6. The stem may be attached to the diaphragm head in a number of different ways.
Follow one of the below procedures and refer to the indicated illustration that applies
to the operator being repaired.
• (Figure 4) Loosen the hex socket set screw (Item #21) from the top of the diaphragm
head and unscrew the stem.
• (Figure 5) Remove the hex nut from the top of the diaphragm head and unscrew the
stem.
7. Remove the diaphragm, o-ring retainer, and packing gland, packing and packing
washers from the stem. Replace the packing if necessary.
8. Place the o-rings in the packing gland or the o-ring retainer if the operator has one.
The o-rings may be installed in a number of different ways. Follow one of the below
procedures and refer to the indicated illustration that applies to the operator being repaired.
5
NOTE: If the stem does not have a larger tip, the packing and packing
washers will remain in the body. Remove the packing and
washers from the body and reinstall new packing.
• (Figure 6) Place the o-rings in the o-ring retainer (P-0885, Unif. 112 and P-6002,
Unif. 108) and make sure the o-ring retainer is placed around the stem on top of the
packing gland before replacing in the lower housing. Reinstall retaining ring to secure
o-ring retainer.
• (Figure 7) Remove the sleeve from the packing gland bore. Replace the o-ring
(P-0847 Unif. 107) in the bore. Replace the o-ring in the groove (P-0885, Unif. 112)
on the outside of the packing gland and replace the sleeve.
• (Figure 8) Remove the retaining ring and sleeve from the packing gland bore.
Replace the o-ring (P-0847, Unif. 007) in the bore. Replace the o-ring in the groove
(P-0885, Unif. 112) on the outside of the packing gland and replace the sleeve and
retaining ring.
• (Figure 9) Loosen the hex jam nut on the packing gland. Remove the insert from the
packing gland. Replace the o-ring (P-0867, Unif. 110 or P-0848 Unif. 009) around the
stem on top of the packing gland. Replace the insert and tighten the hex jam nut. It is
necessary to have the stem pushed up through the packing gland at this time to be
sure that the o-ring seals around it.
For stems that have a larger stem tip, install the bottom washer, new packing and the
packing washer on the stem.
9. Screw the packing gland into the lower housing and tighten the set screw or lock nut.
If necessary, place the o-ring retainer above the packing gland, as shown in Figure 1.
