Issue/Rev. 0.6 (12/18) ║ MN01005 • Page 9
2-Bladed Double Case PD Meters Service Manual
Disassembly
2.4.
High Pressure Packing Gland Maintenance
(Models C2 Through JA10-S1, S3, S5, S7, and A3)
Glycerine solution is used as a sealant and lubricant in this type of packing gland. The gland
should be serviced on an interval determined by experience, however, the period between
injections should not exceed 60 days. See Figure 8.
Ambient Temperature
Lubricant
-4°F to 300°F (-20°C to 150°C)
Glycerine solution
If the meter has been idle for a period of time, prior to startup, inject the packing gland with 1 oz
of Glycerine solution.
The lubricant injection volume of the packing gland is recommended to be 1 fluid oz. injected
through the lubrication (Zerck) fitting. The packing gland design and reservoir overflow into the
meter which ensures that the packing gland cannot be overfilled.
Note:
Lubricating grease should never be used in the packing gland.
Reference Literature:
Lubricants and Sealants Parts List
Tools Parts List
2.5.
High Pressure Packing Gland Service
(Models C2 Through JA10-S1, S3, S5, S7, and A3)
WARNING:
Prior to any service or disassembly of the packing gland, it is strongly recommended
to depressurize and drain the meter, maintaining zero pressure on the packing gland.
1. To remove the gland assembly, Figure 9:
Remove the lubrication fitting and tube.
Remove the two socket head cap screws.
Lift out the gland assembly and seal ring.
2. The gland may be disassembled and
parts replaced as necessary. Refer to
general meter parts list for assembly
number and specific parts list for
individual parts. See Table 12 on page 28
for torque values.
3. If the shaft is worn or corroded, it should
be replaced. If reusable, clean and polish
the shaft with fine crocus cloth.
When reinstalling, lightly coat the shaft
with grease.
4. Inspect the thrust bearing plates for wear.
If worn, replace. Be sure flat side of races
are next to bearings.
Figure 8 –
Packing Gland on Cover
Figure 9 –
Gland Removed
Table 2