Gorman-Rupp Pumps VS4A60-B 1400845 and up - Manual (Page 38)

OM-06013 ULTRA V SERIES
MAINTENANCE & REPAIR PAGE E - 14
pump casing and O‐ring (22) from the transition
chamber.
If the transition chamber requires removal from the
Ultra V first stage pump, support the chamber us­
ing a suitable hoist and sling. See Figure 1 and re­
move the mounting hardware (8 and 9). Use the
hoist and sling to remove the transition chamber
and remove the gasket (7).
Pump Casing and Transition Chamber Installa­
tion (Ultra Mate Second Stage Model Only)
(Figure 1)
Apply `Permatex Aviation No. 3 Form‐A‐Gasket' to
the mating surfaces and install a new gasket (7).
Using the hoist and sling, position the transition
chamber (5, Figure 3) on top of the first stage pump
casing. Secure the transition chamber by installing
the hardware (8 and 9). Remove the sling from the
transition chamber.
(Figure 3)
Lubricate a new O‐ring (22) with a generous
amount of grease and install it over the shoulder on
the transition chamber. Using the same lifting
method as used for disassembly, position the
pump casing (1) over the transition chamber
shoulder and secure it with the previously removed
hardware (6 and 8). Remove the sling and, if used,
the lifting device from the pump casing and rein­
stall the pipe plug (4).
Do not attempt to lift the complete pump
unit using the lifting device. It is de­
signed to facilitate removal or installa­
tion of individual components only. Ad­
ditional weight may result in damage to
the pump or failure of the lifting device.
Shaft and Bearing Reassembly and Installation
(Figure 4)
Clean the bearing housing, shaft and all compo­
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage as necessary.
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
precautions printed on solvent contain­
ers.
Inspect the shaft for distortion, nicks or scratches,
or for thread damage on the impeller end. Dress
small nicks and burrs with a fine file or emery cloth.
Replace the shaft if defective.
Position the inboard oil seal (6) in the bearing hous­
ing bore with the lip positioned as shown in Figure
4, Detail C. Press the oil seal into the housing until
the face is just flush with the counterbored surface
toward the inside of the housing.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear­
ings are removed.
The bearings (23 and 26) may be heated to ease
installation. An induction heater, hot oil bath, elec­
tric oven, or hot plate may be used to heat the bear­
ings. Bearings should never be heated with a di­
rect flame or directly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearings, both the
oil and the container must be absolutely clean. If
the oil has been previously used, it must be thor­
oughly filtered.
Heat the bearings to a uniform temperature no
higher than 250
_
F (120
_
C), and slide the bearings
onto the shaft, one at a time, until they are fully
seated. This should be done quickly, in one con­
tinuous motion, to prevent the bearings from cool­
ing and sticking on the shaft.