6EM Thru 18GM - 1100 Vertical Turbine Pumps 39
CAUTION
Excessive tightening of the glands may
cause shaft sleeve damage.
Packing Replacement
For general service application with pump
temperature (0
°
C to 93
°
C), use a good
grade of soft, square, long fiber graphite
packing thoroughly lubricated.
For best results, use only genuine
Layne/Verti-Line replacement packing. The
replacement procedure should be as
follows:
A. Stop the pump.
DANGER
Lock out electrical power to prevent
accidental starting and causing
possible personal injury.
A. Unbolt and remove the gland.
B. Use a flexible packing tool* with a hook
attachment for removal of the packing.
*The packing tool can be purchased from
the factory or local supply house.
C. Clean the packing box and shaft sleeve.
D. Inspect the shaft sleeve for wear or
rough finish and replace the sleeve with
a genuine Layne/Verti-Line sleeve if
necessary.
E. Install the new packing.
IMPORTANT
Stagger the packing end joints 180
°
and
firmly seat each ring of packing as you
install it.
A. Refer to the technical data section for
pertinent stuffing box and packing
dimensions.
B. Reinstall the gland and tighten the gland
nuts finger tight. After the pump has
been started adjust the glands so that
there is a steady stream, approximately
1/8" diameter, from the packing box.
Pump Disassembly
WARNING
Read this entire disassembly procedure and
refer to the sectional drawings in this
manual before starting.
Major maintenance beyond lubrication,
adjustment of impeller or wear ring
clearance, and replacement or adjustment
of the packing will require disassembly of
the pump. The following are step-by-step
instructions and are essentially the reverse
of the installation procedure.
Driver Removal
Vertical Hollow Shaft (VHS) Driver
A. Stop the pump and lock out the power to
the driver. Close the discharge valve.
Disconnect the electrical cables from the
driver. Disconnect and remove gauges
and all other auxiliary piping. (Stuffing
box lubrication, oil, or grease lines, etc.)
DANGER
Check with proper electrical testing
equipment to be certain all electrical
power to the driver and accessories
associated with the pump is
disconnected.
B. Remove the driver cover, adjusting nut
lockscrew, and gib key. Lower the shaft
until the impeller rests on the bowl seat.
Remove the adjusting nut and driver
coupling.
C. Disconnect the shaft coupling under the
driver (if used) and remove the top shaft.
Remove the capscrews holding driver to
discharge head or pedestal.
D. Lift the driver from the head and set
aside.
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