Gorman-Rupp Pumps 03H1-GX390 1178614 and up - Manual (Page 24)

0 SERIES OM-04728
MAINTENANCE & REPAIR PAGE E - 6
PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de­
cals attached to the pump.
This pump requires little service due to its rugged,
minimum‐maintenance design. However, if it be­
comes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the sectional views (see Figures 1 and 2) and the
accompanying parts lists.
This manual will alert personnel to known proce­
dures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance per­
sonnel to ensure that only safe, established main­
tenance procedures are used, and that any proce­
dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac­
tices.
For engine disassembly and repair, consult the lit­
erature supplied with the engine, or contact your
local engine representative.
Most service functions, such as impeller, wear ring,
and seal replacement, may be performed by drain­
ing the pump and removing the pump casing. The
following instructions assume complete disassem­
bly is required.
Before attempting to service the pump, shut down
the engine and disconnect the spark plug wire to
ensure that it will remain inoperative. Close all
valves in the suction and discharge lines.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man­
ual.
2. Shut down the engine and discon­
nect the spark plug wire to ensure
that the pump will remain inopera­
tive.
3. Allow the pump to cool if over­
heated.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau­
tiously.
7. Drain the pump.
Pump Disassembly
(Figure 2)
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.
Close all valves in the suction and discharge lines.
Remove the pump casing drain plug (23) and drain
the pump. Move the pump to a clean, well‐
equipped shop for maintenance and repair.
(Figure 1)
Remove the hardware (14, 15, 16 and 17) securing
the pump (1) to the rollover base (4). Tie and tag
any leveling shims used under the casing mount­
ing feet to ease reassembly.
Pump Casing and Wear Ring Removal
(Figure 2)
To service the impeller, wear ring or seal assembly,
the pump casing (1) must be separated from the
intermediate (20).