Gorman-Rupp Pumps T10A60S-6068T 1268074 and up - Manual (Page 48)

OM−05521 SUPER T SERIES
MAINTENANCE & REPAIR PAGE E − 20
good seal with the suction head or interfere with
the wear plate (31). Inspect the wear plate for wear
or damage and replace as required. Slide the wear
plate into the pump casing until fully seated.
Replace the suction head gasket (25) and lubricate
it with a generous amount of No. 2 grease. Use a
suitable hoist and sling to position the suction head
against the pump casing, and secure it with the
hardware (27, 28, 29 and 30).
NOTE
To ease future disassembly, apply a film of grease
or ‘Never-Seez’ on the suction head, or any surface
which contacts the pump casing. This action will re-
duce rust and scale build-up.
Suction Check Valve Installation
(Figure 3)
Inspect the check valve components and replace if
badly worn.
Reach through the cleanout cover opening with
the check valve and secure it with the pivot caps
(52) and hardware (48, 50 and 51).
NOTE
If the check valve body (53) was removed, install
the check valve and secure the body to the suction
head with the shoulder type clamp (36).
Securing Pump End To Engine
(Figure 5)
Install the shaft key (17, Figure 4) in the shaft key-
way. Position the flexible portion of the coupling as-
sembly (3) on the shaft as shown in Figure 5.
Align the keyway in the bushing (2) with the shaft
key, and slide it onto the shaft until it is just flush
with the end of the shaft. Rotate the flexible portion
of the coupling until the tapped holes for the two
setscrews align with those in the bushing, and in-
stall the setscrews.
Make certain that the flexible portion of the
coupling is mounted as shown in Figure 5.
This is critical. If the coupling is not prop-
erly positioned on the shaft, the coupling
parts may not fully engage, or a pre-load
condition can cause premature bearing
failure.
The end of the shaft must be just flush with
the face of the bushing. This will allow the
two portions of the coupling to fully engage
when the drive flange is secured to the en-
gine bellhousing, without pre-loading the
bearings.
With the flexible portion of the coupling and the
bushing properly positioned on the shaft, tighten
the two setscrews in an alternating sequence until
the bushing and coupling are fully secured. Torque
the setscrews to 23.3 ft. lbs. (280 in. lbs. or 3,2 m.
kg.).
If the complete coupling assembly is being re-
placed, apply ‘Loctite Retaining Compound No.
242’ or equivalent to the threads of the hardware (4
and 5), and secure the outer ring of the coupling to
the engine flywheel by torquing the hardware to 45
ft. lbs. (540 in. lbs. or 6,2 m. kg.).
Using a suitable lifting device, position the pump
end so the flexible portion of the coupling seats in-
side the outer ring attached to the engine flywheel.
NOTE
To ease installation, lightly lubricate the rubber por-
tion of the coupling with a non-petroleum based
lubricant such as vegetable oil or glycerin, or a sili-
con-based lubricant such as WD40" or equivalent.
Do not use petroleum-based lubricants, or any oth-
er substance which may soften or otherwise dam-
age the rubber.
Install the intermediate guards (35, Figure 4), and
secure the drive flange to the engine bellhousing
with the hardware (6 and 7).