Gorman-Rupp Pumps 04B3-F4L 1242057 thru 1316965 - Manual (Page 28)

OM--01216 0 SERIES
MAINTENANCE & REPAIR PAGE E -- 7
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, 2 and 3) and the
accompanying parts lists.
As described on the following pages, this manual
will alert personnel to known procedures which re-
quire special attention, to those which could dam-
age equipment, and to those which could be dan-
gerous to personnel. However, this manual cannot
possibly anticipate and provide detailed precau-
tions for every situation that might occur during
maintenance of the unit. Therefore, it is the respon-
sibility of the owner/maintenance personnel to en-
sure that
only safe, established maintenance pro-
cedures are used, and that any procedures not ad-
dressed in this manual are performed
only after es-
tablishing that neither personal safety nor pump in-
tegrity are compromised by such practices.
Before attempting to service the pump, switch off
the engine ignition and disconnect the positive bat-
tery cable to ensure that the pump will remain inop-
erative. Close all valves in the suction and dis-
charge lines.
For engine disassembly and repair, consult the lit-
erature supplied with the engine, or contact your
local engine representative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Switch off the engine ignition and
disconnect the positive battery
cable 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.
Pump Disassembly
(Figure 2)
Before attempting to service the pump, remove the
pump casing drain plug (34) and drain the pump.
Clean and reinstall the drain plug.
To service the wear ring (7), impeller (2), seal as-
sembly (3), or seal plate (29), the pump casing (1)
must be separated from the base and intermediate
(25).
Remove the suction and discharge lines. See Fig-
ure 1, and remove the hardware (46, 47 and 48) se-
curing the casing to the base (45). Remove the
nuts (28) and use a suitable hoist and sling to sepa-
rate the pump casing and gasket (30) from the seal
plate and intermediate.
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.
Tie and tag any leveling shims used under the cas-
ing feet to ease reassembly.
Inspect the wear ring (7) for excessive wear or
scoring. The wear ring is secured in the pump cas-
ing by a press fit. If replacement is required, use a
small bit to drill two holes through the ring horizon-
tally, 180_ apart. Use a saw or chisel to complete
the cuts through the ring, and remove it from the
pump casing.
Use caution not to damage the
pump casing bore when removing the wear ring.