Gorman-Rupp Pumps 04E1-GHH 1076270 and up - Manual (Page 20)

OM−03688 0 SERIES
OPERATION PAGE C − 2
STARTING
Consult the operations manual furnished with the
vehicle.
Rotation
The correct direction of pump rotation is clockwise
when facing the gearbox input shaft. The pump
could be damaged and performance adversely af-
fected by incorrect rotation. If pump performance
is not within the specified limits (see the curve on
page E-1), check the direction of rotation before
further troubleshooting.
Only operate the input shaft in a clockwise
direction when facing the input shaft.
Otherwise, pump performance will be ad-
versely affected, and the pump and/or
gearbox could be seriously damaged.
Drive
The pump and gearbox assembly are designed to
be mounted midship between the chassis frame
members. The gearbox split shaft replaces a part
of the vehicle drive shaft connecting the transmis-
sion to the rear axle.
The gearbox assembly has a ratio of 2.56:1, and is
designed for operation at a maximum input speed
of 1950 RPM. Do not operate at a higher input
speed.
The gearbox provided on this pump is
designed for operation at a maximum in-
put speed of 1950 RPM. If operated at a
higher RPM, pump or gearbox compo-
nents may be destroyed.
OPERATION
Do not operate the pump against a
closed discharge valve for long periods
of time. If operated against a closed dis-
charge valve, pump components will
deteriorate, and the liquid could come
to a boil, build pressure, and cause the
pump casing to rupture or explode.
The split drive shaft of the pump gearbox provides
for selective operation of either the pump or the ve-
hicle; both cannot be operated at the same time.
Operating Controls
Since Gorman-Rupp has no control over the actual
installation, it is the obligation of the tank builder or
the installer to devise controls to safely operate the
pump from inside the cab, or from a remote control
panel. All instructions and operational procedures
for the pump and system must be provided to the
pump operator.
Decals and tags vital to pump operation
were shipped loose with the pump.
These decals must be affixed in a promi-
nent place visible to the pump operator.
The shift mode indicator must be visible to the op-
erator.
Shifting Sequence
In shifting to vehicle operation, the air shift rod link-
age is activated to engage the output shaft and
provide direct drive (1:1 ratio) through the gearbox
to the rear axle of the vehicle.
In shifting to pump operation, activate the air shifter
to disengage the gearbox drive output shaft, and to
engage the drive input shaft to the gear train which
operates the pump. Never shift from drive" to
pump" unless the vehicle is completely stopped.