TM 11-6125-240-34
4-16. Reassembly of Regulator Housing
Before mounting these components the leads must be
bent at right angles, 0.72 inch from the center of the
mounting hole. Exercise extreme care when bending
a. Insert the time totalizing meter (31) in the hous-
ing (32), and fasten in place with two screws (30), flat
these leads to avoid fracturing the case. Apply a light
washers (29), lockwashers (28), and nuts (27).
coating of Thermacote (manufactured by Thermally
Co., Dallas, Texas, FSCM10103) to contact surfaces of
NOTE
Time totalizing meter appears only in
parts just before assembling. Buildup of parts (40)
CSV2215-3 units with SN suffix D, or later.
through 48, fig. 4-1) must be as illustrated.
(3) Polarized capacitors C3, C4, C5, and C7 must
b. Attach the angle bracket (26) inside the housing
with a flat washer (25) and screw (24).
be attached with the positive lead positioned as shown
in figure 4-8.
NOTE
If card assembly to be used is a 4B93-1-A or
(4) Semiconductor diodes CR1, CR2, CR3, CR5,
CR6, CR7, CR8, and CR9 must be attached with the
CSV1186-1, the voltage adjust variable resis-
tor (36) must be installed during this step.
cathode lead positioned as shown in figure 4-8.
c. Position capacitor C2 in the housing and secure
(5) Leads must follow the routing, termination,
with a retaining clamp (21) and two screws (20).
and color-coding shown in figure 4-1.
d. Position the data plate (18) on the outside of the
(6) Use solder conforming to Federal Specification
housing and assemble the two test point jacks (17),
QQ-S-571, SN63; use a heatsink in all soldering opera-
using the original hardware.
tions.
e. Place the capacitor (15) in the clip provided with
b. When all defective components have been
the lug terminal end down.
replaced, repair protective coating as follows.
f. Position terminal board assembly TB1 (12) on the
WARNING
end of the housing and secure at the outside with four
Polyurethane is caustic and emits toxic
screws (13) and four flat washers (14). Assemble the
fumes. Prolonged skin contact and breathing
of fumes must be avoided. Provide forced ven-
strap assembly (10) and angle bracket (11 ) in terminal
board assembly TB1 over the studs; secure with the flat
tilation when working in an enclosed area.
washers (8), lockwashers (7), and nuts (6). Be sure to
Wear protective gloves, and throw them away
engage lug terminal (16) of capacitor (15) with bolt (9)
after completion of this procedure.
as shown.
NOTE
g. Install the designation plate (5) and terminal
The coating used is polyurethane resin PC18
board TB2 (2) inside the housing and secure with two
(manufactured by Hysol Div. of Dexter Corp.,
screws (3) and flat washers (8). Connect the electrical
Olean, N. Y., FSCM 04347).
leads (1) to the terminal board.
(1) Clean around components and new solder
joints with isopropyl alcohol to remove dirt, film and
4-17. Reassembly of Regulator Card As-
solder flux. Use oil free compressed air to blow off ex-
sembly CSV2215-2 or CSV2215-3
cess, then remove all alcohol by heating the circuit as-
a. Replace parts on the circuit card according to ap-
sembly in a vented oven about 1/2 hour at 190 to 210
proved shop techniques, with the special provisions
F. Allow circuit assembly to cool. The interval between
below (fig. 4-1 and 4-8).
cleaning and application must not exceed 4 hours.
CAUTION
Use a 50-watt (or less) soldering iron with a
(2) If reactor L1 required recoating, brush
grounded tip, Current leakage through some
RTV732 or RTV893 (manufactured by Chemical Prod-
soldering irons is sufficient to damage semi-
ucts Division of Dow Corning, Midland, Michigan,
conductor and transistors.
FSCM 71984) on the area around the adjusting screw
(1) Assemble resistor, capacitors, semiconductors,
Air dry 4 hours. Remove adjusting screw. Apply No.
transistors, and reactors as follows:
122 mold release grease (manufactured by Emerson
and Cuming, 50 Walpole, Canton, Mass., 02021, FSCM
(a) For components with axial leads bend at
right angles to fit into the assigned holes.
04552) to the screw hole and to the adjusting screw.
(b) Push the body of the component against the
Replace screw. Apply Lecogel HR34C (manufactured
surface of the board.
by AMF Electrosystems Division, Vandalia, Ohio,
(c) Using diagonal cutter pliers, bend leads
FSCM 07639) to the area around the adjusting screw
down and snip off about 1/16 to 1/18 inch long. Lead must
CAUTION
lie flush along the circuit track before soldering.
Use metal, glass, or hard plastic container for
(2) Silicon transistors Q4 and Q8 are mounted to
polyurethane resin. Do not use paper.
circuit card, using machine screws and hex nuts.
4-22
