20
j) If the pump is of the pH2110 or pHP2110 series, install the
tapered retaining ring (75A) into the groove in the pump shaft
(29) with the tapered side away from the bearing.
k) If the pump is of the pH2140, pHP2140, pH2170, pH3170,
or pH2180 series, place a new bearing lock washer (31A)
onto the pump shaft. Tighten the bearing lock nut (31) against
the lock washer (31A), while holding the shaft (29) against rota-
tion with a hook spanner in the keyway. Another way to keep
the shaft from turning is to place the coupling hub onto the shaft
and hold it with a wrench. Tighten the nut to the torque value
below:
75 ft. lb. on the pH2140 & pHP2140 series
90 ft. lb. on the pH2170 & pH3170 series
100 ft. lb. on the pH2180 series
Bend one of the tabs of the bearing lock washer (31A) into the
corresponding slot in the bearing lock nut (31).
l) Lubricate the O.D. of the thrust bearing (25A), the bore of the
end cover (28), the I.D. of the rear labyrinth seal (76A), and the
area of the pump shaft (29) on which the labyrinth will be
mounted. Slide the bearing end cover (28), labyrinth seal (76A)
assembly carefully over the end of the pump shaft (29), and
fully onto the thrust bearing (25A). Be careful that the o-ring in
the I.D. of the labyrinth seal (76A) does not contact the keyway
of the shaft (29) and be damaged. Placing a piece of plastic
electrical tape over the keyway, before this assembly operation,
will give a measure of protection. The fit between the bearing
(25A) and the bearing end cover (28) may be tight enough that
you may need to tap the end of the pump shaft (29) lightly with
a soft faced hammer to slide the bearing (25A) into the bearing
end cover (28).
m) If the pump is of the pH2110, pHP2110, pH2140, or
pHP2140 series, install the large tapered retaining ring (75B),
with the tapered side away from the bearing (25A), into the
bearing end cover (28) and against the face of the thrust bear-
ing (25A). Position the gap between the ends of the retaining
ring (75B) so that it is centered over the oil return slot in the bore
of the end cover (28). If the pump is of the pH2170, pHP3170,
or pH2180 series, install the bearing lock ring (231) into the
bearing end cover (28) and against the face of the thrust bear-
ing. Place the bearing lock ring washers (231B) onto the bear-
ing lock ring screws (231A) and snug them evenly against the
bearing lock ring (231). Tighten the bearing lock screws
(231A) evenly to 8 ft. lb.
n) Press a new radial bearing (25) onto the pump shaft (29) and
against the shaft shoulder. Press on the inner race, of the bear-
ing, only, do not press on the outer race of the bearing. Press
against the coupling end of the pump shaft (29), do not press
against the end cover (28).
o) Lubricate and install a new end cover gasket (77B), which is an
o-ring, into the groove in the O.D. of the bearing end cover
(28).
p) Lubricate the I.D. of the front labyrinth seal (76), both of the
bores in the bearing housing (26), the O.D. of the radial bear-
ing (25), the O.D. of the bearing end cover (28), and the area
of the pump shaft (29) onto which the front labyrinth seal (76)
will be located.
q) Carefully slide the shaft (29) and bearing (25 & 25A) assem-
bly, impeller end of shaft first, into the bearing housing (26),
from the back end of the bearing housing. Rotate the bearing
end cover (28) so that the “expulsion port” of the rear labyrinth
seal (76A) is towards the bottom of the bearing housing (26).
At this point the drilled holes in the bearing end cover (28)
will line up with the tapped holes in the bearing
housing (26). Be careful to hold the axis of the shaft (29) inline
with the axis of the bearing housing (26), and not damage the
o-ring in the bore of the front labyrinth seal (76).
r) Back-off the end cover adjusting screws (28B) until they are not
protruding through the opposite side of the flange of the bear-
ing end cover (28). Install the bearing end cover capscrews
(28A) and lightly snug them down, about 5 ft. lbs.
s) If the pump was purchased with the optional bearing housing
oil cooler (109), re-install it into the bearing housing (26). Install
the oil cooler (109) into the open 1” NPT connection and care-
fully guide the end of the tubing through the tubing connector
on the opposite side of the bearing housing (26). Apply pipe
sealant to the 1” male pipe threads, and tighten the 1” tube
connector into the bearing housing (26) with a torque of 50 ft.
lb. The ferrules used in these tube connectors are plastic, to
enable dis-assembly and re-assembly without damaging the
cooling tube. When tightening these connectors, tighten only to
5 ft. lb.
t) If the pump is of the pH2140, pHP2140, pH2170, pH3170,
or pH2180 series, and if the cradle (7) was removed, replace
it. Center the four tapped holes in the cradle (7) in the holes in
the bearing housing (26). Install the capscrews and tighten
them to:
50 ft. lb. for series pH2140, pHP2140, pH2170, and
pH3170
65 ft. lb. for series pH2180 series
u) Replace the shaft sleeve key (10K) and install a new shaft
sleeve (10) onto the pump shaft (29).
v) Replace the coupling key into the keyway at the coupling end
of the pump shaft (29).
w) If the pump and driver are independently mounted to a com-
mon baseplate, place the pump coupling hub (including the
four axial bolts) onto the pump shaft (29), flush with the end of
the pump shaft, and tighten the set screws. Go to step (y).
x) If the pump and driver are connected together by a “C” faced
motor support (83), place the pump coupling hub onto the
pump shaft (29) to the location noted below, and tighten the set
screws.
For use with motor sizes 143TC and 145TC,
place pump hub to overhang the pump shaft by
1
/
16
”.
For use with motor sizes 182TC and 184TC,
place pump hub so that the pump shaft protrudes
3
/
16
”.
For use with motor sizes 213TC and 215TC,
place pump hub to overhang the pump shaft
5
/
16
”.
For use with motor sizes 254TC and 256TC,
place the pump hub flush with the end of the pump shaft.
For use with motor sizes 284TSC and 286TSC,
place pump hub to overhang the pump shaft by
3
/
16
”.
For use with the motor sizes 324TSC, 326TSC,
364TSC and 365TSC,
place the pump hub flush with the end of the pump shaft.
