GORMAN-RUPP 62-1/2E13-4A084, Technical Manual, Page: 58 / 107

d . Reassembly and Installation. Pump reassembly
and installation are essentially the reverse of the
disassembly sequence. Refer to figures 3-13 and 3-14
and to torque values in paragraph 1-3b(3). Give
p a r t i c u l a r a t t e n t i o n t o t h e f o l l o w i n g :
(1)
(2)
(3)
(4)
(5)
(6)
Install the splined coupling (53) on the engine
with four capscrews (51).
Press the oil seal (50) in the seal seat of the
intermediate bracket (42) so that the lip faces
the bearing bore.
Pack the ball bearing (48) with grease per MIL-
G-23827. Install the retaining ring (49) in the
groove of the impeller shaft (44). Press the
ball bearing (48) into the shaft until it engages
the retaining ring. Install the second retaining
ring to retain the bearing.
The bearing (48), pressed on the impeller shaft,
is a light push fit into the intermediate bracket
(42). Install the assembled bearing and impeller
shaft in the bracket. Press the seal (46) in the
bearing retainer (45) and position the assembled
seal and retainer in the bearing bore of the
intermediate bracket with the lip of the seal
facing the bearing. Retain the assembled parts
with the retaining ring (43).
Position the assembled intermediate bracket and
shaft, hoisting bracket (41 ) and guard (40) on the
engine. Secure with eight capscrews (36 and 38)
and lockwashers (37 and 39). Tighten the cap-
screws to 15-20 ft-lbs.
The shaft seal assembly (33) consists of sta-
tionary ring and a rotary element as shown in
figure 3-14. The stationary ring uses an O-ring
around its circumference to seal the stationary
ring in the seat of the seal plate. The one face
of the stationary ring is lapped and must face
outward so that it can be engaged by the mating
face of the rotary seal. The rotary element of
the seal is held into engagement with the sta-
tionary ring by a spring which is part of the
seal assembly.
Caution: Take care during the installation of the
stationary ring so that the lapped face is
not marred. Install the ring until it bottoms
in the bore. A marred face or an im-
(7)
(8)
(9)
properly seated stationary ring will result
in a leak when the pump is restored to
service.
Lubricate the bore of the seal plate (32) with a
light coat of oil, MIL-L-2104, grade 10. Install
the O-ring on the stationary ring of the seal
assembly in the seal plate. Position the seal
plate on the intermediate bracket and secure
with eight nuts (19). Take care not to dislodge
the stationary ring during installation.
Lubricate the internal diameter of the rubber
sleeve of the rotary portion of the seal with oil,
MIL-L-2104, grade 10. One end of shaft sleeve
(34) has a bevel on the internal diameter. Insert
the shaft sleeve into the rubber sleeve so that
the beveled end is on the same end as the lapped
seal face and approximately flush with the lapped
face of the rotating element.
Install the assembled shaft sleeve and rotary
element of the shaft seal on the impeller shaft
so that the lapped surface of the rotary seal
faces the engine. Push the shaft sleeve onto the
shaft until it seats against the shaft shoulder.
Caution. Make sure that no dust or foreign material
is on the lapped surfaces of the seal ele-
ments as the lapped surfaces engage.
(10)
(11)
(12)
If no parts except seal (33) have been replaced,
the thickness of shims (28) which had been used
between the shaft sleeve and impeller may be
reinstalled. If the impeller shaft, intermediate
bracket, seal plate, or impeller was replaced,
add shims between the impeller and shaft sleeve
to provide clearance between the impeller and
seal plate and equalize the distance between the
impeller and housing parts. Refer to figure 3-14.
Shims are provided in thicknesses of 0.005,
0.010, and 0.030.
Install the volute casing (21) and gasket (22).
Secure with eight nuts and torque to 15-20 ft-
lbs. Make sure no rubbing occurs between
the impeller and casing. If necessary, remove
some of the shims that were installed between
the impeller and shaft sleeve.
Refer to figure 3-13 and complete reassembly
of the pump.
3-14