Gorman-Rupp Pumps 04E1-GHH 1076270 and up - Manual (Page 35)

0 SERIES OM−03688
MAINTENANCE & REPAIR PAGE E − 10
PUMP AND SEAL DISASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
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.
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 (Figures 1, 2 and 2A) and the
accompanying parts list.
Most service functions, such as wear ring, impeller,
and seal replacement, may be performed by drain-
ing the pump and removing the suction head.
However, due to the confined mounting location of
the pump, it is recommended that the pump be re-
moved from the vehicle for service. The following
instructions assume complete disassembly is re-
quired.
If the gearbox requires repair, proceed with PUMP
AND SEAL DISASSEMBLY, followed by GEAR-
BOX DISASSEMBLY.
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,switch off
the engine ignition and remove the key ensure that
it will remain inoperative. Close all valves in the suc-
tion and discharge lines.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Switch off the engine ignition and
remove the key 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.
After the vehicle is positioned for pump
maintenance, block the wheels and set
the emergency brake before attempting
to disconnect the drive shaft or remove
the pump. Be sure the pump is properly
reinstalled and secure before opera-
tion.
Unless otherwise specified, the instructions in this
section are keyed to Figure 1 and the accompany-
ing parts list.
Removing Pump and Gearbox
Due to the confined mounting location of the
pump, it is recommended that the pump be re-
moved from the vehicle for service.
Due to the confined mounting location,