BFGoodrich Avionics Systems,
Inc.
Component Maintenance
Manual
P/N
501-1075-()
WARNING:
COATING
MATERIAL
FROM
RESIWELD7200
ANDDURICON3100HAVEBEEN
IDENTIFIEDAS
HAVINGA
DEGREE
OF
HAZARDIN
HEATHANDFLAMMABILITY.
CONSULT
THEAPPLICABLE
MATERIAL
SAFETY
DATA
SHEETPRIOR
TOUSEORASSOCIATIONWITHTHIS
PRODUCT.
A. Prepare coating
(BFGAS,
P/N
514-1015-01
[Resiweld
7200], P/N
514-1018-01
[Duricon
3100], or equivalent)
in
accordance with
manufacturer's
instructions on product. Prepare
only
enough
coating
to accomplish the task.
B.
Generally,
MIL-T-152B
requires or
permits the
following:
1)
Coating may
be
applied
by
spraying,
brushing,
or
dipping.
2) Unless the part may be
damaged,
the
part
should be
pre-dried
at
a temperature of
60
degrees C.
3) The
temperature of the part
to be
coated
should be
at least
5 degrees
C
above room
temperature when
the coating
is
applied.
4) All surfaces shall be
free
from dirt, oil, grease, or
other foreign matter.
5)
The
temperature
of the
coating
at
application
shall not
be lessthan room temperature.
6) Dried
coating
shall
be
0.0020
to
0.0025-inches
thick,
maximum.
Prior to using
the coated part, the
coating shall be dried until no longer
tacky
to the
touch.
5. Battery Pack
Replacement
Disassemble the Emergency
Power
Supply in
accordance
with
guidance from the Disassembly
section
and
Illustrated Parts List
section
IPL
Figure 1.
A. Remove
screws
(-15,
-20) and
Cover
Assembly
(-5).
B.
Remove
Battery
Pack
AlB2
(-35),
PS-823B,
D, F, H,
and
Support
Bracket
(-5),
PS-823A,
C,
E,
G,from
Chassis
(-220).
CAUTION: DO
NOTOVERHEAT
BATTERY
TABS
ASEXCESSHEATWILLCAUSE
CELL
DAMAGE.AHEAT
SINKSHOULDBECONNECTED
BETWEENTHECELLANDTHESOLDERJOINT
TO
PREVENT
POSSIBLEDAMAGE.
C.
When replacing Battery
Pack
AlB2
(-35),
unsolder
the two connecting
wires
from
the tabs.
Note position of
each
wire
so they
can
be
reconnected
to the
proper
tab on
the
replacement
Battery
Pack.
D. Connect
and solder
the leads (removed
in
step C)
to the
proper
tab on the
replacement
Battery
Pack
(601-3).
msmijtp202Repairdiskl59
24-20-03
Page 603
Revision
A
June 30, 1999
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