Gorman-Rupp Pumps UNIT 608 1395614 and up - Manual (Page 36)

UNIT SERIES OM-01228
MAINTENANCE & REPAIR PAGE E - 16
D
B
2
A B
2
C D
E
Step 2 Step 1 Step 3
A+
B
2
C+
D
2
E = -
Figure 8. Centering Impeller Within Vane Plate Scroll
Install the correct thickness of impeller shims and
screw the impeller onto the shaft until fully seated.
NOTE
At the slightest sign of binding, immediately back
the impeller off, and check the threads for dirt.
Do
not try to force the impeller onto the shaft.
When the impeller is properly positioned, apply
`Loctite Threadlocker No. 242' or equivalent com­
pound to the shaft threads and screw the impeller
nut (18) onto the shaft until tight.
NOTE
After the impeller has been properly positioned,
check for free rotation. Correct any scraping bind­
ing before further reassembly.
Clean any remaining adhesive sealant from the
faces of the vane plate (15) and intermediate. Ap­
ply a thin coating of `3‐M Scotch Grip Adhesive No.
847' or equivalent compound to the face of the in­
termediate. Secure the vane plate to the intermedi­
ate bracket using the machine screws (9).
Pump Reassembly
(Figure 2)
Install the vane plate O‐ring (29) into the groove in
the vane plate. Install the pump casing gasket (5).
Ease the pump housing over the vane plate. Be
careful not to damage the vane plate O‐ring. Se­
cure the housing to the intermediate bracket with
the nuts (8).
Final Pump Assembly
(Figure 1)
Secure the pump casing to the base (33) with the
previously removed hardware (51, 52 and 53). If re­
moved, reinstall the eductor (2) and piping. Install
the hose (5) in the elbow (3). Make certain that all
piping connections are tight, properly supported
and secure.
(Figure 2)
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.