Jacobsen HR5111 Service And Repair Instructions page 229

PROBLEM
3. Only one wing does not
come on.
4. Only the front mower
does not come on.
5. Engine shuts down
immediately when oper-
ator leaves seat. (Imple-
ment switch ON.)
6. Engine does not shut
down when operator
leaves.
1. Engine oil pressure light
does not come on when
ignition switch is turned
ON.
Ground BLU wire at
sending unit; light does
not come ON, see a.
Light comes ON, see b.
2. Engine oil pressure light
does not come on when
ignition switch is turned
ON.
Ground GRY/WHT wire at
sending unit; light does
not come ON, see a.
SECTION 10B. FAILURE ANALYSIS
PROBABLE CAUSE
IMPLEMENT CIRCUITS (Continued)
a. Arm interlock switch not closing.
b. Faulty arm interlock switch.
c. Faulty motor valve solenoid.
a. Arm interlock switch not closing.
b. Faulty arm interlock switch.
c. Faulty motor valve solenoid.
a. Faulty time delay relay.
b. Faulty wiring or bad electrical
ground.
a. Faulty time delay relay.
b. Faulty wiring or bad electrical
ground.
c. Interlock circuit electrically
bypassed.
GAUGES AND PANEL LIGHTS
a. Bulb burned out.
b. Faulty sending unit.
c. Faulty wiring or bad electrical
ground.
d. 10 amp gauge/panel light circuit
breaker tripped.
a. Bulb burned out.
b. Faulty sending unit.
c. Faulty wiring or bad electrical
ground.
d. 10 amp gauge/panel light circuit
breaker tripped.
10B-3
ELECTRICAL SYSTEM
REMEDY
a. Check switch/adjust (Section 2C).
b. Test switch (Section 10G).
c. Check solenoid plug LED.
ON — Push manual override.
Mower comes on, test solenoid
(Section 10I).
Mower does not come on,
hydraulic problem (Section 8B).
OFF — Check switches and
wiring (Section 10C).
a. Check switch/adjust (Section 2C).
b. Test switch (Section 10G).
c. Check solenoid plug LED.
ON — Push manual override.
Mower comes on, test solenoid
(Section 10I).
Mower does not come on,
hydraulic problem (Section 8B).
OFF — Check switches and
wiring (Section 10C).
a. Test/replace (Section 10H).
b. Test (Section 10C).
a. Test/replace (Section 10H).
b. Test (Section 10C).
c. Reconnect to manufacturer's
specifications.
a. Replace.
b. Replace.
c. Test (Section 10C).
d. Reset/test (Section 10J).
a. Replace.
b. Replace.
c. Test (Section 10C).
d. Reset/test (Section 10J).
10B