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Cleaning - TM-5-4320-234-340088
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TM-5-4320-234-34 Pump Centrifugal Self-Priming Gasoline Engine Driven Wheel Mounted 6-Inch 1500 GPM Capacity At 60 Foot Head Manual
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Figure 5-1. Centrifugal pump, exploded view.
TM 5-4320-234-34
CHAPTER 5
REPAIR OF CENTRIFUGAL PUMP ASSEMBLY
5-1. Description
c. Repair consists primarily of replacing the shaft
a. The centrifugal pump assembly consists of the
seal and other damaged parts.  Overhaul consists of
pump, bearing housing, and flexible coupling.  The
complete teardown to allow inspection and, if necessary,
centrifugal pump is driven by the engine through a
replacement of all operating parts, including bearings,
coupling which is secured to the impeller shaft.  The
impeller, and wear plate. Repair can be done without
impeller shaft is ball bearing mounted in the bearing
removal of the entire pump assembly from the engine
housing.  The impeller shaft extends into the pump
and chassis. Overhaul requires removal of the unit to a
housing which is bolted to the bearing housing.  The
workbench.
open-type impeller is keyed to this end of the shaft so
that it rotates with the shaft.
5-2. Shaft Seal Replacement
b. The impeller is enclosed in a close-fitting volute
Replace a leaking shaft seal as follows:
to provide efficient operation.  The pump housing
a. Remove the drain plug (1, fig. 5-1), and drain all
provides the suction and discharge ports.  The pump
fluid from the pump body.
housing has a replaceable wear plate. This wear plate
is subjected to most of the internal pump wear.
5-1

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