Usage:
Component Abbreviations (REF 5N360)
- ALT
- ALTERNATOR
- AMM
- AMMETER
- ASOS
- AIR SHUT-OFF SOLENOID
- ASSV
- AIR START SOLENOID VALVE
- B-
- BATTERY NEGATIVE
- B+
- BATTERY POSITIVE
- BATT
- BATTERY
- CB
- CIRCUIT BREAKER
- CT
- CRANK TERMINATE
- D
- DIODE
- EGA
- ELECTRIC GOVERNOR ACTUATOR
- EGC
- ELECTRIC GOVERNOR CONTROL
- ERI
- ENGINE REVERSAL INDICATOR
- ERS
- ENGINE REVERSAL SWITCH
- ESS
- ELECTRIC SPEED SWITCH
- FSOS
- FUEL SHUT-OFF SOLENOID
- HWTAS
- HIGH WATER TEMPERATURE ALARM SWITCH
- LOPAS
- LOW OIL PRESSURE ALARM SWITCH
- LWTAS
- LOW WATER TEMPERATURE ALARM SWITCH
- MGOPG
- MARINE GEAR OIL PRESSURE GAGE
- MGOPSU
- MARINE GEAR OIL PRESSURE SENDING UNIT
- MGOTAS
- MARINE GEAR OIL TEMPERATURE ALARM SWITCH
- MPU
- MAGNETIC PICK-UP
- NSS
- NORMAL SHUT-OFF SWITCH
- OPG
- OIL PRESSURE GAGE
- OPI
- OIL PRESSURE INDICATOR
- OPS
- OIL PRESSURE SWITCH
- OPSS
- OIL PRESSURE STEP SWITCH
- OPSU
- OIL PRESSURE SENDING UNIT
- OSI
- OVERSPEED INDICATOR
- OSS
- OVERSPEED SWITCH
- PB
- PUSH BUTTON
- PP
- PRELUBE PUMP
- PPMS
- PRELUBE PUMP MAGNETIC SWITCH
- PPPS
- PRELUBE PUMP PRESSURE SWITCH
- PS
- PINION SOLENOID
- RES
- RESISTOR
- RESS
- REMOTE EMERGENCY SHUT-OFF SWITCH
- RNS
- REMOTE NORMAL SHUT-OFF SWITCH
- RSS
- REMOTE START SWITCH
- SM
- STARTER MOTOR
- SMMS
- STARTER MOTOR MAGNETIC SWITCH
- SR
- SLAVE (SHUTDOWN) RELAY
- TD
- TIME DELAY
- TM
- TACHOMETER
- TS
- TERMINAL STRIP
- TSS
- TACHOMETE SPEED SENSOR
- WTG
- WATER TEMPERATURE GAGE
- WTI
- WATER TEMPERATURE INDICATOR
- WTS
- WATER TEMPERATURE SWITCH
- WTSU
- WATER TEMPERATURE SENDING UNIT
- Z
- ZENER DIODE
Wire Color Code Abbreviations
- B
- BLACK
- BR
- BROWN
- B/W
- BLACK WITH WHITE STRIPE
- CU
- COPPER (BARE WIRE)
- DK BL
- DARK BLUE
- DK GR
- DARK GREEN
- GR
- GREEN
- LT BL
- LIGHT BLUE
- O
- ORANGE
- O/B
- ORANGE WITH BLACK STRIPE
- P/B
- PINK WITH BLACK STRIPE
- PU/W
- PURPLE WITH WHITE STRIPE
- R
- RED
- W
- WHITE
- W/O
- WHITE WITH ORANGE STRIPE
- W/R
- WHITE WITH RED STRIPE
- Y
- YELLOW
- Y/BR
- YELLOW WITH BROWN STRIPE
ELECTRIC PROTECTIVE SYSTEM SCHEMATIC
NOTE A: Terminal strip jumpers between terminals TS17 & TS18 and TS19 & TS20 are not required for low oil pressure and high water temperature alarms.
NOTE B: The wire at terminal strip between terminals TS26 & TS27 is in the wiring harness when a UG8D or UG8L is installed. No wire is required when an EGA is used.
NOTE C: This wire is provided by customer if electric starter motor(s) are not used.
3500 ENGINE WIRING DIAGRAM (REF 5N8944) (All Possible Combinations)
NOTE A: Reverse wires at SW1 and SW2 for reverse rotation engines.
NOTE B: Jumper required only with UG8D and UG8L governors.
TYPICAL JUNCTION BOX WIRING DIAGRAM (REF 5N8944)
NOTE A: Terminal strip jumpers between terminals TS17 & TS18 and TS19 & TS20 are not required on Marine Engines which have alarms only for low oil pressure and high water temperature.
NOTE B: Earlier circuit breakers were as follows: CB3 and CB5, 15 amp; CB4, 4 amp.
JUNCTION BOX (REF 5N8513)
*Nomenclature in () indicates former identification
JUNCTION BOX WIRING HARNESS (REF 5N8511)
CUSTOMER WIRING WITH ELECTRIC PROTECTIVE SYSTEM (NOTE A)
SEE NOTES ON PAGE THAT FOLLOWS
NOTE A: Wire, cable and components shown with dotted lines are to be added by customer. See wire and cable gage charts for size selection.
NOTE B: Do not use remote emergency switch for normal engine shutdown. The use of emergency switch requires manual reset of air shut-off at top of air inlet housing.
NOTE C: Caterpillar alarm and prealarm contacts are rated for a maximum of 3 amps inductive at the charging system voltage.
NOTE D: Switch to be a single pole, normally open switch (may be latching if desired) with a minimum contact rating of .5 amp inductive at the charging system voltage.
NOTE E: Switch to be a single pole, normally open switch (may be latching if desired) with a minimum contact rating of 1 amp inductive at the charging system voltage.
NOTE F: Magnetic pick-up and oil pressure switch to be wired to electric governor control (Woodward 2301) with a two conductor shielded cable (Belden Corp. type 8780 or equivalent). Shields are to be grounded at electric governor control grounding stud. Each shield should not have more than one ground connection.
NOTE G: Woodward 2301 Electric Governor Control terminal identification chart:
