P-8-627-34
TO 35C2-3-442-2
TM-07464A-35
TM 5-6115-457-34
Output measured at terminals 3 and 4 shall
transformer (T1) and resistor (R1) by re-
be 9 VAC.
moving their attaching screws and nuts
(2 each). See figure 6-22.
c. Test engine cranking relay K3 by
applying 24 VDC to terminals Xl and X2.
d. Remove dc control relay assembly
Normally open contacts A 1 -A2 shall close.
(A5) by removing the four nuts securing
the assembly in position.
6 - 1 0 1 . REPAIR.
NOTE
a. Repair or fabricate mode I relay box
assembly wiring harness according to figure
Refer to paragraph 6-86 for dc
6-27.
relay assembly maintenance in-
structions.
b. Straighten dented or distorted sheet
metal parts using proper tools. Blend in
e. Remove nut (4, figure 6-26) and
repaired area with a suitable abrasive
washer (5) securing rheostat (6) to chassis
paper and touch up painted surfaces. Re-
assembly (39).
stencil panel markings as necessary.
f. Remove wire harness (25) by re-
6-102. REASSEMBLY. Refer to figure
moving the four screws and nuts securing
6-26 and reassemble the mode I relay box
each of the ten connectors to the chassis
assembly in reverse order of index num-
assembly (39).
bers assigned. Pay particular attention to
the following:
NOTE
a. Assemble battery charging ammeter
Electrical connector covers (7 and
shunt (R13), engine cranking relay (K3),
8) will fall free.
transformer (T1), and resistor (R1) in
position using two each, screws and nuts.
6-99. CLEANING. Clean all components
See figure 6-22.
with a clean lint-free cloth moistened in
b. Assemble DC control relay assembly
an approved cleaning solvent and dry thor-
(A5) in position using four nuts,
oughly.
c. Install wire harness (25, figure
6-26) in chassis (39) and secure in position
6-100. INSPECTION AND BENCH TEST.
with four screws and nuts at each of the
ten connectors.
a . Harness.
WARNING
1. Inspect harness wiring for defec-
Avoid breathing fumes generated by
unsoldering/soldering. Eye pro-
tive insulation and continuity.
tection is required.
2. Inspect harness connectors for
d. Connect wire harness leads to com-
damaged threads; bent, loose or missing
ponentry using figure 1-15 as a guide.
pins and for shorts.
NOTE
b. Test transformer T1 by applying
Solder connections shall be made
9 VAC, to terminals 1 and 2. (Excitation
using solder, Federal Specification
current shall be less than 0.1 ampere. )
QQ-S-571, Sn 60.
Change 8
6-75
