back-up ring, segmented packing set
(tangent-tangent [TT]) and packing cup with
the O-ring into the cylinder side of the packing
cartridge body.
g.
2-3/4", 3-1/4" and 4" Cylinders:
Each of these
cylinder sizes includes a pressure breaker ring
on the outer end of the packing cartridge
assembly. Also, these cylinder sizes include a
packing cartridge cap into which at least some
of the segmented packing sets (radial-tangent
[RT]) are positioned.
i. Install a back-up ring, segmented packing
set (radial-tangent [RT]) and packing cup with
O-ring into cylinder side of packing cartridge
body. Repeat this process as necessary for
additional RT packing sets until a packing cup
extends partially from the cylinder side of the
packing cartridge body.
ii. Install the pressure breaker ring and packing
cup with O-ring into the packing cartridge cap.
iii. Install a back-up ring, segmented packing
set (radial-tangent [RT]) and packing cup with
O-ring into the packing cartridge cap. Repeat
this process for remaining RT packing sets.
iv. Install the packing cartridge cap on the packing
cartridge body, making sure the previously
made markings on each are aligned. The
portion of the packing cup extending from the
packing cartridge body should extend into the
packing cartridge cap.
v. Insure that the pin extending from the outer
end of packing box cartridge fits into the
corresponding hole in the packing cartridge
cap.
NOTE: Some early models did not have
this pin .
h.
5", 6" and 8" Cylinders:
Each of these cylinder sizes
includes a flat packing cartridge cap that fits on the
outer end of the packing cartridge body.
i. Install a back-up ring, segmented packing
set (radial-tangent [RT]) and packing cup with
O-ring into the cylinder side of the packing
cartridge body. Repeat this process for
remaining RT packing sets.
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