Engine System - Petrol (Gasoline) 209Service Manual – Haram Captor II
Lost Oil Pressure Shutdown
• If the engine oil pressure is lost, the oil pressure switch will close causing the low oil pressure shut down
relay to energize taking power away from the “closed at rest” contact. This removes the power from the
run enable signal to pin 8 of the Woodward L series actuator. The actuator immediately switches off
the internal ground for the shut down control circuit at pin 9 causing the ignition request relay to de-
energize. This shuts down the ignition system and the carburetor fuel shut off solenoid causing the engine
to stall immediately. Note that the power relay remains “latched-on” due to ignition voltage supplied by
the control relay.
• When the low oil pressure shut down relay energizes, power is also lost for the engine run signal to the
main machine controller. The loss of the engine run signal is interpreted as “loss of oil pressure” by the
main machine controller. It responds by immediately displaying an engine warning message to the
operator and removing the 12v power going out to the ignition request circuit. If the engine has not
already shut down, the system will then shut down as if the operator had shut off the key (Normal engine
shut off).
Note: If the engine stalls due to loss of fuel or ignition, oil pressure will eventually be lost. When
this happens the main machine controller will treat it as a lost oil pressure condition,
display a warning message to the machine operator and initiate the lost oil pressure shut
down sequence.
10A
IGN. REQUEST
15A
MAIN
5A
CONTROLLER
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
WOODWARD
FUEL L OCK -OFF
SOLENOID
N3 -0342 OR
FUEL PUMP
OIL SWITCH
(OPEN FOR
PRESSURE)
TEMP. SWITCH
(OPEN FOR
NORMAL TEMP.)
SHIELDED WIRE
RUN ENA BLE SIGNAL
SHUTDOWN S IGNAL
CRANK REQUEST - BLU/PNK 16
IGNITION REQUEST - PNK 16
ENGINE RUN (12V INPUT) - GRY 16
HIGH COOLANT TEMP. (GROUND INPUT) - GRN /YEL 16
SPEED 2 (12V OUTPUT) - RED 16
SPEED 3 (12V OUTPUT) - BLACK 16
MAGNETIC
PICK-UP
(Engine RPM
Sensor)
STARTER
BATTERY
ALTERNATOR
IGNITION POWER
FOR IGNITER
IGNITION CONNECTOR
FOR PLUGGING INTO
KUBOTA IGNITIO N HARNESS
KUBOTA
FUEL
SOLENOID
EG551 -44790
SPEED 2 (12V OUTPUT)
GRY/BLU 16
SPEED 3 (12V OUTPUT)
GRY/ORG 16
SHIELDED WIRE
WOODWARD
AUTO CHOKE
SOLENOID
SA-4741
BLU/LT
GRN 16
HIGH COOLANT TEMP.
SHUTDOWN RELAY
1 5 4
3
2
BLK
16
CONTROL
RELAY
1
5 4
3 2
BLK 16
IGNITION
REQUEST RELAY
1
5 4
3
2
RED
18
POWER
RELAY
1
5
4
3
2
RED 14
LOW OIL PRESS.
SHUTDOWN
RELAY
1
5 4
3
2
AEES RN65127
FUSE & RELAY
BLOCK ASSY
CRANK
REQUEST
RELAY
BLK/ WHT 16
RED/ GRN 16
YEL 16
S
R
P
N
M
L
F
E
D
C
B
A
K
J
H
G
S
R
P
N
M
L
F
E
D
C
B
A
K
J
H
G
CO NNECTOR # 1
PACKARD 16 PIN MALE
P/N 15326863
(TO NILFISK HARNESS)
CO NNECTOR #2
PACKARD 16 PIN FEMALE
P/N 15326868
(TO NILFISK HARNESS)
WOODWARD
L-SERIES
ACTUATOR
DEUTSCH
CONNECTOR
DT06 -12SA
RED 18
TO PIN A
BLK
18
BLK 18
TO PIN B
BLK/
WHT 16
BLK/
WHT 16
GRY/BLU 16
GRY/ORG 16
RED/
BLK
14
RED/BLK 14
RED/BL K 16
LT BLU 16
LT BLU
16
GRY/
RED 16
GRY/
RED 16
GRY/
RED 16
GRY 16
GRY 16
GRY 16
GRY 16
GRY
16
GRY 16
GRN 16
BLK 16
RED/ GRN 16
RED/ GRN 16
PNK /GRN 16
PNK /GRN
16
PNK /
GRN 16
PNK /
BLU 16
PNK /
BLU 16
PNK /BLU 16
PNK /BLU 16
PNK /BLU 16
PNK /BLK 16
PNK /BLU 16
PUR 16
PUR 16
GRY/WHT 16
1 2 3
10k
10k
0.047µF
0.047µF
RED 16
BLACK 16
DT04 -6P
FUEL S ELECT
CONNECTOR
CT00023
DT06 -6S (BLACK)
GASOLINE PLUG
CT00024
DT06 -6S (GREY)
PROPANE PLUG
FUEL PUMP (+) - PNK /YEL 16
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