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 TM 55-1905-223-24-18-2
(6) Remove cover (13).
(7) Remove expansion plug (15). Use hammer and punch to knock plug out of cover.
(8) Remove roll pin (12).
(9) Remove performed packing (11) and sleeve bearing (10).
(10) Remove pump rotor (9).
(11) Remove shaft and pinion assembly (8).
b. Relief Valve Assembly.
(1) Remove locknut (16), gasket screw (17) and bonnet (18) from adjusting screw (19).
(2) Remove retaining ring (20).
(3) Remove performed packing (21).
(4) Remove adjusting screw (19), spring (21) and poppet (25).
(5) Remove retaining ring (29).
(6) Remove cage (28) from casing.
(7) Remove performed packings (24 and 27).
(8) Remove pipe plugs (22) and (26) from casing.
REPAIR
Repair of rotary pump unit consists of replacing performed packing (3, 11, 21, 24, 27), shaft seal assembly (4),
sleeve bearings (6, 10), expansion plug (15), pump rotor (9), shaft and pinion assembly (8), and gasket screw
(17).
ASSEMBLY
a. Relief Valve Assembly.
(1) Install pipe plugs (22, 26) on casing (7).
(2) Install performed packings (24 and 27).
(3) Install cage (28) on casing.
(4) Install retaining ring (29).
(5) Install poppet (25), spring (21) and adjusting screw (19).
(6) Install performed packing (21).
3-400
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