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 TM 5-5420-279-23
Item #
Relay
Circuit
24
KA 1
Launcher solenoid supply 5A
22
KA 2
Crane power supply 20A
24
KA 3
Tail lift supply 7.5A
24
KA 4
Bridge deployment solenoid supply 15A
23
KA 5a
PTO manual override 5A
23
KA 5b
PTO manual override latch
23
KA 6
PTO select 5A
12
KA 7
E-Stop override relay
10
KA 8
Chest pack E-Stop override relay
23
KA 10
Neutral applied 12V from cab
23
KA 11
Brake applied 12V from cab
23
KA 12
Neutral lockup enable
18
KM 1
Safety relay supply contactor
14
KM 2
Safety relay supply contactor
13
SR 1
E-Stop safety relay
27
D1
6
F1
Surge supressor
a.
Remove
(1)
Open the cover (2) of the interface enclosure (1).
(2)
Remove the sixteen screws and washers (3) securing the operator's panel (4) to the
interface enclosure (1).
(3)
Remove to one side, and support, the operator's panel (4).
(4)
Remove the cable ties securing the two harnesses and twelve plugs to the operator's panel
(4).
(5)
Using a suitable marker, mark the twelve plugs and their positions on the operator's panel
(4).
(6)
Remove the operator's front panel (4).
NOTE
Relays KA1, KA3, KA4, KA5a, KA5b, KA6, KA10, KA11,AND KA12 are a plug in type relay.
(7)
Note the position of the relay to be removed (23 or 24) and pull it from its holder.
(8)
KA2 (22). Note the position of and release the two cables (20) by turning the two screws
counter-clockwise.
(9)
Remove the two screws and washers (21) securing relay KA2 (22) to the interface
enclosure (1).
5-329
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