21
y) If the pump is to be sealed with packing, slide the packing
gland (13) over the pump shaft (29) and up against the front
labyrinth seal (76).
z) Install the casing back cover (22) to the bearing housing (26) of
the pH2110 and the pHP2110 series pumps, or to the cradle
spacer of the pH2140, pHP2140, pH2170, pH3170, and
pH2180 series pumps. Install the two capscrews (22A) that
hold the casing back cover (22) into place. Tighten the cap-
screws (22A) to 20 ft. lb.. Do not overtighten.
aa) Place a new impeller gasket (77A) over the end of the pump
shaft (29) and against the shaft sleeve (10). Screw the impeller
(3) on to the end of the pump shaft (29) and tighten it to the
torque value below:
40 ft. lb. for pH2110 and pHP2110 series
90 ft. lb. for pH2140 and pHP2140 series
120 ft. lb. for pH2180 series
ab) Screw the end cover adjusting screws (28B) into the bearing
end cover (28) by hand until they firmly contact the bearing
housing (26). Loosen the bearing end cover capscrews (28A)
and back them off until there is about
1
/4” between the under-
side of the screw heads and the face of the bearing end cover
(28). Carefully tighten the end cover adjusting screws (28B)
evenly (turn each screw the same number of revolutions) until
the clearance between the back of the impeller (3) and the cas-
ing back cover (22) is 0.008” to 0.012”. Measure this clear-
ance with a feeler gauge. Tighten the bearing end cover cap-
screws (28A), to 20 ft. lb. if the pump is of the pH2110 or
pHP2110 series, and 50 ft. lb. if the pump is of the pH2140,
pHP2140, pH2170, pH3170, or pH2180 series. Recheck the
clearance, if it is still correct, tighten the adjusting screw lock
nuts to 20 ft. lb. if the pump is of the pH2110 or pHP2110
series, and 50 ft. lb. if the pump is of the pH2140, pHP2140,
pH2170, pH3170, or pH2180 series.
ac) If the pump is to be sealed with packing, do so now. See the
“Installation and Maintenance of Seal Chamber Packing”
section of this manual. Go to step (ai).
ad) If the mechanical seal, to be installed, is not of the cartridge
type, scribe a line on the shaft sleeve (10) exactly in line with
the face of the seal chamber as described in the section
“Installation of Mechanical Seals”.
ae) Remove the impeller (3). Remove the casing back cover (22).
af) Install the mechanical seal components onto the shaft sleeve
(10). See the “Installation of Standard Mechanical Seals”
section of this manual, and the seal drawing supplied with the
new mechanical seal.
ag) Install the casing back cover (22), to the bearing housing (26)
of the pH2110 and pHP2110 series pumps, or to the cradle
spacer of the pH2140, pHP2140, pH2170, pH3170, or
pH2180 series pumps. Install the two capscrews (22A) that
hold the casing back cover (22) into place. Tighten the cap-
screws (22A) to 20 ft. lb. Do not overtighten.
ah) Reinstall the impeller gasket (77A) and the impeller (3) onto the
pump shaft (29). Tighten the impeller (3) to 40 ft. lb. for
pH2110 and pHP2110 series pumps. Tighten the impeller (3)
to 90 ft. lb. for pH2140 pHP2140, pH2170, and pH3170
series pumps. Tighten the impeller (3) to 120 ft. lb. for the
pH2180 series pumps.
ai) Rotate the pump shaft by hand to be sure there is no internal
rubbing or binding.
aj) The partial assembly can now be taken to the installation site.
Use proper lifting equipment and methods.
ak) Place a new casing gasket over the casing back cover (22). Un-
screw the two casing jack bolts, in the flange of the bearing
housing (26) of the pH2110 and pHP2110 pumps, or the cra-
dle spacer (7) of the pH2140, pHP2140, pH2170, pH3170,
or pH2180 series pumps, until neither protrudes from the flange
towards the casing. Inspect the face of the casing, where the
jack screws made contact during disassembly, and carefully
remove any burrs with a file.
al) Using a hoist, to lift and position, the partial pump assembly,
install it into the pump casing (5). If the pump is of the pH2110,
pHP2110, pH2140, pHP2140, pH2170, or pH2180 series,
screw the casing capscrews (5D) by hand into the casing (5)
but do not tighten them yet. If the pump is of the pH3170
series, screw the casing stud nuts (5C) onto the casing studs
(5D) by hand but do not tighten them yet.
am) If the pump and driver are independently mounted to a com-
mon baseplate, go to step (ax).
an) If the pump and driver are connected together by a “C” faced
motor support (83), place wood blocks and wedges under the
bearing housing (26) to support the pump.
ao) Place the motor coupling hub onto the motor shaft to the loca-
tion noted below, and tighten the set screws.
On motor sizes 143TC and 145TC,
place the motor hub flush with the end of the motor shaft.
On motor sizes 182TC and 184TC,
place the motor hub so that the motor shaft protrudes
1
/4”.
On motor sizes 213TC and 215TC,
place the motor hub to overhang the motor shaft by
5
/16”.
On motor sizes 254TC and 256TC,
place the motor hub flush with the end of the motor shaft.
On motor sizes 284TSC and 286TSC,
place the motor hub to overhang the motor shaft by
3
/16”.
On motor sizes 324TSC, 326TSC, 364TSC and 365TSC,
place the motor hub flush with the end of the motor shaft.
ap) On motor sizes 143TC, 145TC, 182TC and 184TC, bolt the
spacer section of the coupling to the motor hub.
aq) Place the coupling elastomer into the pump coupling hub.
ar) Lift the motor and motor support (83) assembly, with a hoist,
and position it so that the motor support pilots onto the end of
the bearing housing (26) and so that the motor end of the cou-
pling engages the coupling elastomer that is retained in the
pump hub of the coupling. It may be necessary to rotate the
motor shaft slightly to allow the coupling components to
engage. Install the bolts that retain the motor support (83) to the
bearing housing (26). Hand tighten the bolts.
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