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How to Troubleshoot Fisher Snow Plows
How to Troubleshoot Fisher Snow Plows. Fisher Engineering has been manufacturing snowplows for more than 60 years. As with most industrial machinery, wear and tear can create problems that are relatively easy to diagnose. Try a few troubleshooting steps before consulting a repairman.
Fisher Engineering has been manufacturing snowplows for more than 60 years. As with most industrial machinery, wear and tear can create problems that are relatively easy to diagnose. Try a few troubleshooting steps before consulting a repairman.
Replace fuses if the control power indicator does not come on and there is no power to the unit. There are two automotive-style fuses on the vehicle control harness. One fuse operates the snow plow park/turn lamps; the other is for the snow plow control power. The replacement fuses should have the same amperage rating. A fuse with a higher rating could damage the system.
Remove any excess snow and/or ice from the blade if the snow plow won't raise or only raises slowly or partially. Check for sufficient hydraulic fluid in the reservoir. Fill the reservoir, if necessary. Always use a Fisher recommended hydraulic fluid.
Make sure the snow plow's battery unit has sufficient charge and is free from corrosion or dirt if the plow's angles, or wings, move slowly or partially. Check the charging system and replace the battery, if necessary.
Inspect all the hydraulic fittings and hoses for damage and to ensure that they are secure if the snow plow lowers by itself or will not stay in the raised position. Tighten or replace fittings and hoses as necessary.
Check that the vehicle's lighting harnesses are securely connected if the snow plow headlights operate irregularly or not at all. Inspect for burned out bulbs or corroded light sockets. Replace the bulbs and sockets, if necessary.
Make sure the snow plow control harness is securely connected if the motor does not run.
Tips & Warnings
Do not mix different types of hydraulic fluid.
Lower the blade when the vehicle is parked.
Transport speed should not exceed 45 mph. Plowing speed should not exceed 10 mph.
If you locate a hydraulic leak in a hose or fitting, do not touch the fluid with your bare hands. Always wear gloves and safety eye wear when maintaining or inspecting the plow unit.
Always disconnect the battery before removing or replacing any electrical components. Batteries contain sulfuric acid and can burn skin, eyes and clothing.
