Repair Heat Exchanger Group. (FIGURE 3-32)

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FIGURE 3-31. Crankcase Breather and Tube

TM-55-1905-223-24-5 Bowthruster Engine for Landing Craft Utility (LCU) NSN 1905-01-154-1191 Manual

FIGURE 3-32. Heat Exchanger Group .

TM 55-1905-223-24-5

3-17. Repair Heat Exchanger Group. (FIGURE 3-32)

This task covers:

a. Removal

b. Repair

c. Replacement

INITIAL SETUP:

Tools

Equipment Condition

Tool kit, general mechanic's,

Heat exchanger removed

rail and marine diesel engines,

Combination wrench set, metric

10mm to 24mm,

5120-01-046-4979

Material/Parts

Teflon pipe thread lubricant,

Cleaning solvent, Item 5, Appendix C

Electrode plug P/N 68241

Preformed packing P/N 3011337

Gaskets P/N 3011325

Gasket P/N 3011332

Cooler core P/N 3011327

REMOVAL

a. Remove the socket head capscrews (2) and lockwashers (3) securing end cover (1). Remove cover

(1), preformed packing (14), and gasket (4). Discard preformed packing and gasket.

b. Remove socket head capscrews (11) and lockwashers (10) securing cover (9) and remove cover (9)

and gasket (8). Discard gasket.

c. Pull cooler core (7) from housing (5). Remove gasket (6) from cooler core (7) and discard.

d. Remove six zinc plugs (15) from cover (1).

e. Remove four pipe plugs (13) from housing (5).

f. Remove pipe plug (12) from cover (9).

REPAIR

a. Clean the housing (5) and end covers (1 and 9) with cleaning solvent.

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