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TM-5-4320-242-14 Pump Assembly Flammable Liquid; Bulk Transfer; Gasoline Engine Driven; 350-GPM Capacity at 190 Foot Head; Wheel Mounted Manual
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Intermediate Housing
CHAPTER 6
REPAIR OF PUMP ASSEMBLY
Section I. PUMP ASSEMBLY COMPONENTS
6-1. General
c. Insert a piece of wood between any two ribs of
This section contains repair instructions for those items
the impeller (17) and strike the wood with a mallet in
which  are  considered  components  of  the  pump
such a manner as to turn the trailing edge of the
assembly.
impeller blades counterclockwise.  This will break the
contact between the thread in the impeller and the
6-2. Pump Assembly
thread of the impeller shaft (29).
a. Remove the pump assembly (para 5-6).
NOTE
b. Remove the eight nuts (37, fig. 6-1) securing
The impeller shall be dynamically
the volute casing (49) to the intermediate housing (35).
balanced  to  a  maximum  out-of-
Remove the volute casing from the intermediate
balance condition of 0.25 inch-ounce
housing. Remove the volute gasket (21).
at 3600 RPM.
NOTE
d. Unscrew and remove the impeller (17), the
On Model US36ACG, lockwashers are
spacer shims (18), and the shaft sleeve (23) with the
used with the eight nuts (37) and
seal rotary elements (19) from the impeller shaft (29).
washer (36) that secure the volute
CAUTION
casing  (49)  to  the  intermediate
housing (35).
If the original impeller (17) shaft
sleeve  (23)  seal  plate  (22)  and
CAUTION
impeller shaft (29) are to be used on
Carefully maintain alignment when
reassembly,  use  of  the  original
separating the volute casing (49)
spacer  shims  (18)  in  the  same
from the intermediate housing (35).
quantity and thickness will assure
Damage to the impeller will result in
proper
impeller
spacing
at
the volute casing is allowed to sway
reassembly.
or turn during removal.
6-1

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