8. Install packing installation cone part number 4005
over the threaded end of the piston rod.
9. Carefully slip the packing cartridge over the piston rod;
otherwise, you may damage the lips of the packing rings.
10. Remove packing installation cone.
11. Install and tighten cartridge holddown screw with
special compressor wrench.
12. Install cylinder O-ring, cylinder, pistons, and head.
Model 691 Compressor
(Refer to Appendix E for packing assembly details)
Disassembly of Packing
1. Depressurize and open the compressor.
2. Remove head, pistons and cylinder.
3. Remove cartridge holddown screw with special
wrench supplied with the compressor and packing
box cartridge.
4. Loosen adjusting screw and remove retainer ring,
washers, packing spring and old packing from
packing box cartridge.
Assembly of Packing
1. Clean then lightly oil packing area inside packing box
cartridge.
2. Thread in adjusting screw until locking device (part
number 1192) is engaged into first thread of the
packing cartridge.
3. Install packing rings, including male and female
packing rings, one at a time, as shown in Appendix
E. Push in each one completely before adding the
next ring.
4. Insert a packing washer, packing spring, and another
packing washer.
5. Push down on washer and insert retainer ring.
6. Oil piston rod and replace cartridge O-ring.
7. Install packing installation cone (part number 3905)
over the threaded end of the piston rod.
8. Carefully slip the packing cartridge over the piston
rod; otherwise, you may damage the lips of the
packing rings.
9. Install and tighten cartridge holddown screw with
special compressor wrench.
10. Replace cylinder O-ring, cylinder, pistons and head.
Model 891 Compressor
(Refer to Appendix E for packing assembly details)
Disassembly of Packing (D-Style)
1. Depressurize and open the compressor.
2. Remove the cylinder cap, heads, pistons and cylinder.
3. Remove the packing barrels by prying upwardly under
each one and lifting entire packing barrel/cartridge
assembly up from piston rod.
4. Remove the four socket head screws that hold the
packing box cartridge to the barrel.
5. Remove segmented packing and cups from barrel.
6. Remove lower retainer ring, washers, packing spring
and old V-ring packing from packing box cartridge.
Assembly of Packing (D-Style)
1. Replace packing as required. The segmented packing
and cups are located in the packing barrel while the
V-ring packing is located in the packing box cartridge.
NOTE: Always use new O-rings when replacing
the packing.
2. V-ring packing set:
NOTE: The instructions below are for packing
specification “J”. Depending on the packing
specification used in your compressor, the
order of assembly for the packing rings, V-ring
packing, washers and packing spring will vary.
Refer to Appendix E to view the V-ring packing
arrangements and follow the order of assembly
and V-ring direction. If you do not know the
packing arrangement used in your compressor,
refer to the model number identification codes
listed in Appendix A.
a. Clean and lightly oil the packing area inside the
packing box cartridge.
b. Insert the oil deflector ring through the bottom
opening of the packing box cartridge.
c. Insert the first retainer ring followed by a washer.
d. Insert the packing spring followed by another washer.
e. Insert a male packing ring followed by four V-rings
and one female packing ring. NOTE: Insert packing
rings and V-rings one at a time. Refer to Appendix
E for the proper direction of the male and female
packing rings and V-rings.
f. Lastly, insert the final washer. Push in on the
washer and install the second retainer ring.
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