Assembly And Disassembly
Single Shaft Seal
Assembly (cont.)
8. Remove impeller and back plate and tigh- 15. Push back plate (21) carefully with static-
ten ��re
'\
ws (3) firmly and evenly to 132 in-
nary seal ring over the shaft on which other
lbs ( 1 t, rt-lbs} using a torque wrench.
seal parts are already mounted. Fit wash
ers (17) and nuts (16) and tighten.
9.
Mount 0-ring
(9)
on stationary seal ring
(8).
10. Screw stationary seal ring into the back
plate (left hand thread) using the spanner
delivered with the pump, and tighten firmly.
11. Mount drive ring on the stub shaft so that
the drive pin (5) on the shaft enters the
notch in the drive ring.
12. Fit 0-ring (12) in the rotating seal ring (11)
as far as possible away from the seal face,
and fit this in the spring (10).
13. Mount spring and rotating seal ring on the
drive ring.
14. Pre-fit the rotating seal ring with spring into
place so that the driver on the drive ring is
located in the notch on the rotating seal.
Release this assembly carefully so that
alignment is maintained.
Note:
The notch in the rotating seal ring must
be exactly opposite to the driver on the
drive ring. Otherwise, the seal ring may
break during continued assembly.
11
Note:
Be very careful that the driver on the
driving ring enters the notch in the rota
ting seal ring.
16. Screw impeller (33) onto stub shaft. Fit im
peller retaining bolt (32), if used. Remem
ber to install 0-ring (34) into 0-ring groove
on face of impeller (33).
17. Install safety shield over adaptor (13) and
secure using thumb screw.
18. Fit 0-ring (22) on back plate.
19. Fit pump casing (25) on back plate and
tighten wing nuts (20) finger tight so that
there is metal-to-metal contact between
casing and back plate.
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