Gorman-Rupp Pumps 06C1-GHH 1071445 and up - Manual (Page 39)

0 SERIES OM-03179
MAINTENANCE & REPAIR PAGE E - 14
5 _ TAPER
(APPROX.)
SLEEVE
1.25 D
1.62
FINISH ALL OVER TO
BE 50 RMS OR LESS ENDS TO BE SQUARE
AND PARALLEL
41,15 mm
31,75 mm
IMPELLER
SHAFT
SEAL
AREA
KEYWAY
1.50 D
38,1 mm
SLEEVE DIMENSIONS SLEEVE INSTALLED
Figure 5. Seal Installation Sleeve
Lubricate the tapered sleeve and position it on the
shaft. Position the rotating portion of the seal (con­
sisting of the retainer, bellows and rotating ele­
ment) on the sleeve, and apply even pressure
against the shoulder of the seal retainer until the ro­
tating subassembly slides onto the shaft and the
seal faces contact. A push tube cut from a piece of
plastic tubing would aid this installation. The I.D. of
the tube should be approximately the same diame­
ter as the I.D. of the seal spring.
Remove the tapered sleeve and install the seal
spring.
Impeller Installation
Inspect the impeller and replace it if cracked or
badly worn.
For maximum pump efficiency, the impeller must
be centered within the volute scroll. Center the im­
peller by adding or removing adjusting shims (18).
To verify impeller positioning, measure the pump
casing and impeller as shown in Figure 6. Use
these measurements to calculate the required im­
peller location (dimension E). Add or remove im­
peller adjusting shims until dimension E is ob­
tained.
D
B
2
A B
2
C D
E
Step 2 Step 1 Step 3
A+
B
2
C+
D
2
E = -
Figure 6. Centering Impeller Within Volute Scroll