ARMY TM 9-6115-644-24
AIR FORCE TO 35C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
2-25 OIL PRESSURE INDICATOR.
2-25-1
a.
b.
2-25-2
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
1.
m,
n,
o.
p.
q.
r.
s.
t.
u.
2-25-3
a.
Inspection.
Shut down generator set.
Inspect indicator for broken lens, cracked housing, or other damage.
Shut down generator set.
Open battery access door and disconnect negative battery cable.
Release control panel by turning two fasteners and lower control panel slowly.
NOTE
On MEP-805A, ensure frequency selector switch is in 50 Hz position.
isolate generator set VOLTAGE adjust potentiometer by disconnecting wire 137A from voltage
regulator, terminal 5, and wire 107G from kilowatt transducer, (40, FIGURE 2-14) terminal V1.
Disconnect and isolate electrical lead from terminal S of OIL PRESSURE indicator.
Set multimeter for ohms and connect between wires 137A and 107G.
Adjust potentiometer until multimeter indicates between 92.7 and 113.3 ohms resistance.
Disconnect multimeter, but do not disturb potentiometer adjustment.
Connect jumper wire between disconnected wire 107G and terminal G of OIL PRESSURE indicator.
Connect jumper wire between disconnected wire 137A and terminal S of OIL PRESSURE indicator.
Connect negative battery cable and move MASTER SWITCH to PRIME & RUN position.
OIL PRESSURE indicator should indicate between 32 and 48 PSI.
Move MASTER SWITCH to OFF position and disconnect negative battery cable.
Repeat steps f through h, setting potentiometer to between 30.15 and 36.85 ohms.
Connect negative battery cable and move MASTER SWITCH to PRIME & RUN position.
OIL PRESSURE indicator should indicate between 72 and 80 PSI.
Move MASTER SWITCH to OFF position and disconnect negative battery cable.
Replace OIL PRESSURE indicator if it does not function properly.
Remove jumper wires and connect electrical leads to OIL PRESSURE indicator, voltage regulator,
and kilowatt transducer.
Raise and secure control panel.
Connect negative battery cable and close access doors.
Removal.
Shut down generator set.
Change 1
2-57
