Gorman-Rupp Pumps VGH4C31-B 1379872 thru 1210169 - Manual (Page 26)

VGH SERIES OM−06126
MAINTENANCE & REPAIR PAGE E − 4
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 view (see Figure 1) and the accompa-
nying parts list.
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.
Before attempting to service the pump, disconnect
the power source or take other precautions to en-
sure that it will remain inoperative. Close all valves
in the suction and discharge lines.
For power source disassembly and repair, consult
the literature supplied with the power source, or
contact your local power source representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Lock out or disconnect the power
source to ensure that the pump will
remain inoperative.
3. Allow the pump to completely cool
if overheated.
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.
If this pump has been approved for use
with volatile and/or flammable liquids,
be certain proper safety practices are
followed before operating or servicing
the pump. Provide adequate ventilation,
prohibit smoking, wear static-resistant
clothing and shoes. Clean up all fuel
spills immediately after occurrence.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam-
age to equipment. Suction and dis-
charge hoses and piping must be re-
moved from the pump before lifting.
Pump Casing and Impeller Removal
For access to the impeller (2) or seal assembly (3),
the pump casing (1) must be separated from the
seal plate (39).
Drain the suction and discharge piping and dis-
connect them from the pump. Remove the casing
drain plug (43) and drain the pump. Clean and rein-
stall the drain plug.
Disconnect the recirculation pipe (8) at the cou-
plings (5) in the pump casing and seal flange (37).
Remove the hardware securing the pump casing
to the base. Wedge a block of wood under the
bearing housing (15) to support the housing when
the casing is removed.
Remove the hex nuts (7) and separate the pump
casing from the seal plate. Tie and tag any leveling
shims used under the casing mounting feet. Re-