5 - 6 1 1 5 - 5 4 5 - 1 2
T O - 3 5 C 2 - 3 - 4 4 4 - 1
N A V F A C
P - 8 - 6 2 6 - 1 2
T M - 0 0 0 3 8 G - 1 2
(~ply 24 Vdc at pins A and B of main ac
contactor (3) connector. When main ac contactor
operates, it should create a distinctive noise.
(2) With an ohmmeter, check for continuity
between terminal Al to A2, B1 to B2, and Cl to
C2 on top of the main ac contactor.
(3) At the connector, check for continuity
b~tween pins C to D, E to F, G to H, J to K, and
R to T.
(4) At the connector, check for an open cir-
cuit between pins L to M, N to P, and R to S.
(5) Remove the 24 Vdc and check for the oppo-
site of the conditions (continuity or open circuit)
listed in steps (2), (3), and (4).
c. Replacement. See f i g u r e 3 - 2 4 and replace
themain ac contactor (3) as follows:
(a) Remove four screws ( 1 ) which secure
covers (2) on top of main ac contactor (3).
(b) Tag and remove electrical connections
to main ac contactor by removing six nuts and
washers ( 5 and 6).
(c) Remove four screws (4) which secure
main ac contactor to mounting bracket (7).
(2) Installation. See f i g u r e 3 - 2 4 and install
the main ac contactor (3) in reverse order of removal.
3 - 1 4 2 . R e p a i r o f L o a d T e r m i n a l B o a r d .
a. Inspection. See f i g u r e 3 - 2 4 and inspect the
loa~terminal board (8) for cracks, breaks, loose
terminals and other damage. Inspect all electrical
leads for broken or frayed insulation and other
~ Replacement of Load Terminal Board. See
f i g u r e
3 - 2 4 and replace the load terminal board (8) as follows:
( 1 ) Removal.
(a) Tag and remove electrical connections to
load terminal board (8).
(b) Remove the two screws (9), four washers
(10 and 11), and two nuts (12) at the top and the two
screws ( 13) and nuts (14) at the bottom and remove
the load terminal board (8).
(C) Disassemble load terminal board (8) as
shown in detail A.
(d) Inspect load terminal board (8) for dam-
aged threads on studs, and signs of physical damage.
(e) Reassemble in the reverse order of
(2) Installation. See f i g u r e 3 - 2 4 and install load
terminal board in reverse order of removal.
c. Replacement of Lost or Broken Terminal Clip
(R~ainer, Safety Clip).
The terminal clip is a compo-
nent of both the load terminal and the ground terminal.
If the terminal clip is lost or broken, fabricate as
(1) Requisition bulk wire NSN 9505-00-804-3814
(0.042 inch diameter) for the ground terminal (ground
stud). Requisition bulk wire NSN 9505-01-049-0144
(0.050 inch diameter) for the load terminal.
(2) Cut off about 3 inches of the wire; short
enough to keep the clips from touching another terminal
or the generator frame in the open or closed position.
(3) Slip the wire through the hole in the terminrd.
(4) Hold the terminal as shown (Detail A,
f i g u r e
3 - 2 4 . 1 ) and bend both ends of the wire straight up keep-
ing the wire in as straight a line as you can with the
(5) Bend the wire into back-to-back 90° angles
(Detail B, f i g u r e 3 - 2 4 . 1 ) so that the legs of both angles
are about one-half inch long.
(6) Bend the ends of each 90° angle down and
around into a U-shape (Detail C, f i g u r e 3 - 2 4 . 1 ) so that if
done properly, the clip will hold the nut when it is un-
screwed to install the cable (Detail D, f i g u r e 3 - 2 4 . 1 ) .
d. Repair. Repair damaged threads with a die or by
fili~ w~ne mill triangular file,
3 - 1 4 3 .
C u r r e n t
T r a n s f o r m e r
A s s e m b l y .
See f i g u r e 3 - 2 4 and inspect the current transformer
assembly (18 ) for cracks, breaks, loose mounting, loose
connections, corrosion and other damage.
3 - 1 4 4 . R e c o n n e c t i o n B o a r d .
See f i g u r e 3 - 2 5 and proceed as follows:
a. Inspection. Inspect reconnection board (
1 5 ,
f i g . 3 - 2 4 ) for cracks, breaks, loose mounting nuts, and
& Testing. Test reconnection board for continuity
(1) Remove 12 nuts ( 1 , f i g . 3 - 2 5 ) holding insula-
tor (20) and remove insulator (2o).
(2) Inspect bus bars (19) on rear of insulator (20)
and replace bus bars if damaged or missing,
(3) See f i g u r e 2 - 4 and check for continuity be-
tween studs 1 and 4;2 and 5;3 and 6;7 and 10;8 and
11; and 9 and 12. If no continuity, check respective
studs for continuity on insulator ( 2 4 , f i g . 3 - 2 5 ) , If
continuity is not obtained, generator is at fault. If check
indicates continuity, replace reconnection panel.
c. Replacement. Replace reconnection board
( 1 5 ,
f i g . 3 - 2 4 ) as follows:
(a) Remove four screws ( 16) which secure the
reconnection board (15) to the brackets (17).
(b) Tag and disconnect wires at back of recon-
(c) Remove reconnection board (15 ).
(2) Installation. Install reconnection board (15 )
using removal steps in reverse order.
Q. Repair. Repair reconnection board (see f i g . 3 - 2 5 )
by replacement of damaged components.
C h a n g e 1 3
3 - 7 1