TM 5-6115-465-12
TO 35C2-3-446-1
NAVFAC P-8-625-12
TM 06858B/06859D-12
c. Fuel Level Gauge.
(e) Connect rheostat and oil pressure
gauge in series with a 24 Vdc source with negative
(1) Removal.
lead to oil pressure gauge terminal marked IGN.
(a) Tag and disconnect electrical leads
(f) Oil pressure gauge should indicate 60
PSI.
to fuel level gauge.
(b) Remove nuts (9, figure 3-37, sheet
(g) Replace oil pressure gauge if it does
1 of 3), lockwaehers (10) and clamp (11).
not function properly.
(4) Installation. Install oil pressure gauge in
(c) Remove fuel level gauge (12) from
reverse order of removal procedures.
panel.
(2) Cleaning and Inspection.
b.
Coolant Temperature Gauge.
(1) Removal.
(a) Clean fuel level gauge with filtered
compressed air or wipe with a clean, lint-free
(a) Tag and disconnect electrical leads to
cloth lightly moistened with an approved solvent.
coolant temperature gauge.
(b) Visually inspect fuel level gauge for
(b) Remove nuts (5, figure 3-37, sheet 1
corrosion, cracked casing, cracked or broken glass,
of 3), lockwashers (6) and clamp (7).
stripped or otherwise damaged threads, and evidence
of other damage.
(c) Remove coolant temperature gauge (8)
from panel.
(3) Testing.
(a) Connect an ohmmeter across the
(2) Cleaning and Inspection.
wiper arm terminal and any other terminal of a
(a) Clean coolant temperature gauge with
potentiometer.
filtered compressed air or wipe with a clean, lint-
free cloth lightly moistened with an approved sol-
(b) Adjust potentiometer until ohmmeter
vent.
indicates 30 ohms resistance.
(b) Visually inspect coolant temperature
(c) Remove ohmmeter, but do not disturb
gauge for corrosion, cracked casing, cracked or
potentiometer adjustment.
broken glass, stripped or otherwise damaged
threads, and evidence of other damage.
(d) Connect the fuel level gauge in series
with a 24 Vdc source with the negative lead to fuel
(3) Testing.
level gauge terminal marked IGN.
(a) Connect an ohmmeter across the wiper
(e) Fuel level gauge should indicate
arm terminal and any other terminal of 10-500 ohm
EMPTY.
potentiometer.
(f) Disconnect 24 Vdc positive lead from
(b) Adjust potentiometer until ohmmeter
fuel level gauge SEND terminal and connect potenti-
indicates 460 ohms resistance.
ometer adjusted to 30 ohms resistance.
(c) Disconnect ohmmeter but do not dis-
(g) Fuel level gauge should indicate FULL.
turb potentiometer adjustment.
(h) Replace fuel level gauge if it fails to
(d) Connect potentiometer to coolant tem-
function properly.
perature gauge terminal marked SEND.
(4) Installation. Install fuel level gauge in re-
(e) Connect potentiometer and coolant
verse order of removal procedures.
temperature gauge in series with a 24 Vdc source
with negative lead to temperature gauge terminal
d.
Hour meter.
marked IGN.
(1) Removal.
(f) Coolant temperature gauge should in-
dicate 240F. If it does not, replace it.
(a) Tag and disconnect electrical leads to
hour meter.
(4) Installation. Install coolant temperature
(b) Remove self-locking nuts (13, figure
gauge in reverse order of removal instructions.
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