Gorman-Rupp Pumps 610M20-B 688324 and up - Manual (Page 24)

OM−01391 60 SERIES
MAINTENANCE & REPAIR PAGE E − 5
Impeller And Pump Casing Removal
Before attempting to remove the impeller (2) re-
move the bottle oiler and piping (16, 17, 18 and 19).
This will prevent oil from escaping when the impel-
ler is removed.
Immobilize the impeller by wedging a block wood
between the vanes and the pump casing, and re-
move the impeller capscrew and washer (42 and
43). Remove the wood block.
Install two 3/8-16 UNC capscrews (not supplied) in
the tapped holes in the impeller. Attach a suitable
puller to the capscrews and tighten the puller
screw to pre-load the impeller. Strike the puller
screw sharply with a hammer until the impeller
breaks loose from the shaft. Remove the puller and
the screws from the impeller.
Inspect the wear ring (41) for excessive wear or
damage. The wear ring is secured on the impeller
(2) by a press fit. If replacement is required, use a
small bit to drill three holes horizontally through the
ring, 120
_ apart. Use a chisel or other suitable tool
to complete the cuts through the ring and remove
the ring from the impeller. Be careful not to dam-
age the impeller when removing the ring.
Use a hoist and sling to support the pump casing
(1) and remove the nuts (13). Separate the casing
and casing gasket (7) from the pedestal (32).
Seal Removal
Carefully remove the seal spring. Apply oil to the
shaft sleeve (12) and work it up under the rubber
bellows. Slide the rotating portion of the seal as-
sembly off the shaft as a single unit.
Carefully slide the seal plate (11) and stationary
portion of the seal off the shaft as a unit. Inspect the
oil seal (11) and, if replacement is required, press it
from the seal plate. Press the stationary portion of
the seal out of the seal plate from the back side.
Inspect the shaft sleeve (15) for excessive scoring
or wear. The shaft sleeve is secured to the shaft by
a heat shrink fit. If replacement is required, use a
torch to heat the sleeve evenly until it can be pulled
off of the shaft.
If no further disassembly is required, refer to Seal
Reassembly And Installation.
Shaft And Bearing Removal And Disassembly
When the pump is properly operated and main-
tained, the shaft and bearings should not require
disassembly. Disassemble the shaft and bearings
only when there is evidence of wear or damage.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly
equipped shop by qualified personnel.
NOTE
There are no provisions for draining the lubricant
from the pedestal. Place a drip pan under the ped-
estal before disassembly.
Disengage the hardware (24 and 25) and remove
the bearing cap (29), gasket (23) and bearing
shims (30). Press the oil seal (28) from the bearing
cap.
Place a block of wood against the impeller end of
the shaft (27), and tap the shaft and assembled
bearings from the pedestal.
If replacement is required, disengage the hard-
ware (36 and 37) and remove the inboard bearing
cap (35) and gasket (34).
After removing the shaft and bearings, clean and
inspect the bearings (21 and 32) in place as fol-
lows.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear-
ings are removed.