TM-3-1040-279-12-P

GENERATOR SET, SMOKE, MECHANICAL: PULSE JET, M157 W/120 GAL FOG OIL TANK AND W/80 GAL FOG OIL TANK

TECHNICAL MANUAL; OPERATOR’S AND ORGANIZATIONAL MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST AND DEPOT MAINTENANCE REPAIR PARTS

MAY 1987

TM-3-1040-279-12-P - Page 174 of 389

TM 3-1040-279-12&P

4-27 PULSE JET ENGINE ASSEMBLY (CONT).

c.

Engine

Head

Assembly.

WARNING

Engine and engine head may become very hot during operation. Do not

touch engine or engine head with bare hand. Allow sufficient time for cooling

after operation.

REMOVAL

1.

Loosen but do not remove clamp nut (1) on clamp (2).

2.

Open clamp (2) by lifting catch (3) and remove clamp (2).

3.

Remove nozzle assembly (4) from engine head (5).

4.

Rotate engine head (5) counterclockwise and remove.

5.

Replace gasket (6) as required.

INSTALLATION

CAUTION

Do not overtighten engine head. Over-tightening can cause severe damage to

head gasket, engine head and combustion chamber flanges.

1.

Install engine head (5) with gasket (6) in pulse jet engine (7).

2.

Rotate engine head clockwise until secure.

3.

Position nozzle assembly (4) on engine head (5).

4.

Install clamp (2) on nozzle assembly (4) and engine head (5).

5.

Close catch (3) and secure with clamp nut (1).

4-108

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