Fisher Snow Plow Troubleshooting Guide⁚ A Comprehensive Overview
This guide provides a structured approach to diagnosing and resolving common Fisher snow plow issues. From electrical system checks to hydraulic and mechanical component troubleshooting, we offer step-by-step solutions. Learn how to identify problems, utilize online resources, and perform preventative maintenance for optimal plow performance and longevity. Addressing problems promptly ensures safe and efficient snow removal.
Identifying Common Problems
Before diving into complex diagnostics, systematically identify the specific problem with your Fisher snow plow. Is the plow completely unresponsive, or are certain functions malfunctioning? Note the exact symptoms⁚ Does the plow fail to engage, does it only partially function (e.g., angle but not lift), or does it exhibit erratic behavior? Observe the control unit’s lights and indicators for any flashing patterns which might indicate specific faults. Listen for unusual noises emanating from the plow’s motor or hydraulic system – grinding, whining, or clicking sounds might point to mechanical issues. Check for any obvious physical damage to the plow’s wiring, connections, or mechanical components. A visual inspection often reveals loose connections, broken wires, or damaged parts. Documenting the observed symptoms is crucial for effective troubleshooting. This detailed description helps narrow down the potential causes and guides your next steps in the troubleshooting process, ensuring a more efficient repair.
Electrical System Diagnostics⁚ Power and Ground Checks
Begin your electrical troubleshooting by verifying sufficient power supply to the plow. Use a multimeter to check the voltage at the battery terminals; it should match the plow’s voltage rating (typically 12V). Inspect all wiring connections for corrosion, looseness, or damage. Pay close attention to the main power cable connecting the truck’s electrical system to the plow. Ensure that all ground connections are clean and secure. A poor ground connection can cause erratic behavior or complete failure. Trace the wiring harness from the control unit to the plow’s motor and solenoid, checking for any breaks, shorts, or loose connections along the way. If any suspect sections are found, carefully examine the wiring for damage and use appropriate techniques to repair or replace as needed. A visual inspection of fuses and circuit breakers is also vital. A blown fuse or tripped breaker indicates a short circuit or overload somewhere in the system. Remember to replace a blown fuse with one of the correct amperage rating. These steps ensure a solid power and ground connection, eliminating common electrical issues before progressing to more complex diagnostics.
Troubleshooting the Control Unit⁚ Lights, Flashing Indicators, and Non-Functionality
The control unit is the brain of your Fisher snow plow, and its malfunction can prevent operation. Begin by checking the indicator lights. A slow flashing red light often indicates a problem, as noted in various online forums and Fisher’s own troubleshooting videos. Consult your owner’s manual for specific light codes and their meanings. If the control unit is completely unresponsive, check the fuses and power connections. Loose connections or blown fuses are common culprits. Ensure the control unit is securely mounted and that no wires are pinched or damaged. If the lights work but the plow doesn’t respond, there may be an issue with the internal circuitry of the control unit or a problem with the wiring harness connecting it to the plow. Inspect the wiring harness for damage; look for broken wires, short circuits or loose connections. Use a multimeter to test the voltage and continuity of the wires to ensure they’re carrying power correctly. If the problem persists after checking the wiring, the control unit may need repair or replacement. Consider contacting a qualified technician or Fisher’s customer support for further assistance, referencing any error codes displayed on the control unit.
Hydraulic System Issues⁚ Pump, Solenoid, and Valve Problems
The hydraulic system powers the Fisher snow plow’s lifting and angling functions. Problems in this system often manifest as slow or unresponsive blade movement. Start by checking the hydraulic fluid level. Low fluid can significantly reduce performance. Inspect the hydraulic pump for leaks or damage. A faulty pump will fail to generate sufficient pressure. Listen for unusual noises during operation; whining or grinding indicates potential pump problems. Next, examine the hydraulic solenoid. This component controls the flow of hydraulic fluid. A malfunctioning solenoid will prevent the plow from responding to control commands. Test the solenoid’s electrical connections and, if possible, measure the voltage across its terminals. If no voltage is present, trace the wiring back to the control unit. Finally, inspect the hydraulic valves. These valves direct the fluid flow to lift or angle the blade. A stuck or damaged valve will restrict or prevent movement in one or both directions. You might need specialized tools and knowledge to diagnose valve problems definitively. If you lack the necessary expertise, consult a qualified hydraulics technician to diagnose and repair any problems within the hydraulic system; this is crucial for safe and effective operation.
Addressing Mechanical Problems⁚ Blade Movement and Alignment
Mechanical issues can hinder the smooth operation of your Fisher snow plow. Problems with blade movement often stem from worn or damaged components within the plow’s linkage system. Inspect the lift and angle cylinders for leaks or damage. These cylinders are responsible for raising and angling the blade. A leak will reduce the effectiveness of the hydraulic system. Check for any binding or stiffness in the linkages. Grease all moving parts to ensure smooth operation. Binding can result from corrosion or lack of lubrication. Verify that all pins and bolts are securely fastened. Loose connections can cause instability and unpredictable blade movement. Pay close attention to the blade’s alignment. An improperly aligned blade can reduce efficiency and cause uneven snow removal. Check for any bending or warping of the blade itself. Severe damage might require blade replacement. Examine the wear on the cutting edge. A worn cutting edge will significantly reduce the plow’s effectiveness and could lead to increased stress on other components. Regular inspection and maintenance, including lubrication and tightening of connections, will prevent many of these mechanical problems from arising.
Pinpointing Wiring Faults⁚ Loose Connections, Damaged Cables, and Short Circuits
Electrical problems are a common source of Fisher snow plow malfunctions. Start your diagnostic process by carefully inspecting all wiring connections. Loose or corroded connections are frequent culprits. Pay close attention to the connections at the plow’s control unit, the solenoid, and the motor. Use a multimeter to test for continuity and voltage at each connection point. Look for any signs of damage to the wiring harness itself. Chafing, cuts, or exposed wires are potential hazards that can lead to short circuits or complete power loss. Damaged cables should be repaired or replaced immediately. Short circuits can occur when wires come into contact with each other or with grounded metal parts. This often results in blown fuses or damaged components. Inspect the wiring harness carefully for any evidence of rubbing against the plow’s frame or other metal components. Use protective sleeves or conduit where necessary to prevent future damage. A visual inspection should be followed by a thorough continuity test using a multimeter. This will help identify any breaks in the wiring. Remember to disconnect the battery before performing any electrical work on your snow plow to avoid accidental shocks.
Troubleshooting the Plow’s Motor⁚ Noisy Operation, Lack of Power, and Overheating
The plow’s motor is a crucial component, and various issues can impact its performance. Noisy operation can indicate several problems, such as worn bearings, a failing gear, or the presence of debris within the motor housing. A thorough inspection is necessary to identify the specific cause. Lack of power can stem from low voltage, a faulty motor winding, or an obstructed hydraulic system preventing proper blade movement. Check voltage supply to the motor; insufficient power directly impacts its ability to operate correctly. Overheating is a serious problem and may point to either inadequate lubrication, an overloaded motor due to excessive snow or obstructions, or internal motor damage. Regular lubrication is essential, and addressing the root cause of an overload is vital. Before attempting any repairs, always disconnect the power supply to prevent accidental shocks. Consult your owner’s manual for specific details regarding motor maintenance and troubleshooting. A visual inspection should be done first, followed by checks of voltage supply. If the problem persists, professional assistance from a qualified mechanic may be needed.
Utilizing Fisher’s Online Resources⁚ Manuals, Diagrams, and Support
Fisher offers a wealth of online resources to assist with troubleshooting and maintenance. Their publications library is a valuable starting point, providing access to owner’s manuals, mechanics’ guides, parts diagrams, and diagnostic information specific to your Fisher snow plow model. These documents often include detailed schematics, wiring diagrams, and troubleshooting flowcharts, guiding you through systematic checks to pinpoint the source of problems. Beyond the manuals, Fisher’s website may also offer video tutorials and FAQs addressing common issues. These videos often demonstrate practical troubleshooting techniques, showing you how to perform basic checks and inspections. The website might also feature a searchable database of troubleshooting guides or a contact form for submitting questions directly to Fisher’s customer support team. Before contacting support, gather as much information as possible, including your plow’s model number and a detailed description of the problem, including any error codes displayed. Utilizing these resources effectively can significantly reduce downtime and save you time and effort in resolving issues.
Preventative Maintenance for Optimal Plow Performance
Regular preventative maintenance is crucial for maximizing the lifespan and efficiency of your Fisher snow plow. Before each snow season, conduct a thorough inspection of all components, paying close attention to wear and tear. Check hydraulic fluid levels and condition, ensuring they are clean and topped off to the correct level. Inspect all hoses and connections for leaks or damage, replacing any worn or compromised parts. Lubricate moving parts, such as hinges and joints, using appropriate lubricants. Examine the plow blade for any dents, cracks, or rust, repairing or replacing damaged sections as needed. Inspect the electrical system, checking wiring harnesses for any signs of fraying, corrosion, or loose connections. Ensure that all ground connections are clean and secure. Verify proper operation of lights and other electrical components. After each snow removal session, thoroughly clean the plow blade to remove accumulated salt, ice, and debris. Store the plow in a clean, dry location, protecting it from the elements to prevent corrosion and damage. Following these preventative maintenance practices will significantly extend the life of your Fisher snow plow and ensure its reliability when you need it most.