10
WITH TYPE B-1 CRANE DOUBLE SEAL
Pumps with Fig. No. ending in 8 or 9.
1. Replace the seal on the shaft sleeve to mark
made during disassembly.
If new shaft sleeve (14) is being installed make
temporary installation of shaft sleeve on the shaft
and packing box cover onto the frame and
proceed as follows:
2. Scribe a mark on the shaft sleeve in line with the
stuffi ng box face and remove any burrs thrown
up by the scribe mark. Remove packing box
cover from the frame and sleeve from the shaft.
3. Apply light oil to the shaft sleeve and carefully
slide inboard rotating assembly onto the sleeve
until the end of the spring retainer is located as
below:
a. Pumps with Fig. No. ending in 8 - Position
1.032” from scribe mark.
b. Pumps with Fig. No. ending in 9 - Position
2.53” from scribe mark
Tighten set screws and lock with a punch to
prevent
loosening.
4. Apply light oil to sleeve then slide outboard
rotating assembly onto the sleeve and position
as
follows:
a. Pumps with Fig. No. ending in 8 - Position
spring retainer against inboard retainer and
tighten and lock set screws.
b. Pumps with Fig. No. ending in 9 - Position
spring retainer so there is .062” space
between ends of spring retainers then tighten
and lock set screws.
5. Apply light oil to the outer surface of the
stationary seal seat and o-ring and carefully
press this seat into seal gland (251). Slide
defl ector (40), seal gland and gland gasket (259)
onto the shaft. Place shaft sleeve key (279) in
pump shaft and apply Permatex® or Silastic® to
end of the shaft sleeve. Align sleeve keyway with
key and push sleeve, with seal rotating assembly
onto shaft, until tight against shaft shoulder.
6. Oil the other seal seat and carefully press this
seat into the bore of the packing box cover.
7. Wips the seal faces with light oil then mount
packing box cover on the frame making sure
that
the
fl ange is fully sealed. Position and mount
the seal gland and gasket and replace and
tighten gland cap screw (282).
WITH TYPE BRO - DURA DOUBLE SEAL
1. Apply light oil to the outer surface of the
stationary seal seats and press one seal seat
into seal gland (251) and the other seal seat into
the cavity of the packing box cover (11) wipe seal
faces with light oil. Place defl ector (40), seal
gland and gland gasket (259) on the shaft.
2. Apply light oil to the shaft sleeve (14) and
carefully slide seal rotating assembly onto the
shaft sleeve, aligning the slot in the compression
ring with indentation in the shaft sleeve. Position
rotating assembly on the shaft sleeve so that
when the compression unit of the rotating
assembly is moved laterally on the shaft sleeve
the drive ball can be inserted in the shaft sleeve
recess.
After drive ball is inserted move seal rotating
assembly on the shaft sleeve until compression
ring is centered over the drive ball.
3. Apply Permatex or Silastic sealer to the end of
the shaft sleeve and place shaft sleeve key in
the pump shaft keyway. Align keyway of shaft
sleeve with the key and push shaft sleeve with
seal rotating assembly onto the pump shaft until
shaft sleeve is tight against the shoulder. Wipe
seal faces with light oil.
4. Mount packing box cover on the frame making
sure that the fl ange is fully seated and registered
in the frame. Mount seal gland and gasket and
replace and tighten gland capscrews (282).
IMPELLER (2)
(Replace impeller ring (8), if furnished, before mounting
the impeller).
a. Place impeller key (32) in shalt keyway and sleeve
gasket (38) against shaft sleeve (14) or on the
impeller
hub.
b. Spread a drop of Loctite #601 on shaft and mount
impeller (2) on the shaft. Block coupling end of the
shaft, then lay a block of wood over the suction inlet
of the impeller and tap lightly on the block until
impeller is seated.
c. Assemble the impeller screw O-ring (272), impeller
washer (270) and the impeller screw gasket (28)
onto the impeller screw (26). Apply a drop of Loctite
#601 to the impeller screw and mount the assembly
on the end of the pump shaft. Tighten securely.
d. Place casing gasket (73) on packing box cover
fl ange and mount casing (1) on frame assembly,
then replace cap screws (212).
NOTE:
Casing (1), packing box cover (11) and power
frame must be correctly aligned when reassembled. Be
sure registered fl ange of packing box cover is fully seated
in power frame and that casing is aligned and fully-seated
on packing box cover before tightening cap screws (212).
e. Place suction cover gasket (73) on suction cover
(9) and mount suction cover on casing, replacing
cap screws (215). Replace suction cover wear
ring (25), if required, before mounting suction
cover as above.
WEAR RINGS (8 and 25)
a. Suction Cover Ring (25). Remove all rust, scale and
dirt from ring seat. Place new ring into the suction
cover recess, aligning mounting holes Insert and
tighten machine screws (343), which must be fl ush with
the surface of the ring when seated. Use new machine
screws when replacing ring.
b. Impeller Ring (8). Remove all rust, scale and dirt
from impeller ring seat. Press new ring onto the
impeller, making certain that it is fully seated on the
impeller. Drill and tap new holes for the ring set
screws and install the set screws.
FINAL ASSEMBLY
a. Reassembly pump on the base or base plate.
Mount driver and reassembly coupling. Replace any
tubing or piping required.
b. Adjust impeller clearance per Section D, part 2,
and place pump in operation per Section C.
