Publicité
Les langues disponibles
Les langues disponibles
11. Apply LOCTITE
#271 or equivalent, to new impeller
®
bolt threads and tighten to:
"-16 bolts 20 lbs.-ft. (27 N . m)
⁄
3
8
½"-13 bolts 38 lbs.-ft. (51 N . m)
Impeller bolt not used for SAE units.
12. For SAE units apply LOCTITE
threads of the shaft and internal threads of the
impeller nut (22). Tighten impeller nut to the following:
½"-Impeller Nut (SAE M-Group) 80 lbs.-ft. (107 N . m)
¾"-Impeller Nut (SAE L-Group) 100 lbs.-ft. (134 N . m)
13. For SAE units, after impeller nut (22) has been
installed, apply LOCTITE
Install impeller set screw into face of impeller nut (22)
and tighten hand-tight.
14. Replace casing wear ring, if removed.
15. Replace casing bolts and tighten, in a crossing se-
quence, to torque values indicated below:
⁄
"-16 bolts (bronze casing)
3
8
½"-16 bolts (cast iron casing) 37 lbs.-ft. (50 N . m)
½"-13 bolts (cast iron casing) 90 lbs.-ft. (122 N . m)
¾"-10 bolts (cast iron casing) 175 lbs.-ft. (237 N . m)
16. Check reassembled unit for binding by rotating shaft
with appropriate tool from motor end.
17. If rubbing exists, loosen casing bolts and proceed
with tightening sequence again.
18. Replace motor hold-down bolts and motor end plug
or cover on close-coupled units.
19. Replace coupling, spacer, coupling guard and frame
hold-down bolts on frame-mounted units.
NOTICE: ALWAYS RECHECK BOTH ALIGNMENTS
AFTER MAKING ANY ADJUSTMENTS.
20. Refer to the "COUPLING ALIGNMENT" section of
this manual to realign shaft.
21. Assembly is complete.
PACKED BOX
1. Make sure stuffing box is free of foreign materials and
clean before beginning packing of packed box. Refer
to Sectional Assembly in the repair parts section.
2. Take special care during installation of packing rings
because they are die-formed. To install, twist the ring
sideways just enough to fit it around the shaft sleeve.
DO NOT ATTEMPT TO PULL RINGS STRAIGHT
OUT. See Figure 12.
CORRECT
Figure 12
10
All manuals and user guides at all-guides.com
#271 to the external
®
#271 to set screw (22A).
®
25 lbs.-ft. (34 N . m)
WRONG
3. Install the two piece Teflon lantern ring supplied as
shown in figure 13. Note: two pieces make one ring.
Notches on ring must face each other, but alignment
is not necessary.
Teflon Lantern Ring
Figure 13
4. Install the packing rings and lantern ring in the fol-
lowing sequence to pack the packed box. Install
two rings of packing, then the lantern ring, followed
by the final three rings of packing. Install each ring
separately and firmly seat. The use of a wooden split
bushing is recommended to accomplish this. See
Figure 14. Use gland to jack the bushing and ring into
the box. Stagger joints in each ring 90°. Make sure the
flush tap in the packed box lines up with the center of
the lantern ring. Any extra rings are spares.
STUFFING
BOX
Figure 14
5. Tighten gland nuts evenly, but not tight. When the
pump is started, slowly tighten the gland nuts until
the leak rate is between 40 and 60 drops per minute.
A grease lubricant can be used when the pumpage
contains abrasive particles or for a suction lift condi-
tion.
REMOVAL OF PACKED BOX
• Follow these steps to remove the packing from the
packed box.
1. Remove gland assembly.
2. With a "packing hook" remove packing.
3. Insert a wire hook into the ring on the outer edge to
remove the lantern ring.
4. Clean the packed box.
PRIME SAFE ARRANGEMENT
(Optional – M & L Group Only)
• The Prime Safe arrangement can be provided with
grease or an oiler feed lubrication.
1. The grease gland (24) will have the letters "G" and
"O"
stamped on the outside diameter and have two
NPT
connections for mounting a grease feeder or oiler.
WOODEN "SPLIT BUSHING"
GLAND
SHAFT
⁄
"
1
8
Publicité
