ELECTRIC BILGE PUMP ASSEMBLY REPAlR INSTRUCTIONS

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REMOVE

TM-5-1940-277-20 Boat Bridge Erection Twin Jet Aluminum Hull MODEL USCSBMK1 (1940-01-105-5728) MODEL USCSBMK2 (1940-01-218-9165) Manual

INSTALL

TM 5-1940-277-20

TM 1940-20/2

3-145. ELECTRIC BILGE PUMP ASSEMBLY REPAlR INSTRUCTIONS

TOOLS: Two Flat Tip Screwdriver

7/16 inch Box Wrench

Impeller Nut Removal Tool (Item D-1, Appendix D)

(Manufactured locally)

PARTS/MATERIALS: Brushes

Bilge Pump Screen

Plastic lmpeller

Gasket

REMOVE:

(MK1) Remove aft and forward electric bilge pumps (refer to paragraph 3-143).

(MK2) Remove aft electric bilge pump (refer to paragraph 3-143).

Remove forward electric bilge pump (refer to paragraph 3-144).

Inspect screen (1) for damage.

(MK1) Using impeller nut removal tool remove nut (2) and lockwasher (3).

(MK2) Using impeller nut removal tool remove nut (2), lockwasher (3) and flat washer (4).

Using two screwdrivers gently pry impeller (5) from shaft (6).

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