TM 9-4520-258-14
4-24. CONTROL BOX ASSEMBLY - continued.
b.
Repair
(1)
Inspect all parts for wear, cracks, corrosion, bent or broken terminals, broken/cracked glass. Inspect
all hardware for stripped or damaged threads.
(2) Repair limited to replacement of damaged parts.
c.Assembly (Refer to Figure 4-31) Terminal Boards/Transformer
(1)
Install ground wire (1), two lockwashers (2), screw (3) and nut (4).
(2)
Install seven wires (5), lockwashers (6) and nut (7).
(3)
Install two terminal marking strips (8), terminal boards TB3 (9) and TB1 (10), four screws (11), four
lockwashers (12) and four nuts (13).
(4)
Connect wires to top of TB3 (9) as follows.
(a)
Connect wire CB2-2 to TB3-1
(b)
Connect wire CB2-1 to TB3-2
(c)
Connect wire S1-B to TB3-2
(d)
Connect wire T2-SEC to TB3-3
(e)
Connect wire Sl-10 to TB3-4
(f)
Install two terminals (14) and TB3-6 and TB3-7.
(g)
Connect wire TT-POS to TB3-8
(h)
Connect wire DS2-POS to TB3-10
(i)
Connect wire DS3-POS to TB3-11
(5) Connect wires to top of TB1 (10) as follows.
(a)
Connect wire CB1-l to TB1-1
(b)
Connect wire S1-l to TB1-2
(c)
Position jumper bar (15) between terminals TB 1-3 through TB1-7
(d)
Connect wires S1-2 and DS1-NEG to TB1-3
(e)
Connect wire TT-NEG to TB1-5
4-100
