DIAGNOSTIC TROUBLESHOOTING GUIDE Introduction The Curtis Snowplow family of products are built and tested for lasting performance. All snowplows are fully tested for electrical, hydraulic and lighting malfunctions prior to shipping. Any malfunction is corrected immediately at our facility to ensure that our customers receive a quality product that will last for years to come. As with any piece of equipment, rough service and harsh environments can lead to poor performance, necessitating repairs.
TABLE OF CONTENTS Reference Section Hydraulic Manifold Symbols Electrical System Symbols Sno-Pro 3000/Home-Pro Hydraulic Manifold Circuit Sno-Pro 2000/Trip Edge/Mach 1 Hydraulic Manifold Circuit Sno-Pro V-Plow W/SA Cylinders Hydraulic Manifold Circuit Electrical Plug Pin-Outs Electrical Plug Pin-Outs Continued Hydraulic Manifold Parts Breakdown Electric/Hydraulic Power Unit Parts Breakdown Notice & Warnings Diagnostic Method Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 Page 9 Page 10 Page 11-13
CURTIS SNOWPLOWS: MANIFOLD SYMBOLS Cross-Over Relief Valve Usage: Angle Circuits Flow Restrictor Usage: Lift & Jack Circuit 2/2 Way Solenoid Valve Usage: 1TBM2 Plow Float 1TBM2a Jack Retract Filter Screen Usage: All Circuits Check Valve Usage: Lift Circuit P 3/4 Way Solenoid Valve W/Tandem Center Usage: 1TBM1 Angle Valve 2/2 Way Solenoid Valve W/Adjustable Rate Usage: 1TBM2V V-Plow Float 3/4 Way Solenoid Valve W/Open Center Usage: 1TBM7 Plow Lift/Jack Extend Valve 3/4 Way Solenoid Valve Usage: 1TBM
SNO-PRO / HOME-PRO: ELECTRICAL SYMBOLS & DIAGRAMS Pump Motor Solenoid Curtis Part #: 1TBP61A 15a Fuse Switch Panel Control Kit Curtis Part #: 1TBP60A Lift/Float Switch Diode Jack Switch Curtis Part #: 1TBP100 Headlight Switch Chassis Ground Angle Switch Note: Lift/Float Switch, Angle Switch & A-Frame Jack Switch all have bridged center terminals conducting power to both poles of the switch.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD.
SNO-PRO TRIP EDGE w/GAS SPRING JACK & SNO-PRO 2000 MANIFOLD CIRCUIT - HYDRAULIC "A" Port Right Cylinder "B" Port Left Cylinder "H" Port Lift Cylinder Cross-Over Relief For Right Cylinder Check Valve: 1TBM5 Cross-Over Relief For Left Cylinder Float Valve: 1TBM2 Angle Valve: 1TBM1 Lift Valve: 1TBM3 P Pressure Supply From Power Unit T Fluid Return to Reservoir ® 4
SNO-PRO/ V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: MANIFOLD CIRCUIT - HYDRAULIC Cross-Over Relief For Left Wing Adjustable Float Valve P/N: 1TBM2V Cross-Over Relief For Right Wing Extend/Retract Valve For Left Wing P/N: 1TBM1V Extend/Retract Valve For Right Wing P/N: 1TBM1V Lift Valve P/N: 1TBM3 P T ® 5
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD.JACK TROUBLESHOOTING GUIDE NOTICE Know your own abilities and mechanical skills. Some procedures in the following Troubleshooting Guide require a considerable mechanical aptitude. Use discretion and refer to an Authorized Curtis Dealer when needed. The following Guide has been developed to provide a step-by-step approach to Troubleshooting operational problems with your Sno-Pro/Home-Pro 3000 Snow Plow.
DIAGNOSTIC METHOD - FIND THE PROBLEM....FAST! System #1: Vehicle Electrical System: Related Components: Vehicle Side Wiring Harness Battery Lead #4 Gauge Motor Solenoid In-Cab Control Headlight Switch Headlight Adapter The starting point for this method is the Vehicle Side Electrical System. The chart below details all of the Plug Pinouts for the Vehicle Side Harness. The very first step in this process is to verify a PROPER INSTALLATION i.e.
DIAGNOSTIC METHOD - FIND THE PROBLEM....FAST! If all functions test correctly but no power is being sent to the 12vdc Hi-Amp (Pin #2), test the Brown Wire at the Pump Solenoid. To do this, activate each function (Lift, Left, Right) and test the Brown Wire connection at the Solenoid with the Test Light. If no power is present, the Harness may be faulty. If power is present but the Solenoid is not operating, double check the Battery Cable connections as well as the mounting surface.
DIAGNOSTIC METHOD - FIND THE PROBLEM....FAST! Testing Plow Functions: Disconnect the Packard Connector for the function to be tested. The Table below indicates the Color Code for each function. Connect the alligator clip of the test light to a ground source (the stud on the back of the Pump Assembly). Insert the test probe into the colored side of the Packard Connector (the Orange Wire side is used for a ground connection) and activate the function.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: ANGLE LEFT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Angle Left' position energizes the Blue 'Angle Left' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: ANGLE LEFT FUNCTION - HYDRAULIC "A" Port F.) "B" Port E.) Right Cylinder Left Cylinder What Happens: A.) Left Angle Function is Activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) Blue Wire shifts 'Angle Valve' to Angle Left position. E.) Pump pressure is supplied to 'A' Port extending Right Angle Cylinder. F.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: ANGLE RIGHT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Angle Right' position energizes the White 'Angle Right' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: ANGLE RIGHT FUNCTION - HYDRAULIC "A" Port "B" Port F.) Right E.) Cylinder Left Cylinder What Happens: A.) Right Angle Function is Activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) White Wire shifts 'Angle Valve' to Angle Right position. E.) Pump pressure is supplied to 'B' Port extending Left Angle Cylinder. F.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: AUTOMATIC JACK RETRACT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Plow Lift' position energizes the Red 'Plow Lift' Wire, the Brown 'Solenoid' Wire, and the Pink/Black 'Jack Retract' Wire. C.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: JACK RETRACT USING LIFT FUCTION - HYDRAULIC "A" Port Right Cylinder What Happens: A.) Lift Function is Activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) Red Wire shifts 'Plow Lift/Jack Extend' Valve to Lift function. E.) Pink/Black Wire shifts Jack Retract Valve. F.) Pump pressure is supplied to 'H' Port extending Lift Cylinder. G.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: PLOW FLOAT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Plow Float' position energizes the Green 'Float' Wire. C.) The Green 'Float' Wire sends 12vdc power to the Float Valve Coil. D.) The A-Frame Jack Switch is energized any time 'Float' is activated. E.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: PLOW FLOAT FUNCTION - HYDRAULIC "A" Port Right Cylinder What Happens: A.) Lift Function is activated with Controller. B.) Green Wire shifts 'Float' Valve to Open position. C.) Fluid from Lift Cylinder returns to Reservoir through Flow Restrictor slowing retraction. "B" Port Left Cylinder "X" Port Jack Cylinder "H" Port Lift Cylinder C.) Cross-Over Relief For Left Cylinder Cross-Over Relief For Right Cylinder Jack Retract Valve Float B.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: JACK EXTEND FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Plow Float' position energizes the Green 'Plow Float' Wire which, in turn, sends power to the A-Frame Jack Switch. C.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: JACK EXTEND FUNCTION - HYDRAULIC "A" Port Right Cylinder What Happens: A.) Lift Function is activated with Controller. B.) Green Wire shifts 'Float' Valve to Open position and powers A-Frame Jack Switch. C.) Fluid from Lift Cylinder returns to Reservoir. D.) Jack Extend function is activated using A-Frame Jack Switch. E.) Blue/Black Wire shifts 'Plow Lift/Jack Extend' Valve to Jack Extend position. F.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: JACK RETRACT FUNCTION - ELECTRICAL USING A-FRAME JACK SWITCH What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Plow Float' position energizes the Green 'Plow Float' Wire which, in turn, sends power to the A-Frame Jack Switch. C.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: JACK RETRACT FUNCTION - HYDRAULIC USING A-FRAME JACK SWITCH "A" Port Right Cylinder What Happens: A.) Lift Function is activated with Controller. B.) Green Wire shifts 'Float' Valve to Open position and powers A-Frame Jack Switch. C.) Fluid from Lift Cylinder returns to Reservoir through the 'H' Port. D.) Jack Retract function is activated using A-Frame Jack Switch. E.) Pink/Black Wire shifts 'Jack Retract' Valve to Jack Extend position. F.
SNO-PRO / HOME-PRO / TRIP-EDGE w/HYD. JACK: ELECTRICAL/HYDRAULIC POWER UNIT W/MANIFOLD MANIFOLD END VIEW Coil ITBM4 Lift Hose (ITBP98B) Crossover Relief Jack Hose (ITBP98A) Left Angle Hose (ITBP98B) Motor (12VDC) Ground Reservior Lift Jack Extend Float Positive Right Angle Hose (ITBP98C) D IFOL MAN Jack Retract B) BP98 SE (IT HO LIFT A) BP98 SE (IT HO JACK Angle Right Angle Left 8C) TBP9 SE (I O H B) BP98 NGLE E (IT RT. A S O H GLE L.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: ANGLE LEFT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Angle Left' position energizes the Blue 'Angle Left' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: ANGLE LEFT FUNCTION - HYDRAULIC "A" Port Port E.) Right F.) Left"B"Cylinder Cylinder What Happens: A.) Left Angle Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) Blue Wire shifts 'Angle Valve' to Angle Left position. E.) Pump pressure is supplied to 'A' Port extending Right Angle Cylinder. F.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: ANGLE RIGHT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Angle Right' position energizes the White 'Angle Right' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: ANGLE RIGHT FUNCTION - HYDRAULIC "A" Port Port F.) Right E.) Left"B"Cylinder Cylinder What Happens: A.) Right Angle Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) White Wire shifts 'Angle Valve' to Angle Right position. E.) Pump pressure is supplied to 'B' Port extending Left Angle Cylinder. F.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: PLOW LIFT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Plow Lift' position energizes the Red 'Lift' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: PLOW LIFT FUNCTION - HYDRAULIC "A" Port Right Cylinder "B" Port Left Cylinder What Happens: A.) Lift Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) Red Wire shifts 'Plow Lift' Valve from static position. E.) Pump pressure is supplied to 'H' Port extending Lift Cylinder. Port E.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: PLOW FLOAT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. If equipped with a Joystick or Touch Pad, the Controller Power Switch must be in the 'On' position. B.) Moving the Controller to 'Plow Float' position energizes the Green 'Float' Wire. C.) The Green 'Float' Wire sends v power to the Float Valve Coil. D.) See Next Page for Hydraulic Flow Chart. Source A.
SNO-PRO / HOME-PRO / TRIP-EDGE w/GAS SPRING JACK: PLOW FLOAT FUNCTION - HYDRAULIC "A" Port Right Cylinder "B" Port Left Cylinder What Happens: A.) Lift Function is activated with Controller. B.) Green Wire shifts 'Float' Valve to Open position. C.) Fluid from Lift Cylinder returns to Reservoir. Port C.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: LEFT ANGLE FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Left Angle' button energizes the White 'W2 Extend' Wire, Blue/Black 'W1 Retract' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: LEFT ANGLE FUNCTION - HYDRAULIC What Happens: A.) Left Angle Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) White Wire shifts 'W2 Angle Valve' to Wing Extend Position. E.) Pump pressure is supplied to 'W1' Port extending Right Angle Cylinder. F.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: RIGHT ANGLE FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Right Angle' button energizes the Blue 'W1 Extend' Wire, White/Black 'W2 Retract' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: RIGHT ANGLE FUNCTION - HYDRAULIC What Happens: A.) Right Angle Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) Blue Wire shifts 'W1 Angle Valve' to Wing Extend Position. E.) Pump pressure is supplied to 'W1' Port extending Right Angle Cylinder. F.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: LEFT WING EXTEND FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Left Extend' button energizes the Blue 'W1 Extend' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: LEFT WING EXTEND FUNCTION - HYDRAULIC What Happens: A.) Left Wing Extend Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) Blue Wire shifts 'W1 Angle Valve' to Wing Extend Position. E.) Pump pressure is supplied to 'W1' Port extending Left Angle Cylinder. W1 E.) W2 L D.) P T C.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: RIGHT WING EXTEND FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Right Extend' button energizes the White 'W2 Extend' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: RIGHT WING EXTEND FUNCTION - HYDRAULIC What Happens: A.) Right Wing Extend Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) White Wire shifts 'W2 Angle Valve' to Wing Extend Position. E.) Pump pressure is supplied to 'W2' Port extending Right Angle Cylinder. W1 W2 E.) L D.) P T C.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: LEFT WING RETRACT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Left Retract' button energizes the Blue/Black 'W1 Retract' Wire. C.) The Blue/Black 'W1 Retract' Wire sends 12vdc power to the W1 Retract Valve Coil. D.) See Next Page for Hydraulic Flow Chart. 15a Fuse B.) BLACK Source A.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: LEFT WING RETRACT FUNCTION - HYDRAULIC What Happens: A.) Left Wing Retract Function is activated with Controller. B.) Blue/Black Wire shifts 'W1 Angle Valve' to Wing Retract Position. C.) Fluid is returned from 'W1 Port' to Reservoir. W1 W2 L C.) B.) P T C.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: RIGHT WING RETRACT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Right Retract' button energizes the White/Black 'W2 Retract' Wire. C.) The White/Black 'W2 Retract' Wire sends 12vdc power to the Retract Valve Coil. D.) See Next Page for Hydraulic Flow Chart. 15a Fuse B.) BLACK Source A.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: RIGHT WING RETRACT FUNCTION - HYDRAULIC What Happens: A.) Right Wing Retract Function is activated with Controller. B.) White/Black Wire shifts 'W2 Angle Valve' to Wing Retract Position. C.) Fluid is returned from 'W2' Port to Reservoir. W1 W2 C.) L B.) P T C.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: PLOW LIFT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Plow Lift' Button energizes the Red 'Lift' Wire and the Brown 'Solenoid' Wire. C.) The Brown 'Solenoid' Wire closes the Solenoid Contacts and sends 12vdc power to the Pump Motor. D.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: PLOW LIFT FUNCTION - HYDRAULIC What Happens: A.) Plow Lift Function is activated with Controller. B.) Brown Wire activates Motor Solenoid. C.) 12vdc Motor spins Pump developing pressure. D.) Red Wire shifts 'Lift' Valve to 'Open' position. E.) Pump pressure is supplied to 'L' Port extending Lift Cylinder and raising Plow. W1 W2 L E.) D.) P T C.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: PLOW FLOAT FUNCTION - ELECTRICAL What Happens: A.) Ignition 'On' energizes the Controller Power source sending 12vdc into the Controller. Touch Pad Power Switch must be in the 'On' position. B.) Pushing the 'Plow Float' Button energizes the Green 'Float' Wire. C.) The Green 'Plow Float' Wire sends 12vdc power to the Plow Float Valve Coil. D.) See Next Page for Hydraulic Flow Chart. 15a Fuse B.) BLACK Source A.
SNO-PRO V-PLOW w/SINGLE ACTING CYLINDERS & SPRING RETURN: PLOW FLOAT FUNCTION - HYDRAULIC What Happens: A.) Plow Float Function is activated with Controller. B.) Green Wire shifts Float Valve to 'Open' position. C.) Fluid returns from 'L' Port back to Reservoir. W1 W2 L C.) B.) P T C.
POLY TRIP ED GE V-PLOW ELECTRIC/HYDRAULIC POWER UNIT WITH MANIFOLD 3.1 GPM Pump ITBM35 Motor ITBM8 Ground Positive Hose Adapter (5 Places) ITBP200 Coil (5 Places) ITBM4A Reservior Tank ITBM36 ITBM3 Reservoir Cap Drive r ExtesnSide d Lift Ho se Driv Pass.
CURTIS UNIVERSAL VEHICLE SIDE HARNESS SCHEMATIC P/N: 1UHT ® 52
CURTIS UNIVERSAL PLOW SIDE HARNESS SCHEMATIC P/N: 1UHP ® 53
CURTIS UNIVERSAL VEHICLE SIDE HARNESS LAYOUT P/N: 1UHT ® 54
CURTIS UNIVERSAL PLOW SIDE HARNESS LAYOUT P/N: 1UHP ® 55
CURTIS PLOW SIDE HARNESS JACK ADAPTER FOR HYDRAULIC JACK EQUIPPED SNOWPLOWS P/N: 1UHJA ® 56
CURTIS PLOW SIDE HARNESS V-PLOW ADAPTER P/N: 1UHVA ® 57
CURTIS VEHICLE SIDE HARNESS RELAY CONNECTOR CONNECTIONS ® 58
TROUBLESHOOTING INDEX - BY PROBLEM Section A: Hydraulic System 1 2 3 4 5 6 7 8 9 10 Section C: Lighting Electrical System Motor runs, but no Plow functions. 1 Motor runs, but all functions are slow. 2 Motor runs, but Blade raises slowly or not at all. 3 Motor runs, but Blade does not lower. 4 Blade lowers in neutral position. 5 Blade will not angle in one or both directions, lift and lower 6 functions are Ok. 7 Blade will not remain angled. 8 Motor runs, but Jack Leg will not extend.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section A. Plow Hydraulic System Symptom Possible Cause 1. Motor runs but no Plow Solenoid Coils not receiving function(s). voltage Inadequate Pump pressure 2. Motor runs but all functions are slow. Inadequate Pump pressure Inadequate Pump flow Insufficient voltage output from vehicle 3. Motor runs but Blade raises slowly or does not raise.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section A. Plow Hydraulic System Symptom Possible Cause Remedy 3. Motor runs but Blade raises slowly or does not raise (continued). Lower solenoid valve contaminated Remove A-Frame cover and locate Lower valve. Remove coil retaining nut from valve and slide the coil off of the valve stem. Unscrew valve from manifold block and inspect for contamination. Clean valve with mineral spirits and blow dry with compressed air.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section A. Plow Hydraulic System Symptom Possible Cause Remedy 7. Blade will not remain angled. Cross port relief valve(s) contaminated or damaged. Use an allen key to remove the cross port relief plugs. Remove ball and spring from within cavity and inspect for any damage or wear, replace if necessary. Inspect bottom of cavity surface and remove any contamination, clean with mineral spirits and re-assemble. 8.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section A. Plow Hydraulic System Symptom 10. Jack does not retract (continued). Possible Cause Remedy Low or no voltage to 'Lift' solenoid coil. Check for voltage at lift coil with 12v test light or multimeter using procedure described in Section A, #6. If voltage is present, see next step. Jack Retract solenoid valve contaminated. Remove A-Frame cover. Locate 'Jack Retract' solenoid coil (pp. 12,16 for detail).
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section B. Plow Electrical System Symptom 1. Pump motor will not run (continued). Possible Cause Remedy Check for voltage at Main Power Connector pins 1 and 2 with ignition switch ON and LIFT, RIGHT or LEFT function is activated. If voltage is present, remove pump cover and check for voltage at pump with ignition switch on and LIFT, RIGHT or LEFT function is activated, if voltage is present, pump has failed or pump has seized.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section B. Plow Electrical System Symptom Possible Cause Remedy 1. Pump motor will not run (continued). Check for voltage to Brown If voltage is not present on Brown wire terminal and ground with wire at control switches with a function activated. Check for disconnected wires or broken wires, ignition switch ON and a or failed switch. LIFT, RIGHT or LEFT function is activated. 2. Pump motor runs continually.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section B. Plow Electrical System Symptom 4. Plow will not lower (continued). Possible Cause With ignition switch On and Float function activated check for voltage between the Green and Orange ground wire on valve body power connector. Remedy If voltage is present, valve coil or solenoid valve has failed or Battery is weak or defective. If voltage is not present go to next test.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section B. Plow Electrical System Symptom 6. Plow will not angle Left (continued). Possible Cause With ignition switch ON and Left function activated check for voltage between Blue and Orange ground wire on valve body power connector. Remedy If voltage is present, valve coil or solenoid valve has failed or Battery is weak or defective. If voltage is not present go to next test.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section B. Plow Electrical System Symptom 9. Plow will not remain in Float. 10. Plow Jack will not Extend. Possible Cause Remedy Check Raise and Lower Switch for worn out Detent position by testing for maintained voltage between the Green and Orange ground wires. Check Joystick control for worn out Detent position or bent switch actuator by testing for maintained voltage between the Green and Orange ground wires.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section B. Plow Electrical System Symptom 11. Plow Jack will not Retract. 12. Plow Jack will not Retract when Plow is raised. Possible Cause Remedy With ignition switch On and Float function activated check Green wire on Jack Switch for voltage. If voltage is present go to next test. If voltage is not present, check for voltage between the Green and Orange ground wire on valve body power connector.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section B. Plow Electrical System Symptom Possible Cause Remedy 14. Battery goes dead when vehicle is OFF. Disconnect switch control or joystick control at the White 9-pin connector in cab with ignition switch Off check for voltage between the Black and Orange ground. If voltage is present, move black wire to a switched circuit that turns off with the vehicles ignition. 15. Battery goes dead when vehicle is running.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section C. Plow Lighting Electrical System Symptom Possible Cause Remedy 1. No lights on vehicle or Plow (continued). (Floating ground or Hot ground) If voltage is not present, check for disconnected wires or broken With headlight switch On check wires. for voltage to Light Green and (12 Volt +) for Low beam and Yellow and (12 Volt +) for High beam. 2. Plow lights will not come On. Check electrical connections.
CURTIS SNO-PRO 3000 / HOME-PRO / TRIP-EDGE w/HYD. JACK TROUBLESHOOTING GUIDE Section C. Plow Lighting Electrical System Symptom Possible Cause Remedy 6. Headlight fuse blows after installing new Plow Lights. Remove Plow headlight bulb Replace with original Curtis Snow Plow lights. and check that there is NO wire from 3 prong head light connector to ground. 7. Plow parking & directional lights are dim and/or flicker. Check Plow lights for good ground. 8. Turn signals will not function. 9.