(3) Testing.
ARMY TM 9-6115-464-12
AIR FORCE TO 35C2-3-445-1
NAVY NAVFAC P-8-624-12
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Connect an ohmmeter across the wiper arm terminal and any other terminal of a potentiometer.
Adjust potentiometer until ohmmeter indicates 30 ohms resistance.
Remove ohmmeter, but do not disturb potentiometer adjustment.
Connect the fuel level gauge in series with a 24 Vdc source with the negative lead to fuel level
gauge terminal marked IGN.
Fuel level gauge should indicate EMPTY
Disconnect 24 Vdc positive lead from fuel level gauge SEND terminal and connect potentiometer
adjusted to 30 ohms resistance.
Fuel level gauge should indicate FULL.
Replace fuel level gauge if it fails to function properly.
(4) Installation.
(a) Install fuel level gauge (12, Figure 4-38, sheet 1 of 3) onto panel.
(b) Install clamp (11), lockwashers (10), and nut (9).
(c) Reconnect electrical leads to fuel level gauge.
d. Hourmeter.
(1)
(2)
(3)
(4)
Removal.
(a) Tag and disconnect electrical leads to hourmeter.
(b) Remove self-locking nuts (13, Figure 4-38, sheet 1 of 3), and screws (14).
(c) Remove hourmeter (15) from panel.
Cleaning and Inspection.
(a) Clean hourmeter with filtered compressed air or wipe with a dean, lint-free cloth Iightly moistened
with an approved solvent.
(b) Visually inspect hourmeter for corrosion, cracked casing, cracked or broken glass, stripped or
otherwise damaged threads, and evidence of shorting or other damage.
Testing. Connect hourmeter to a 24 Vdc source and observe for proper operation. Replace hourmet-
er if it fails to operate correctly.
Installation.
(a) Install hourmeter (15, Figure 4-38, sheet 1 of 3) onto panel.
(b) Install screws (14) and self-locking nuts (13).
(c) Reconnect electrical leads to hourmeter.
e.
Battery Charging Ammeter.
(1) Removal.
(a) Tag and disconnect electrical leads to battery charging ammeter.
(b) Remove self-locking nuts (16, Figure 4-38, sheet 1 of 3) and screws (17).
(c) Remove battery charging ammeter (18) from panel.
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