Mooney M20TN, Service And Maintenance Manual

Page: 392 / 1169

MOONEY AVIATION COMPANY, INC.
M20TN SERVICE & MAINTENANCE MANUAL
Date
2006
Rev Date
Page 16
the ELT and unplug the flex--cable connected to the
pack. Do not pull on the flexible portion of the cable --
use the rigid section of the flex circuit at the connector
as a handle. Inspect the battery pack and ELT chassis.
The battery cells, components and connectors should
be free of corrosion. Inspect flex--circuit for broken con-
nections or damage. Ensure the battery housing is free
of cracks or other visible damage. Verify the battery ex-
piration date. If the battery pack has not expired it may
be reinstalled. The battery pack must be replaced with
a new one:
°
After use in an emergency.
°
When the transmitter has been in use for more than 1
cumulative hour; (7 flash error).
°
After an inadvertent activation of unknown duration.
°
On or before the battery replacement (expiration) date
SCREWS
COVER
BATTERY
PACK
MOUNTING
GASKET
BATTERY REPLACEMENT (ELT - ARTEX ME--406)
FIGURE 39--19
Battery pack replacement.
If replacing the battery pack, order replacement kit
455--0012 which contains the battery pack (452--6499)
(ME406 Series LiMnO2 Battery Pack), replacement
gasket, hardware and labels (for Log Book and Battery
Pack). Lay the battery pack on the work surface with the
batteries facing up. Install a replacement seal in the slot
along the perimeter of the housing. Leaving the battery
as it is, position the ELT over the battery pack with one
hand and plug the flex--cable connector into the battery
assembly using the other. The cable should not be
twisted and the connector should “click” into place.
NOTE:
The battery connector is keyed to prevent
incorrect installation.
NOTE:
Mate the ELT to the battery, making sure that the
seal is positioned correctly during the process.
Replace the 8 securing screws and torque to
10 -- 12 inch--lbs. Enter pertinent battery
replacement information in the aircraft log book
and fill out any other documentation required by
local authority.
Refer to Artex “Description, Operation, Installation and
Maintenance Manual for ME406 ELT” for detailed
Maintenance and Troubleshooting information.
39--12--03 -- INSTRUMENT/RADIO LIGHT & GLA-
RESHIELD DIMMER CONTROL
Dimmer controls for instrument, radio and glareshield
lights consists of two rheostat switches located on low-
er right portion of instrument panel. Rotate either switch
to obtain desired light intensity. Test malfunction of ei-
ther switch with a multi--meter; replace as needed.
39--12--04 -- ACCESSORY SOCKET (14 VOLTS)
The 14V Accessory Socket is located at bottom of Ra-
dio Panel immediately to right of co--pilots control col-
umn shaft.
39--20--00 -- ELECTRICAL/ELECTRONIC EQUIP-
MENT RACK
The electrical equipment rack for the M20TN aircraft is
located in tailcone just aft of baggage compartment
bulkhead. Access is gained through large access door
in tailcone aft of left wing trailing edge. The batteries,
auxiliary power plug receptacle (if installed), and vari-
ous avionics black boxes are mounted on electrical
equipment rack. The ELT is mounted on an accessory
rack further aft in tailcone.
39--21--00 -- MISCELLANEOUS MAINTENANCE
39--21--01 -- EQUIPMENT MAINTENANCE
Refer to SECTION 27--42--00 for Electric Trim System
Maintenance.
39--12--02
AUGUST 2010