TM 5-6115-590-12
(2) Cleaning and Inspection.
(a) Clean 400 Hz frequency meter with filtered compressed air and an electrician's brush or wipe with a clean
rag lightly moistened with an approved cleaning solvent.
(b) Visually inspect 400 Hz frequency meter for corrosion, cracked case or glass, damaged threads and other
evidence of damage.
(3) Installation. Install 400 Hz ammeter in reverse order of removal procedures.
d. 400 Hz Ammeter (M4).
(1) Removal.
(a) If wiring harness has not been removed, tag and disconnect electrical leads to 400 Hz ammeter (45).
(b) Remove hardware (14,15,46,47), then remove 400 Hz ammeter and gasket (44).
(2) Cleaning and Inspection.
(a) Clean 400 Hz ammeter with filtered compressed air and an electrician's brush or wipe with a clean rag
lightly moistened with an approved cleaning solvent.
(b) Visually inspect 400 Hz ammeter for corrosion, cracked case or glass, damaged threads and other
evidence of damage.
(3) Installation. Install 400 Hz ammeter in reverse order of removal procedures.
e. 400 Hz Voltmeter (M5).
(1) Removal.
(a) If wiring harness has not been removed, tag and disconnect electrical leads to 400 Hz voltmeter (36).
(b) Remove hardware (18,19,88,39), then remove 400 Hz voltmeter and gasket (87).
(2) Cleaning and Inspection.
(a) Clean 400 Hz voltmeter with filtered compressed air and an electrician's brush or wipe with a clean rag
lightly moistened with an approved cleaning solvent.
(b) Visually inspect 400 Hz voltmeter for corrosion, cracked came or glass, damaged thrmds and other
evidence of damage.
(3) Installation. Install 400 Hz voltmeter in reverse order of removal procedures.
f. 60 Hz Frequency Meter (M8).
(1) Removal.
(a) If wiring harness has not been removed, tag and disconnect electrical leads to 60 Hz frequency meter (42).
(b) Remove hardware (16,17,40,41), then remove 60 Hz frequency meter and gasket (43).
(2) Cleaning and Inspection.
(a) Clean 60 Hz frequency meter with filtered compressed air and an electrician's brush or wipe with a clean
rag lightly moistened with an approved cleaning solvent.
(b) Visually inspect 60 Hz frequency meter for corrosion, cracked case or glass, damaged threads, and other
evidence of damage.
(3) Installation. Install 60 Hz frequency meter in reverse order of removal procedures.
g. 60 Hz Ammeter (M6).
(1) Removal.
(a) If wiring harness has not been removed, tag and disconnect electrical leads to 60 Hz ammeter (25).
(b) Remove hardware (20,21,26,27), then remove 60 Hz ammeter and gasket (24).
(2) Cleaning and Inspection.
(a) Clean 60 Hz ammeter with filtered compressed air and an electrician's brush or wipe with a clean rag
lightly moistened with an approved cleaning solvent.
(b) Visually inspect 60 Hz ammeter for corrosion, cracked case or glass, damaged threads and other damage.
(3) Installation. Install 60 Hz ammeter in reverse order of removal procedures.
h. 60 Hz Voltmeter (M7).
(1) Removal.
(a) If wiring harness has not been removed, tag and disconnect electrical leads to 60 Hz voltmeter (29).
(b) Remove hardware (22,23,30,31), then remove 60 Hz voltmeter and gasket (28).
(2) Cleaning and Inspection.
(a) Clean 60 Hz voltmeter with filtered compressed air and an electrician's brush or wipe with a clean rag
lightly moistened with an approved cleaning solvent.
(b) Visually inspect 60 Hz voltmeter for corrosion, cracked case or glass, damaged threads andother evidence
of damage.
(3) Installation. Install 60 Hz voltmeter in reverse order of removal procedures.
i. Exhaust Gas Temperature Indicator (M9).
(1) Removal.
(a) If wiring harness has not been removed, tag and disconnect electrical leads to exhaust gas temperature
indicator (66).
(b) Remove screws (52) and washers (53), then remove indicator (66) with attached resistor bracket assembly
(67) and packing (65).
(c) Remove two screws attaching resistor bracket assembly to exhaust temperature ndicator. If repair of
resistor bracket is necessary, remove hardware (items 68 through 81) to remove resistor thermocouple assembly (71)
from bracket (80).
(2) Cleaning and Inspection.
(a)
Clean exhaust gas temperature indicator with filtered compressed air and an electri-
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