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 TM 5-1940-277-20
TM 1940-20/2
2.
Using screwdriver disassemble pump rear cover (1) from pump body (2) by removing eight nuts (3) and screws (4).
Remove top cover (5) from pump body (2).
3.
Remove cover seal (6) from top cover (5). Discard cover seal (6).
4.
Using screwdriver remove four screws (7 and 8) and outlet valve (9) from pump body (2). Discard outlet valve (9).
5.
Slide inlet valve (10) out of position and discard.
6.
7.
Using wrench remove rocker arm nut (11) from rocker arm (12) located on pump rear cover (1).
Remove diaphragm plates (13) and diaphragm (14). Discard diaphragm (14).
8.
Clean and inspect rear cover (1), pump body (2) and diaphragm plates (13).
9.
INSTALL:
Install diaphragm plates (13) and new diaphragm (14) on rocker arm (12).
1.
Install rocker arm nut (11) on rocker arm and tighten using wrench.
2.
Install new inlet valve (10).
3.
4.
Install new outlet valve (9) and four screws (7 and 8) and tighten using screwdriver.
Install new cover seal (6) and top cover (5) on pump body (2).
5.
Assemble pump rear cover (1) and pump body (2). Insure alinement of inlet and outlet fittings.
6.
Aline holes in diaphragm (14) with holes in rear cover (1) and pump body (2).
7.
Insert eight screws (4) thru pump body (2), diaphragm (14) and rear cover (1).
8.
Install eight nuts (3) and tighten using screwdriver.
9.
Install hand bilge pump assembly (refer to paragraph 3-146).
10.
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