T-630 CAT Engine Wiring

1 T-630 CAT Engine Wiring Start sequence: Key to Run position: The Amperite Relay in the Black Box timer sequence is started to test all diagnostic lights for 5 seconds. The fuel lift pump and injector pump are also energized. If the Engine is not started within 5 seconds, all lights go out but the low oil pressure light. It should go out when the Engine is started and oil pressure rises. Key to Start position: Electric flow to start passes through the key switch to Terminal E on the lower terminal in the black box. From E through the Neutral Start switch on the Main Pump to Terminal 1 on the upper strip. Then through one of the N/C contacts on the E-Stop to the Start Relay in the Black Box. This relay should then energize the starter. E-Stop pressed: All diagnostic lights come on and stay on. The fuel pump circuit is opened, and the circuit to activate the starter is opened. (It will not even try to turn the starter) Key Switched on, All 4 indicator lights stay on, but Engine will not try to start.

2 Engine will not even turn is pushed in on Black Box on drivers side of CAT Engine Trouble ShootingKey Switched on, No lights light, nothing works at allCheck and Re-Set Circuit Breaker in Black Box on drivers side of check battery voltageEngine suddenly starts running rough and puffing Lift Pump Fuse in Black BoxReplace FuseCheck Fuel Lift Relay in Black Box. Make sure 12v on Terminal 7 (Upper strip) with Key check 12v at Lift Pump. Possible clean and/or replace Lift PumpIf you do not have an Air Dryer on the machine, the Air Dryer Relay is a spare relay. Move the Air Dryer Relay to the Fuel Lift Pump on, Diagnostic lights come on and all but low oil go out after 5 seconds, but Engine does not even try to start (starter does not engage at all).Probably Neutral Start safety on main pump. With key off, confirm continuity between terminal E on lower strip and 1 on upper strip in Black Box. Is there Continuity?

3 Remove bolt connecting Air Cylinder eye to actuator arm on main pump. Check continuity again. Is it OK now?Move pump lever by hand back and forth slightly to see if continuity can be your local CAT to Neutral Start adjustment procedure in pump manual. Possible Switch replacement eye on cylinder rod turn at a time to correct to Black Box Wiring schematic. Blue wire from Terminal 1 goes to E-Stop, 1 of the Normally Closed contact blocks. Is there continuity through the contacts with the E-Stop out?Replace RelayRefer to Wiring diagram and confirm Wiring not OKCheck Start relay in Black Box for proper operation. Is it OK?Replace N/C ContactRefer to Wiring diagram and confirm Wiring not OKT-630 CAT Engine Trouble ShootingABCDEFGH I J60 AmpBreaker1234 56 7891011128586308785863087858630878586308 7E-StopRed #8 +12V on StarterRed #12 Start SignalBlue #12 Drive LightsBlack #8 GroundGlow PlugAir DryerFuel LiftStartOrange #14 Optional AirDryerWhite #8 Power to CabRed #10 Ignition OnGreen # 12 Glow PlugBlack #12 StartBlue #10 Drive LightsYellow # 12 High/LowBrown #12 Not UsedWhite #12 BUBlack #14 Black #14 Red #10 Glow PlugBlue #18 Neutral StartBrown #18 Oil PressureRed #14 Fuel ThermostatRed #14 Fuel LiftYellow #12 High/LowGray #14 Fuel PumpBlue #18 Neutral StartGreen - Low HydraulicBrown Oil PressureRed Water TempYellow Low WaterRed #8 Green #18 Low HydraulicSignalBlack #18 Yellow #18 Water Level SignalRed #18 Water TempGray #18 Water Level+12vRed #14 Alternator ExciteBlack #18 Black #18 Grounds #18 BlackRed #10 Red #10 Red #14 Red #14

4 Green #18 Orange #14 Red #18 Red #14 Red #12 Red #12 Blue #18 Blue #18 Black #18 Gray #14 Gray #14 Red #18+-34512 Black #18 Hydraulic LevelIndicator Lights in CabCab MainCat Main HarnessStarterWater Level, Alternator Excite, etcStarting Serial #06316 Light Test5 Relay12222345678910 Amp20 Amp30 AmpInline10 AmpE-StopGraingerTucker #QuantityPush-Pull6HW 1280575-1111NC/NO Contact Block w/Base6HX3580575-112-NO-NC1NO Contact6HZ0680575-112-NONC Contact6HZ0980575-112-NC1 Name Plate6JC6380575-1131 Tyco Relay'sTycoRelayVF7-41F1180130-125 Relay SocketVCF7-100080130-135 Terminal 6-10280755-480130-142 Terminal 12-10280756-480130-152 Amperite Time Delay Relay12 DSPDT5SC80130-111 WaytekFuse Panel4606080130-161 Terminal Strip 10 4736080575-109-101 Terminal Strip 12 4731280575-1091 Cat Engine W iring BOMH ours0000+-+-Push/PullPush/PullPush/Pull+ StartACCGlowOffIgn+-+-+-+-1234 56 789101112 Main Power - WhiteIgnition On - RedGlow Plug - GreenStart - BlackHi-Low - YellowDrive Lights - BlueNot Used - BrownOil Pressure - BrownLow Hydraulic - GreenWater Temp - RedWater Level - YellowWiper (Optional)Heater (Optional)

5 12333489910576666 Tucker #Qty1 Key Sw itch956-9100 CH 80130-3612 Hour Meter040022 GBI80575-1313 Push-Pull50001801323 Way tek4 Fuse Panel4606080130-1615 Terminal Strip 12 4731280575-11016 12v LED4766280130-347 Wiper Sw itchOption81995-0318 Wiper MotorOption81995-061 Wiper ArmOption81995-021 Wiper BladeOption81995-0719 Work Light81985-01210 Cab HeaterOption81995-15111 4 Wire 120 Ohn Resistor Assy81973204 Cat/Perkins Tier II Engine Dash Wiring BOMWork LightsDrive LightsHi-Low SpeedWiper(Option)Oil PressureWater TempLow HydraulicLow Water5 Amp20 Amp20 Amp20 Amp20 Amp20 AmpStarting Serial #06316+-+-+-+-Hydraulic WaterOil Pres TempDashClosedGround Stud116-86-86-83/4 #14 Black82"14" Ext#14 Black66"11-3/4" Ext#12 White86"13" Ext#10 Red62"9" Ext#14 Red80"12- Ext#14 Red63"12- Ext#14 Gray66"11- Ext#18 Brown78"12- Ext#18 Blue98"9- Ext#18 Blue96-1/2"8-1/2 ExtGlow PlugTerminal IFuel LiftTerminal 7 Fuel ThermostatTerminal 744" 3 " #10 Red#14 RedFuel ThermostatGlow Plug2- 1/21/21/45" GrayBlackFuel Pump1/21/21/45" 2- 1/42" 21" BU AlarmPreco Model 6003 Tucker # 8012514- BlackRedFuel Lift4" 4" High/LowGround toEngine10 HS10 HSBlueBlueNeutral StartSunstrand # 80020S40 Tucker # 80203-07#12 Black14"6- HSHS#12 Yellow#12 Black14"High/Low Speed SelectorHydraForce SV08-40-6T-12 DSTucker # 802021/21/21/21/21/21/211- 10 HS10 HS#12 White#12 WhiteBU AlarmSwitchHobbs # 76575 4 N/OTucker # 80604#18

6 Brown1/21/21/27" 64" 10 HSHS#12 White82"Starting Serial #063163/8 HSHS6-8 Oil PressureTerminal 9BU Alarm Fuse6-8 Fuel PumpTerminal 56-8 Neutral StartTerminal EFuel PumpFuel Lift6-8 Neutral StartTerminal 16-8 High/LowTerminal G#12 Yellow100"11- Ext1/4**6-83/4 9- 3 9- 3/8"1/4 HS1/4 HS5/16 HS5/16#8 Red#12 Red#10 Red#8 Black#10 Red28"1- Ext#8 Red31"5- Ext#12 Red33- 8- Ext#8 Black42"11- ExtMain PowerStart SignalChargingFrom BreakerStarter Terminal2 Fuse BlockGroundStarter / Charging Wire Assembly81974-W2224 6-8#12 Blue255 9" Ext#12 BlueDrive Lights Terminal FDrive LightsStarting Serial #06316HS5/16#10 CNONC3/4 3- .3501/23/412"1/2 12"3/8"#14 Red10 HS6-86-86-86-8#18 Red25- 14 Ext#18 Gray32"15- Ext#18 Yellow33- 17" Ext#14 Red36"18" Ext#18 Black24"7-1/4" Ext#18 Black15"4-1/2" Ext#18 Black#18 Red6-8 HS6-8 HSWaterTempWaterLevelWater TempTerminal 10 WaterLevelTerminal 11 AlternatorTerminal CWaterLevelAlternatorExciteWaterTemp SwitchMurphy # TSB-R220F/104C-1/2 Tucker # 80130-29 WaterLevelTerminal 5 Starting Serial #0631634211243 GrayBlackYellowTo Water Level SwitchKohler # 273404 Tucker # 80575-576-83/8" Synflex83"#18 Black97"#18 Green103"BlackGreen Ground TerminalHydraulicOil LevelTerminal 8 HydraulicOil LevelSensorStarting Serial #06316