TM 55-4920-221-14
1.
Resistor
5.
Capacitor
9.
Screw
2.
Resistor
6.
Pilot light assembly
10.
Lockwasher
3.
Resistor
7.
Toggle switch
11.
Nut
4.
Capacitor
8.
Terminal block
12.
Panel
Figure 14. Phase Sequence Indicator, Exploded View.
panel with attaching hardware.
(2) Remove assembled resistors from rear of
control panel by removing attaching hardware.
(2) Connect leads to terminals of resistors
(36, 37, and 40).
b. Disassembly.
(1) Remove resistors (36 and 37) from
128. SHUNTS AND BUS BARS.
brackets (70) by removing nut (39) and stove rod (38).
a. Removal.
(2) Remove resistor (40) from upper bracket
(1) Tag and disconnect leads attached to
by removing nut (42) and screw (41).
shunts (10, 13, and 14, figure 12), and bus bars (16 and
c. Cleaning and Inspection.
19).
(1) Clean parts with a cloth dampened in dry
(2) Remove shunts from bus bars (19, 27, 28,
cleaning solvent P-D-680 and dry thoroughly.
and 29) by removing two nuts (12), screws (11), and
(2) Visually inspect resistors for cracks,
four screws (15).
breaks, indications of discoloration or burned condition,
(3) Remove bus bar (19) from bus bars (16)
and damaged terminals.
by removing two nuts (18), screws (17).
(3) Inspect threaded parts for worn or
(4) Remove nut (22) and screw (21) securing
damaged condition.
bus bar (20) to bus bar (26).
d. Assembly.
(5) Remove bus bars (16, 26, 27, 28, and 29)
(1) Attach resistor (40, figure 12) to the upper
from binding posts by removing hex nuts from binding
bracket with screw (41) and nut (42).
post terminals.
(2) Secure resistors (36 and 37) between
(6) Remove bus bar (20, figure 12) from
brackets (70) with stove rod (38) and nut (39).
control panel by separating bus bar (30, figure 7) from
e. Installation.
bus bar (20, figure 12) as described in paragraph
(1) Secure assembled resistors on control
115a(6).
44
