Installing the EPU

TM 9-1270-219-13&P

f. Disconnect pitot and static lines from EPU.

4-8. Installing the LAI.

Disconnect fittings and clamps, as necessary, and remove

pitot and static lines.

a. Connect the aircraft electrical c o n n e c t o r

8A3J1

to the LAI.

4-6. Installing the EPU.

a. Secure the EPU to the helicopter bulkhead with

four screws (1, fig. 4-2) and washers (2).

Connect

the

helicopter

electrical

connector

18A1J1 (3) to the EPU.

Ensure that screws are not dropped in the

cockpit. Loose articles are a potential

c. Connect helicopter pitot plumbing (5) to the EPU

hazard to helicopter safety.

P T pneumatic union connector.

b. Fit LAI into Pilots Instrument Panel (fig. 4-3)

d. Connect helicopter static plumbing (4) to the

and secure with four screws.

PS p n e u m a t i c u n i o n c o n n e c t o r .

EPU

4-9. Removing the LAI.

e. Perform leak tests as specified in paragraph

4-13.

4-7. Removing the EPU.

Ensure that screws are not dropped in the

a . D i s c o n n e c t t h e h e l i c o p t e r p i t o t ( PT )

pneumatic

cockpit. Loose articles are a potential

union connector (5, fig 4-2) from the EPU.

hazard to helicopter safety.

b . Disconnect the helicopter static (P S )

pneumatic

union connector (4) from the EPU.

a. Remove four screws securing LAI to Pilots

Instrument Panel (fig. 4-3).

Disconnect

the

electrical

connector

18A1J1

(3)

from the EPU.

b . Pull the LAI clear of the Pilots Instrument Panel

d. Remove the four screws (1) and washers (2)

and

disconnect

the

electrical

connector

18A3J1

from

the

securing the EPU to the helicopter bulkhead.

LAI.

4-4