Hale Q Series Muscle - Manual (Page 88)

 Preventive Maintenance
86 MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual
p/n: 029-0020-63-0
Figure 5-2: Pump Packing Seal Assembly
6. Repack using the Hale packing kit recommended for your particular pump. For
most pumps, the packing is 7/16” (11 mm) square cut to the proper length.
7. Wrap one length of packing around the shaft to form a ring, and push the ring into
the housing. Install the second ring the same way, but stagger the joint one-third
of the way around from the first joint.
8. Insert a foil separator between each packing ring. The foil separator must be cut
to fit.
9. Install the other rings, again staggering the joints.
10. Replace the gland and adjust accordingly. Also see heading “Packing Gland
Adjustment” on page 77.
11. Operate the pump normally for about 15 minutes at 130 PSI (896 kPa), and check
the packing gland. If necessary, adjust the packing nut again - see heading
“Packing Gland Adjustment” on page 77.
Worn Clearance Rings and Impeller Hubs
Before assuming that clearance ring wear is at fault, it is advisable to thoroughly
check other possible causes of low performance.
Clearance rings limit the internal bypass of water from the discharge side of the pump
back to suction. The radial clearance between the impeller hub and the clearance