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 216 of 389

TM 3-1040-279-12&P

4-34 FOG OIL PUMP.

This task covers replacement of Gear Rotor Set.

INITIAL SETUP

Tools

General Mechanic’s Automotive Tool Kit

SC 5180-90-CL-N26

Equipment Condition

General Safety Instructions

Fog oil is very slippery. Clean up all spills

immediately to prevent injury to personnel.

Fog oil pump removed from fog oil pump

assembly (P. 4-142).

REMOVAL

1.

2.

NOTE

Scribe mark on mechanical housing and inside wall of pump motor housing

before removal.

Remove four screws (1) securing mechanical housing (2).

Carefully tap mechanical housing end of pump (3) on a block of wood and remove mechanical

housing (2).

3.

4.

5.

6.

Remove gear rotor set (4) from pump (3).

Remove woodruff key (5) from motor shaft (6), if being replaced.

Inspect gear rotor set (4) for free movement, pitting, and corrosion. Clean/replace gear rotor set as

required. Do not use file or abrasive cleaners.

Clean pump motor housing (7).

7.

Inspect preformed packing (8) and replace as required.

INSTALLATION

1.

Install woodruff key (5) in motor shaft (6), if removed.

2.

Lightly oil gear rotor set and install gear rotor set (4) on motor shaft (6) using square slot on rotor.

NOTE

Aline scribe marks on mechanical housing and inside wall of pump motor

housing.

3.

Install mechanical housing (2) and secure with four screws (1).

4-148

Change 4