Gorman-Rupp Pumps 86A2-F3L 1257390 thru 1330588 - Manual (Page 28)

OM--00955 80 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 Deutz 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.
Suction Check Valve Removal
(Figure 2)
Before attempting to service the pump, remove the
pump casing drain plug (42) and drain the pump.
Clean and reinstall the drain plug.
For access to the check valve, remove the suction
piping. Remove the nuts (46) and separate the
suction flange and gasket (43 and 44) from the
pump casing (1). Replace the suction flange gas-
ket as required.
Disengage the machine screws (48) and pull the
check valve seat (55), gasket (56) and check valve
assembly (49) from the suction port.
Inspect the check valve parts for wear or damage.
If replacement is required, remove the hardware
(50 and 51) and separate the check valve gasket
(53) and weights (52 and 54).
Pump Casing and Wear Plate Removal
(Figure 2)
To service the impeller (2), seal assembly (3) or the
seal plate (36), the pump casing must be sepa-
rated from the base (47, Figure 1) and intermediate
(21). See Figure 1 and remove the hardware (48,
49, 50 and 51) securing the pump casing (1) to the
base.
Support the pump casing using a suitable hoist
and sling, and disengage the hardware (35) secur-
ing the pump casing to the seal plate (36) and inter-
mediate (21). Separate the pump casing and gas-
ket set (37) from the seal plate and the intermedi-
ate. Replace the gasket set as required. For ease of
reassembly, tie and tag the gaskets or measure
and record their thickness.