Replace supply and return lines.

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REPLACEMENT

TM-55-1905-223-24-1 Main Propulsion Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

Replace/Repair Shutdown Valve Group

TM 55-1905-223-24-1

Replace engine coolant heater (44).

(1) Position engine heater cooler (44) on engine heater bracket (39).

(2) Install four hexagon nuts (40), lockwashers (42), washers (41) and machine bolts (34). Secure until

tight.

(3) Connect electrical wiring remove tags.

d. Replace supply and return lines.

(1) Position corner brace (7). Secure with lockwasher (10) and hexagon head capscrew (11).

(2) Position loop clamp (6). Secure with hexagon nut (4), flat washer (5), lockwasher (8), and

hexagon head capscrew (9).

(3) Connect pipe nipples (13 and 14), tube-to-hose tee (12), hose elbows (15 and 49) and pipe-to-hose

straight adapters (3, 21, 43, 51, 56, 58) as required.

(4) Install hose clamps (2, 53, 55, 60-left bank or 15, 19, 46, 48-right bank), nonmetallic hoses (1, 50,

52, 59-left bank or 17, 20 45, 57-right bank), and metallic bent tubes (54 and 61-left bank or 18 and

47-right bank).

(5) Secure hose clamps until tight.

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