|
| |
TM 10-4320-343-14
5.6.2 Impeller Replacement.
This task covers:
5.6.2.1 Removal
5 .6 . 2 . 2 I n s t a l l a t i on
INITIAL SETUP
Tools
General Mechanic’s Tool Kit (appendix B,
Section III, Item 1)
Caliper Vernier (appendix B,
Section III, Item 3)
Two 3 1/2 inch (76.2 mm) long screws
(appendix E, Section II, Item 15)
Torque wrench 0-175 ft lbs (appendix B,
Section III, Item 3)
Two steel bars,
1 1/4 inch (31.75mm) x
3/8 inch (9.525mm) x 14 inches
(355.6mm)
Material/Parts
Gasket (TM 10-4320-343-24P)
Lockwashers (TM 10-4320-343-24P)
Seals (TM 10-4320-343-24P)
Oil (appendix E, Section II, Item 8)
Equipment Conditions
Equipment shut down, refer to
paragraph 2.5.1.2 or 2.5.2.2.
Pump assembly removed,
paragraph 5.6.1.
General Instructions
Do not work on equipment without
following standard shop safety
precautions.
5.6.2.1 Removal.
a .
b .
c .
d.
e .
f .
g.
Scribe a mark on intermediate housing (figure 5-12,
1) and volute housing (2).
Remove nuts (3), lockwashers (4),
and intermediate housing (1) from volute
housing (2) .
Remove and discard gasket (5).
Remove and retain two screws (6) and lockwashers (7) diagonally opposite each
o t h e r.
Install two 3-inch (76.2mm) long screws into threaded holes.
Place steel bar (8),
1 1/4 inch (31.75mm) x 3/8 inch (9.525mm) x 14 inches
(355.6mm), between screws as shown in figure 5-21 view A.
Place a second steel bar (9) into impeller between vanes as shown.
Ensure that steel bar (9) is held rigid while striking with hammer. Impeller
is made of brass and damage to vanes may occur.
Failure to obey this
caution may cause damage to impeller.
h.
While holding steel bar (8) at coupling securely in position, and steel
bar (9) at impeller end rigid,
firmly strike steel bar (9) at impeller end in
counterclockwise direction while facing impeller (10) until impeller breaks
loose from shaft.
i .
Remove impeller (10),
holding bar (8) and striking bar (9).
j .
Remove spacer shims (11),
spring centering washer (12), and spring (13) from
s h a f t .
5-34
|
