PA SERIES PUMPS
MR−05861
MAINTENANCE & REPAIR
PAGE C − 10
piping must be removed from the pump
before lifting. If chains or cables are
used to lift pump components, make
certain that they are positioned so as
not to damage the pump, and so that the
load will be balanced.
Use
only
replacement parts provided or
approved by Gorman-Rupp. Use of non-
authorized parts may result in damage to
the equipment and/or injury to personnel
and
will
invalidate the warranty.
Air Compressor Drive Belt Tensioning For
Deutz Engine Driven Models
Air compressor drive belts used on Deutz
engine driven models must be properly
adjusted to prevent damage to the engine
stub shaft. If adjustment is required, limit
tension to no more than 3/16 inch of deflec-
tion at 6 lbs. of pressure applied midway
between pulleys.
Priming Chamber Removal And Disassembly
(Figure C−1)
Disconnect both the suction piping and the air dis-
charge tubing from the priming chamber assem-
bly. Support the priming chamber assembly (10)
using a sling and a suitable lifting device. Remove
the attaching hardware and separate the priming
chamber assembly, baffle and gasket from the
hopper spool (5).
(Figure C−4)
Remove the hardware (3 and 4) securing the prim-
ing valve (1) to the priming chamber (6). Carefully
lift the valve components from the priming cham-
ber. Remove the gasket (7) and clean the mating
surfaces.
If the priming valve float is stuck or the strainer (5) is
clogged, it can usually be cleaned without further
disassembly.
The only serviceable part of the priming valve is the
orifice button (2). If liquid continues to bypass
through the priming chamber after adjusting the
orifice button (see
Priming Chamber Reassemb-
ly and Installation
for adjustment), the button may
require replacement. To replace the orifice button,
remove one of the e-clips" from the pivot pin clos-
est to the orifice button and remove the pivot pin.
This will allow the linkage to be raised high enough
to access the orifice button.
Remove the hex nut and lockwasher securing the
orifice button to the linkage bar and unscrew the
orifice button from the linkage bar.
Discharge Check Valve Removal and
Disassembly
(Figure C−1)
Support the discharge check valve assembly (5)
using a sling and a suitable lifting device. Remove
the hardware (6 and 7) and separate the discharge
check valve assembly and gasket (8) from the
pump assembly (1).
The flapper and gasket are the only serviceable
parts of the check valve. If the flapper requires re-
placement, remove the hardware securing the
cover and gasket. Separate the valve cap and re-
move the flapper.
Pump Casing And Wear Plate Removal
(Figure C−2)
Support the pump casing using a suitable hoist
and sling.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam-
age to equipment. If slings or chains are
used to move the pump or components,
make sure that the load is balanced;
otherwise serious personal injury or
