Gorman-Rupp Pumps 14D2-12LD477 S/G 1348079 and up - Manual (Page 31)

OM−05967 10 SERIES
MAINTENANCE & REPAIR PAGE E − 13
Pump Casing Installation
(Figure 3)
Install the same thickness of pump casing gaskets
(24) as previously removed and secure the pump
casing (1) to the intermediate with the nuts (17). Do
not fully tighten the nuts at this time.
A clearance of .008 to .015 inch (0,20 to 0,38 mm)
between the impeller and the wear plate is also rec-
ommended for maximum pump efficiency. Install
the back cover and set this clearance by adding or
removing gaskets in the pump casing gasket set
until the impeller scrapes against the wear plate
when the shaft is turned. After the impeller scrapes,
add .015 inch (0,38 mm) of gaskets.
NOTE
An alternate method of adjusting this clearance is to
reach through the discharge port with a feeler
gauge and measure the gap. Add or subtract pump
casing gaskets accordingly.
After the face clearance has been set, install the
grease cup mounting bracket (13), grease cup
(12) and piping (14, 15 and 16) and tighten the
hardware securing the pump casing to the inter-
mediate.
See Figure 1 and secure the pump casing to the
base (3) with the hardware (13, 14, 15 and 16). Be
sure to reinstall any leveling shims used under the
mounting feet of the pump casing.
Back Cover Installation
(Figure 3)
Inspect the wear plate (28) and replace it if badly
worn or grooved. Install the wear plate on the back
cover using the hardware (30 and 31).
Clean any scale or debris from the back cover
shoulder and pump casing which might prevent a
good seal.
Replace the back cover gasket (32) and slide the
back cover assembly (35) into the pump casing.
NOTE
Apply a film of ‘Never-Seez’ or equivalent com-
pound on the back cover shoulder or any surface
which contacts the pump casing to ease future dis-
assembly and to reduce rust and scale build up.
Secure the back cover assembly to the pump cas-
ing using the washers and wing nuts (33 and 34).
Do not over-tighten the wing nuts; they should be
just tight enough to ensure a good seal at the back
cover shoulder.
Check for any scraping or binding and correct any
that exists before putting the pump back into ser-
vice.
Suction Check Valve Installation
(Figure 3)
Inspect the check valve components and replace
as required. Subassemble the check valve weights
and check valve gasket with the previously re-
moved hardware (not shown).
Position the check valve assembly (5) in the suc-
tion port with the large weight toward the inside of
the pump casing. Install the suction flange (4) and
secure with the nuts (22). Check the operation of
the check valve to ensure proper seating and free
movement.
Final Pump Assembly
(Figure 3)
Be sure the pump and engine are securely
mounted to the base.
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 engine have been properly
lubricated, see LUBRICATION.
Remove the fill plug assembly (7). Fill the pump
casing with clean liquid. Reinstall the fill plug and
tighten it.
Refer to OPERATION, Section C, before putting
the pump back into service.