Gorman-Rupp Pumps 04E1-GHH 1076270 and up - Manual (Page 37)

0 SERIES OM−03688
MAINTENANCE & REPAIR PAGE E − 12
If replacement is required, remove the hardware (5
and 6), and separate the discharge flange and O-
ring (4 and 7) from the pump casing.
If the pump casing is to be replaced, see Figure 3
and remove the hardware securing the cross
member kit (30) to the pump casing.
If no further disassembly is required, proceed with
PUMP AND SEAL REASSEMBLY. If the gearbox
requires disassembly, do not reassemble the
pump components at this time. Refer to GEAR-
BOX DISASSEMBLY and GEARBOX REASSEM-
BLY, followed by PUMP AND SEAL REASSEM-
BLY.
PUMP AND SEAL REASSEMBLY
If the gearbox requires disassembly, refer to
GEARBOX DISASSEMBLY and GEARBOX RE-
ASSEMBLY, followed by PUMP AND SEAL REAS-
SEMBLY.
Unless otherwise specified, the instructions in this
section are keyed to Figure 1 and the accompany-
ing parts list.
Pump Casing Installation
If the wear ring (19) was removed, position the re-
placement ring in the pump casing with the cham-
fered end toward the bore shoulder. Press the wear
ring into the pump casing until fully seated.
NOTE
The wear ring
must seat squarely in the pump cas-
ing; otherwise, binding and/or excessive wear will
occur as the shaft turns.
Apply a thin coat of Permatex Aviation No. 3 Form-
A-Gasket" to the contact surfaces of the oil seal
(14) and the casing bore. Position the oil seal in the
pump casing bore with the lip positioned as shown
in Figure 1. Press the oil seal into the bore until fully
seated against the bore shoulder.
Install the stationary seal element and O-ring in the
seal bore as described in Seal Reassembly and
Installation before securing the pump casing to
the adaptor.
With the stationary seal seat installed in the seal
bore of the pump casing, lubricate the O-ring (12),
and slide it onto the pump casing shoulder.
Align the drain hole in the pump casing gasket (18)
with the drain passage in the pump casing, and in-
stall it over the casing studs (16).
Before further reassembly, calculate the thickness
of bearing adjusting shims (13) required to obtain a
shaft end play of .001 to .005 inch (0,025 to 0,127
mm). Use a depth micrometer to measure the
height of the pump casing shoulder (with the gas-
ket installed), and the depth of the bearing in the
gearbox housing from the gasket mating surface.
Select a combination of shims to make up the dif-
ference between the two measurements, and in-
stall the bearing shims in the bearing bore.
Lubricate the lip of the oil seal (14) to ease installa-
tion. Apply Never-Seeze" or equivalent com-
pound to the casing studs (16). Carefully slide the
pump casing over the shaft until fully seated
against the gearbox housing. Be careful not to
damage the lip of the oil seal or the stationary seal
element.
Secure the pump casing to the gearbox housing
with the nuts (17).
If the discharge flange (7) was removed, lightly oil
the new O-ring (4), and install it in the groove in the
flange. Slide the flange into the pump casing, using
caution not to cut the O-ring. Secure the flange with
the hardware (5 and 6).
If removed, secure the cross member kit (30) to the
pump casing with the previously removed hard-
ware (see Figure 3).
Seal Reassembly and Installation
(Figures 1 and 4)
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven-
tilated area free from excessive heat,
sparks, and flame. Read and follow all