Jacobsen HR5111 Service And Repair Instructions page 230

ELECTRICAL SYSTEM
PROBLEM
3. Panel light does not come
on when test switch is
pushed to the ON position. b. Battery dead.
4. Engine water temperature
gauge does not work or
is erratic .
Ground LT GRN wire at
sending unit; gauge does
not register, see b. Gauge
registers, needle moves
to the high side of scale.
5. Tachometer does not
work or erratic.
6. Hourmeter does not work.
7. Fuel gauge does not work
or erratic.
Ground TAN wire at
sending unit; gauge does
not register, see b. Gauge c. Faulty sending unit.
registers, needle moves
to the high side of scale.
8. Engine oil pressure light
does not go OFF when
engine is started.
Remove BLU wire at
sending unit; light goes
OFF, see b and c.
Light stays ON, see d.
9. Engine oil pressure light
does not go OFF when
engine is started.
Remove GRY/RED wire
at sending unit; light goes
OFF, see b and c.
Light stays ON, see d.
SECTION 10B. FAILURE ANALYSIS
PROBABLE CAUSE
GAUGES AND PANEL LIGHTS (Continued)
a. 10 amp gauge/panel light circuit
breaker tripped.
c. 50 amp tractor circuit breaker
tripped.
d. Faulty ignition switch contacts X-Y.
a. 10 amp gauge/panel light circuit
breaker tripped.
b. Faulty gauge.
c. Faulty sending unit.
d. Faulty wiring or bad electrical
ground.
e. Faulty wiring or bad electrical
ground.
a. 10 amp gauge/panel light circuit
breaker tripped.
b. Sending unit not adjusted.
c. Faulty sending unit.
d. Faulty tachometer.
e. Faulty wiring or bad electrical
ground.
a. 10 amp gauge/panel light circuit
breaker tripped.
b. Faulty hourmeter.
c. Faulty wiring or bad electrical
ground.
a. 10 amp gauge/panel light circuit
breaker tripped.
b. Faulty gauge.
d. Faulty wiring or bad electrical
ground.
a. No engine crankcase oil.
b. Faulty sending unit.
c. Internal engine problem.
d. Faulty wiring or bad electrical
ground.
a. No hydraulic oil.
b. Faulty sending unit.
c. Hydraulic system problem.
d. Faulty wiring or bad electrical
ground.
10B-4
REMEDY
a. Reset/test (Section 10J).
b. Charge/replace (Section 10D).
c. Test (Section 10J).
d. Test (Section 10G).
a. Reset/test (Section 10J).
b. Replace (Section 10K).
c. Replace (Section 10K).
d. Test (Section 10C).
e. Test (Section 10C).
a. Reset/test (Section 10J).
b. Adjust.
c. Replace.
d. Replace.
e. Test (Section 10C).
a. Reset/test (Section 10J).
b. Replace.
c. Test (Section 10C).
a. Reset/test (Section 10J).
b. Replace (Section 10K).
c. Replace (Section 10K).
d. Test (Section 10C).
a. Check (Section 11C).
b. Replace.
c. Refer to Engine Manufacturer's
Manual.
d. Test (Section 10C).
a. Check (Section 11B).
b. Replace.
c. See Section 8C.
d. Test (Section 10C).