GORMAN-RUPP 03H1-GR, Инструкция по установке, эксплуатации и обслуживанию

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OM-01194 0 SERIES
MAINTENANCE & REPAIR PAGE E - 7
moved from the pump before lifting. Lift
the pump or component only as high as
necessary and keep personnel away
from suspended objects.
The pump assembly can be seriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Due to the confined mounting location,
specialized equipment such as a transmis­
sion jack with custom brackets should be
used to lift and position the pump and
gearbox.
Removing Pump and Gearbox
Due to the confined mounting location, it is recom­
mended that the pump and gearbox be removed
from the vehicle for service.
The pump assembly can be seriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Due to the confined mounting location,
specialized equipment such as a transmis­
sion jack with custom brackets should be
used to lift and position the pump and
gearbox.
Close all valves in the suction and discharge lines.
Remove the pump casing drain plug (23) and drain
the pump.
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.
Pump Casing and Wear Ring Removal
(Figure 1)
To service the impeller, wear ring or seal assembly,
the pump casing (1) must be separated from the
seal plate (27, Figure 2).
Remove the nuts (13) and separate the pump cas­
ing and casing gasket set (11) from the seal plate.
Tie and tag the gaskets, or measure and record
their thickness for ease of reassembly.
Clean the mating surfaces of the seal plate and
pump casing. Inspect the wear ring (24) for exces­
sive wear or scoring. The wear ring is secured in
the pump casing by a press fit. If replacement is re­
quired, use a small bit to drill two holes through the
ring horizontally, 180
_
apart. Use a saw and chisel
to complete the cuts through the ring, and remove
it from the casing.
Use caution not to damage the
pump casing when removing the ring.
Impeller Removal
(Figure 1)
To loosen the impeller screw (21), immobilize the
drive shaft (14, Figure 2). Remove the impeller
screw, lockwasher (22), and impeller washer (19).
Use a suitable puller to remove the impeller from
the shaft. Retain the impeller key (20). Use caution
when removing the impeller; tension on the seal
spring will be released as the impeller is removed.
NOTE
An alternate method of removing the impeller is to
use two large screwdrivers on opposite sides be­
tween the impeller and seal plate to pry the impeller
off the shaft.
Use caution
not to damage the impel­
ler.
Inspect the seal guard (15) for excessive wear or
scoring. The seal guard is secured on the impeller
by a press fit. If replacement is required, pull it off
the impeller.
Seal Removal and Disassembly
(Figure 1)
Carefully remove the seal spring. Remove the shaft
sleeve (16) and rotating portion of the seal as a
unit. Apply oil to the sleeve and work it up under the
bellows. Slide the rotating portion of the seal off the
sleeve.