Case 850K Skid Steer: Troubleshooting the “No Can” Issue

[MikePhua]

The Case 850K skid steer is a powerful machine commonly used in construction and landscaping tasks. Known for its durability, ease of operation, and versatility, it is a key asset on many job sites. However, like all machinery, it can experience mechanical issues, some of which may be difficult to troubleshoot. One such issue is the "no can" problem, which can leave operators puzzled and frustrated. This article will delve into the possible causes of this issue, how to diagnose it, and provide solutions to get the machine back to work quickly.
Understanding the “No Can” Issue
The "no can" issue in the Case 850K typically refers to a situation where the machine will not start or operate, often indicated by the failure to engage certain system components such as the engine or hydraulic functions. This problem can be attributed to a variety of causes, ranging from electrical and fuel system issues to mechanical failures.
Common Causes of the "No Can" Problem
There are several potential causes that could result in the “no can” issue, and identifying the root cause is essential for efficient troubleshooting. Here are some of the most common causes:

1. Battery Issues: The most frequent culprit in "no can" situations is a weak or dead battery. The Case 850K’s engine and electrical system rely heavily on battery power, and if the battery is not providing enough voltage, the machine will fail to start.
   
2. Starter Motor Problems: If the battery is in good condition but the starter motor is faulty, the machine will also fail to start. A malfunctioning starter motor could result from wear and tear or internal damage.
   
3. Ignition System Malfunctions: Issues with the ignition system, such as faulty ignition switches, relays, or fuses, can also result in the "no can" issue. These components are critical in sending the electrical signals that start the engine.
   
4. Fuel System Problems: Another common cause of starting failure is a problem with the fuel system. Issues like clogged fuel filters, a malfunctioning fuel pump, or fuel line blockages can prevent proper fuel flow to the engine, leading to starting issues.
   
5. Hydraulic System Failure: If the machine is not responding despite the engine turning over, the issue may lie in the hydraulic system. Low hydraulic fluid levels, a faulty pump, or issues with hydraulic lines or valves can cause the machine to fail to perform its usual functions.
   
6. Electrical Wiring Issues: The electrical wiring in the Case 850K is complex, and a loose or damaged wire can prevent the machine from starting. Corrosion, wear, and poor connections can disrupt the flow of electricity, causing the “no can” problem.
   
7. Safety Switches or Sensors: Many skid steers, including the Case 850K, are equipped with safety switches and sensors that prevent the machine from starting under unsafe conditions. A faulty safety switch or sensor can falsely prevent the machine from starting.
   
8. Overheating Protection: If the machine has been running for an extended period, it may enter a protective shutdown mode due to overheating. The cooling system or a faulty thermostat could be to blame for this issue.
   

Diagnosing the "No Can" Problem
Diagnosing the “no can” issue on a Case 850K requires a systematic approach to rule out potential causes. Below are the steps to effectively diagnose and fix the problem:

1. Check the Battery:
   • Start by inspecting the battery. Ensure it is properly charged and that there are no signs of corrosion around the terminals. Clean the terminals if necessary and ensure a tight connection.
     
   • Test the voltage using a multimeter. A fully charged battery should read between 12.5 to 13.5 volts. If the battery is below 12 volts, it may need to be replaced.
     
2. Inspect the Starter Motor:
   • If the battery is good, check the starter motor for faults. Listen for any clicking sounds when you try to start the machine. A clicking sound often indicates a problem with the starter.
     
   • If the starter motor is not turning, you can check the starter relay and wiring for any loose connections or damage.
     
3. Examine the Ignition System:
   • Check the ignition switch, relays, and fuses to ensure they are working correctly. Replace any blown fuses and ensure the ignition switch is functioning properly.
     
   • Test the starter solenoid to ensure it is receiving a signal when the ignition is turned on. A malfunctioning solenoid can prevent the engine from cranking.
     
4. Inspect the Fuel System:
   • Verify that there is fuel in the tank and that the fuel lines are free of blockages. Clogged fuel filters are a common cause of starting issues and should be replaced regularly.
     
   • Check the fuel pump to ensure it is working. You can test the pump by listening for it to engage when the key is turned to the “on” position.
     
5. Check the Hydraulic System:
   • If the engine runs but the hydraulic system does not engage, check the hydraulic fluid levels and top them up if necessary.
     
   • Inspect the hydraulic pump and check for any issues with the pressure relief valve or any blockages in the lines.
     
6. Inspect the Electrical System:
   • Check the wiring harnesses and connectors for any visible damage or corrosion. Look for any signs of fraying, burning, or wear that could be causing an electrical fault.
     
   • Test the fuses and relays in the electrical system to ensure they are working properly. A blown fuse can often be the cause of electrical failure.
     
7. Examine Safety Switches and Sensors:
   • Check any safety switches, such as those for the seat, transmission, or hydraulic system, to ensure they are functioning properly. If these switches are faulty, they can prevent the machine from starting.
     
   • Inspect the sensors to ensure they are not sending false signals that could prevent the engine from cranking.
     

Solutions and Fixes for the "No Can" Problem
Once you have diagnosed the issue, here are the recommended solutions for each possible cause:

1. Replace or Recharge the Battery:
   • If the battery is found to be weak, replace it with a new one that meets the specifications for the Case 850K. If the battery is simply discharged, recharge it fully before testing again.
     
2. Replace the Starter Motor or Relay:
   • If the starter motor is found to be faulty, it will need to be replaced. Ensure the new starter motor is compatible with the 850K model.
     
   • Check and replace any faulty relays, particularly the starter relay, which may be preventing the motor from engaging.
     
3. Fix Ignition System Issues:
   • Replace any blown fuses in the ignition circuit and verify that the ignition switch is functioning. If the starter solenoid is faulty, it will need to be replaced to restore the starting function.
     
4. Replace Fuel Filters or Clean Fuel Lines:
   • If the fuel filter is clogged, replace it with a new one. Clean the fuel lines to remove any blockages or contaminants. Ensure that the fuel pump is working properly and delivering fuel to the engine.
     
5. Repair Hydraulic System Components:
   • If low hydraulic fluid is the issue, top up the fluid and check for any leaks in the system. If the hydraulic pump or relief valve is malfunctioning, they may need to be repaired or replaced.
     
6. Fix Electrical Issues:
   • Replace damaged or corroded wiring and connectors. Ensure that the fuses and relays are in working condition. If any of the electrical components are faulty, they should be replaced.
     
7. Replace or Repair Safety Switches/Sensors:
   • Replace any malfunctioning safety switches or sensors that are preventing the machine from starting. Ensure the switches are properly calibrated and that they’re not being triggered falsely.
     

Preventative Maintenance Tips
Preventing the "no can" issue is possible with regular maintenance and care. Here are a few tips to keep your Case 850K in top condition:

1. Regularly Check Battery Voltage: Make it a habit to check the battery voltage and inspect the terminals for corrosion. Keeping the battery in good condition can prevent many starting issues.
   
2. Replace Fuel Filters: Regularly replace fuel filters to ensure proper fuel flow to the engine. A clogged filter can lead to fuel system issues.
   
3. Monitor Hydraulic Fluid Levels: Keep an eye on hydraulic fluid levels and check for leaks in the hydraulic system. Proper fluid levels ensure optimal performance.
   
4. Inspect Electrical Wiring: Periodically inspect the electrical wiring and connections for signs of wear or corrosion. Clean or replace any damaged components as needed.
   
5. Follow Manufacturer’s Maintenance Schedule: Adhere to the manufacturer’s recommended maintenance schedule for the Case 850K to prevent issues from developing.
   

Conclusion
The "no can" problem in a Case 850K skid steer can be frustrating, but with a systematic approach to troubleshooting and repair, it’s a problem that can be resolved efficiently. By understanding the common causes and following the steps for diagnosis and repair, operators can ensure their machine stays in good working order. Regular maintenance and attention to detail are key to preventing these issues from occurring and extending the lifespan of your skid steer.