Gorman-Rupp Pumps 02D3-E1 3P 251494 and up - Manual (Page 25)

OM-01118 0 SERIES
MAINTENANCE & REPAIR PAGE E - 7
D
B
2
A B
2
C D
E
Step 2 Step 1 Step 3
A+
B
2
C+
D
2
E = -
Figure 3. Centering Impeller Within Vane Plate Scroll
Install the correct thickness of impeller shims (14)
and screw the impeller onto the shaft until fully
seated.
Apply “Loctite Threadlocker No. 242” or equivalent
compound to the impeller shaft threads. Immobi­
lize the motor shaft by inserting a large flat head
screwdriver into the slot in the end of the shaft in
the front end of the motor. Secure the impeller with
the impeller jam nut (18). Torque the nut to 15 ft.
lbs. (180 in lbs. or 2,07 m. kg.).
Clean all of the old adhesive from the vane plate
and its mating surface on the intermediate. Apply a
thin film of “3M Gasket Adhesive No. 847” or equiv­
alent compound to the vane plate and secure the
vane plate to the intermediate bracket using the
machine screws (5).
NOTE
After the vane plate has been installed, check for
free shaft rotation. Correct any scraping binding
before further reassembly.
Pump Reassembly
Install the vane plate O‐ring (21) onto the vane
plate shoulder. Install the casing gasket (6). Ease
the pump casing over the vane plate. Be careful
not to damage the O‐ring. Secure the casing to the
intermediate bracket with the nuts (8).
Final Pump Assembly
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Fill the pump casing with clean liquid. Reinstall the
fill plug (4) and tighten it.
Refer to OPERATION, Section C, before putting
the pump back into service.
LUBRICATION
Seal Assembly
The seal assembly is lubricated by the medium be­
ing pumped and no additional lubrication is re­
quired.