OM-05816
ULTRA V SERIES
MAINTENANCE & REPAIR
PAGE E - 15
(13 and 14). Install the two remaining back cover
nuts snugly against the adjusting screws.
Remove the first two back cover nuts from their
studs. Turn the adjusting screws clockwise until
they engage the pump casing. Install the locking
collars and hardware (13 and 14). Reinstall the
back cover nuts.
Be sure the wear plate does not scrape against the
impeller.
Over time it may be necessary to repeat the adjust
ment process to compensate for normal wear be
tween the impeller and wear plate. When all of the
adjustment has been used on the back cover side
of the pump, an additional 0.125 inch (3,2 mm) of
adjustment may be obtained by removing the ro
tating assembly spacers (32).
Allow an installed pump to completely cool before
draining liquid from the pump casing. Remove the
back cover. Remove the rotating assembly adjust
ing shims, then reinstall the hardware securing the
rotating assembly to the pump casing. Perform the
back cover adjustment procedure described
above to obtain the proper face clearance.
Suction Check Valve Installation
(Figure 1)
Inspect the check valve assembly (24) and replace
it if badly worn.
Position the check valve in the mounting slot in the
pump casing (1) with the “G‐R” logo facing away
from the inside of the pump casing. Position the
check valve cover (25) over the check valve slot
and secure with the hardware (7 and 26).
NOTE
If the suction or discharge flanges were removed,
replace the respective gaskets, apply `Permatex
Aviation No. 3 Form‐A‐Gasket' or equivalent com
pound to the mating surfaces, and secure them to
the pump casing with the attaching hardware.
PRESSURE RELIEF VALVE
MAINTENANCE
(Figure 1)
The back cover is equipped with a pressure relief
valve to provide additional safety for the pump and
operator (refer to
Liquid Temperature And Over
heating
in
OPERATION
).
It is recommended that the pressure relief valve as
sembly be replaced at each overhaul, or any time
the pump overheats and activates the valve.
Never
replace this valve with a substitute which has not
been specified or provided by the Gorman‐Rupp
Company.
Periodically, the valve should be removed for in
spection and cleaning. When reinstalling the relief
valve, apply `Loctite Pipe Sealant With Teflon No.
592', or equivalent compound on the relief valve
threads. Position the valve as shown in Figure 1
with the discharge port pointing down.
Final Pump Assembly
(Figure 1)
Install the key (24, Figure 2) in the shaft keyway re
connect the power source. Be sure to install any
guards used over the rotating members.
Do not operate the pump without
the
guards in place over the rotating parts.
Exposed rotating parts can catch cloth
ing, fingers, or tools, causing severe in
jury to personnel.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Be sure
the pump and power source have been
properly lubricated, see
LUBRICATION
.
Remove the fill cover assembly (28) and fill the
pump casing with clean liquid. Reinstall the fill
cover, install the clamp bar (30) and secure it with
the capscrew (29). Refer to
OPERATION
, Section
C, before putting the pump back into service.
LUBRICATION
Seal Assembly
(Figure 2)
Before starting the pump, remove the vented plug
(10) and fill the seal cavity with approximately 132
