INSTALLATION - TM-3-4240-284-20-P0094

TM 3-4240-284-20&P

2-14. M56 GAS-PARTICULATE FILTER UNIT - MAINTENANCE INSTRUCTIONS (CONT).

ACTION

ITEM

LOCATION

INSTALLATION

Place gas filter (12) in filter housing (8), either end first.

Gas filter

M56 Gas-Particulate Filter

Unit

Position access cover (6) on filter housing, aline guide

pin with guide hole (15). Push access cover (6)

into place.

NOTE

To prevent binding of outer access cover

against filter housing rim, screws must be

tightened alternately, in a criss-

cross pattern.

Install washers (11), aluminum washers (10), and

screws (9) finger tight.

WARNING

Filter seals must be properly seated to

prevent bypass of contaminated air.

CAUTION

Be sure to observe torque values for the

torque wrench being used.

Preliminary torque. In a crisscross pattern, torque

screws to 8-10 foot-pounds (100-125 inch-pounds).

Final torque. In a crisscross pattern, torque screws to

Particulate filter

15-16 foot-pounds (180-200 inch-pounds).

Place particulate filter (7) in gas filter (16), either end

first.

Grasp inner cover by the handles and place it in the

access cover (6).

Swing retaining bar (4) up across inner cover and

engage end of bar with catch (3).

WARNING

Filter seals must be properly seated to

prevent bypass of contaminated air.

Tighten screw (2) until sleeve (17) is flush with top

surface (A) of retaining bar (4).

2-72