Gorman-Rupp Pumps 03H1-GR 287634 and up - Manual (Page 26)

0 SERIES OM-01194
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 view (see Figures 1 and 2) and the ac­
companying parts list.
Because pump installations are seldom identical,
this manual cannot possibly provide detailed in­
structions and precautions for every aspect of
each specific application. Therefore, it is the re­
sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com­
promised by the installation. Pumps and related
equipment must be installed and operated ac­
cording to all national, local and industry stan­
dards.
Most service functions, such as impeller, wear ring,
and seal replacement, may be performed by drain­
ing the pump and removing the pump casing.
However, due to the confined mounting location of
the pump, it is recommended that the pump and
gearbox be removed from the vehicle for service.
The following instructions assume complete disas­
sembly is required.
If the gearbox requires repair, proceed with PUMP
AND SEAL DISASSEMBLY, followed by GEAR­
BOX DISASSEMBLY.
Before attempting to service the pump, switch off
the engine ignition and remove the key, or take oth­
er safety precautions to ensure that it will remain
inoperative. Close all valves in the suction and dis­
charge lines.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man­
ual.
2. Switch off the vehicle ignition and
remove the key, or take other pre­
cautions 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 secured before opera­
tion.
Removing Pump and Gearbox
Due to the confined mounting location, it is recom­
mended that the pump and gearbox be removed
from the vehicle for service.
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.
Due to the confined mounting location,
specialized equipment such as a transmis­