Gorman-Rupp Pumps 08C1-GA 1026171 and up - Manual (Page 25)

OM−01265 0 SERIES
MAINTENANCE & REPAIR PAGE E − 5
good repair and with adequate capacity
to prevent injuries to personnel or dam-
age to equipment.
Disconnect the P.T.O. shaft from the gearbox drive
shaft. Remove all the hardware securing the pump
and gearbox to the vehicle chassis. Tie and tag the
any leveling shims used under the casing mount-
ing feet to ease reassembly. Move the pump and
gearbox to a clean, well-equipped shop for mainte-
nance and repair.
Suction Head and Wear Ring Removal
The wear ring (45) can be serviced by removing the
suction head (52). Remove the nuts (48) and pull
the suction head and wear ring out of the pump
casing. Remove the suction head gasket (44).
Inspect the wear ring (45) for excessive wear or
scoring. The wear ring is secured in the suction
head by a press fit. If replacement is required, use
a small bit to drill two holes through the ring hori-
zontally, 180
_ apart. Use a chisel to complete the
cuts through the ring, and remove it from the suc-
tion head. Use caution not to damage the suction
head bore when removing the ring.
Use caution not to damage the suction
head when removing the wear ring.
Impeller Removal
Immobilize the impeller (2) by inserting a brass rod
through the discharge port and wedging it in the
impeller vanes. Be careful not to damage the im-
peller. Remove the impeller nut (50) and washer
(49). Remove the brass rod.
Install three 3/8-16 UNC x 2-1/2 inch long cap-
screws in the tapped holes in the impeller, and use
a suitable puller to remove the impeller from the
shaft. Retain the shaft key (51). Remove the impel-
ler adjusting shims (55). Use caution when remov-
ing the impeller; tension on the seal spring will be
released as the impeller is removed.
Seal Removal and Disassembly
Remove the seal spring. Lubricate the pinion shaft
(35) adjacent to the seal, and work oil up under the
rubber bellows. Slide the rotating portion of the
seal off the shaft.
Use a pair of stiff wires with hooked ends to hook
the stationary element from the back side, and pull
the element and O-ring from the seal bore in the
pump casing.
Pump Casing Removal
If the oil seal (43), housing gasket (42), or O-ring
(40) require replacement, or if the gearbox is to be
disassembled, remove the nuts (39) and slide the
pump casing off the shaft. Remove the housing
gasket and O-ring.
Remove the bearing shims (41). Tie and tag the
shims, or measure and record their thickness for
ease of reassembly.
Place the pump casing (1) on a clean surface with
the suction head opening facing up and use a
screwdriver or other suitable tool to press the oil
seal (43) from the pump casing.
If no further disassembly is required, proceed with
PUMP AND SEAL REASSEMBLY. If the gearbox
requires disassembly, do not reassemble the
pump components at this time. Refer to GEAR-
BOX DISASSEMBLY and GEARBOX REAS-
SEMBLY, followed by PUMP AND SEAL REAS-
SEMBLY.
PUMP AND SEAL REASSEMBLY
If the gearbox requires disassembly, refer to
GEARBOX DISASSEMBLY and GEARBOX
REASSEMBLY, followed by PUMP AND SEAL
REASSEMBLY.
Pump Casing Installation
Position the oil seal (43) in the casing bore with the
lip positioned as shown in Figure 1. Press the oil
seal into the bore until fully seated against the bore
shoulder.