AC 115 VAC, 400 Hz Section (Page 2-5) Add the following to the Function column:
On the 83-360D, the AC % LOAD readings are not
0 to 150% scale.
AC % LOAD
correct. A label "MAX. CONT. 130%" has been
Green band below
applied below this gage to indicate the continuous
100% and yellow
AC output power rating of the upgraded units.
band above 100%
On the 83-360D, the AC current limit selections
Rotary switch with
are: 17 KVA, 38 KVA, 59 KVA (AH-64A/H-60),
four AC positions
and 90 KVA (AH-64D)
(10 KW, 20 KW, 30
KW, and 45 KW)
When the CURRENT LIMIT SELECTOR switch is
set at 45KW and 1000 AMP on the 83-360A, or
AH-64D/90 KVA on the 83-360D this switch also
opens a surge control valve to increase available
2-3. PLACING THE AGPU IN OPERATION, 83-360D.
c. Engine Start Procedures. (Page 2-21)
(3) Add Note as follows:
On the 83-360D, the DC voltage monitoring function of the GCU has been disabled.
The DC VOLTAGE FAULT will not illuminate when the PRESS TO TEST button is
2-4. AC MODE OPERATION, 83-360D.
b. AC Power Application. (Page 2-23)
(1) Add Note:
The 83-360D has been modified specifically to meet the combined AC, hydraulic,
and pneumatic servicing requirements of the AH-64D. When the CURRENT
LIMIT SELECTOR switch is set to AH-64D, the maximum AC current is
available to handle transient power requirements. Since the surge control valve
remains open even with the pneumatic system switch is ON, this setting should
not be used when air output is required.
(2) Add: On the 83-360D, set CURRENT LIMIT SELECTOR switch (1, figure 2-10) to
the type aircraft to be supported or desired current limit.