Replace/Repair Thermostat Housing Group. (Figure 2.-9)

Custom Search

REPAIR

TM-55-1905-223-24-3 Ship s Service Generator for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 2-9. Thermostat Housing Group.

TM 55-1905-223-24-3

2-28. Replace/Repair Thermostat Housing Group. (Figure 2.-9)

This task covers:

a. Removal,

Repair,

Replacement.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's rail

Engine shut down and cooled below

and marine diesel engines,

120 (50 ). TM 55-1905-223-10.

Cooling system drained (Table 2-1,

Mandrel, thermostat seal P/N ST-1225

Item 24).

Mandrel, thermostat seal P/N ST-1226

Air supply secured (port).

Torque wrench kit P/N 3377216

Battery banks disconnected (starboard).

TM 55-1905-223-10.

Materials/Parts

Nonmetallic hose P/N 102522

Gaskets P/N 208128, P/N 3009457

Water outlet gasket P/N 3019158

Flow control thermostat P/N 201737

Thermostat seal P/N 186780

Preformed packing P/N 43463-A

Coolant, Item 8, Appendix C

Metal cleaning solvent, Item 6,

Wiping rag, Item 4, Appendix C

REMOVAL

WARNING

Ensure engine water temperature is below 120 (50 ) before

removing the cooling system radiator or fill cap. Failure to do so

may cause personal injury from the hot coolant spray.

a. Remove fill cap on external expansion tank to relieve cooling system pressure.

b. Drain engine cooling system. Refer to Table 2-1, Item 24.

Remove pipe plugs (19) to drain housing (12) and thermostat support (4).

d. Loosen hose clamp (23) an disconnect hose (22) from outlet connection (1).

e. Loosen hose clamps (18) and disconnect nonmetallic hose (13) from housing (12).

2-68