Gorman-Rupp Pumps 82D1-GX160 1257391 and up - Manual (Page 26)

OM−05297 80 SERIES
MAINTENANCE & REPAIR PAGE E − 9
Pump Casing Installation
(Figure 2)
If the wear plate (14) was removed for replace-
ment, secure it to the pump casing using the at-
taching hardware (15, 16, 18 and 19) at this time.
Replace the fiber washer (19) if badly worn or com-
pressed.
Install the same thickness of pump casing gaskets
(13) as previously removed, and secure the pump
casing to the intermediate with the nuts (12). 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. Set this
clearance by adding or removing gaskets in the
pump casing gasket set (13) until the impeller
scrapes against the wear plate when the shaft is
turned. After the impeller binds, add approximately
.008 inch (0,20 mm) of gaskets.
After the face clearance has been set, tighten the
nuts securing the pump casing to the intermediate.
(Figure 1)
Secure the pump casing (1) to the base (7) with the
previously removed hardware (16, 17 and 18). Be
sure to reinstall any leveling shims used under the
casing mounting feet.
Suction Check Valve Installation
(Figure 2)
Inspect the check valve components and replace
as required. Subassemble the check valve weights
(23 and 24) and check valve (27) using the attach-
ing hardware (25 and 26).
Position the check valve assembly (22) in the suc-
tion port with the large weight toward the inside of
the pump casing. Install the suction flange (30),
and secure with the nuts (21). Check the operation
of the check valve to ensure proper seating and
free movement.
Final Pump Assembly
(Figure 1)
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 (31, Figure 2) and 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.
LUBRICATION
Seal Assembly
(Figure 2)
The seal assembly is lubricated by the medium be-
ing pumped, and no additional lubrication is re-
quired.
Engine
Consult the literature supplied with the engine, or
contact your local engine representative.