Wacker Neuson BS 68-4 Trench Rammers

The Wacker Neuson BS 68-4 Trench Rammer is a robust and popular model for compaction work. However, like all machines, it can face certain issues during use. Below are some common problems and their solutions:

1. Engine Not Starting

  • Problem: The engine does not start or struggles to start.
  • Possible Causes:
    • Fuel Issues: The fuel tank may be empty, or old fuel might be causing blockages.
    • Faulty Spark Plug: The spark plug might be dirty or damaged.
    • Clogged Fuel Filter: A clogged fuel filter can restrict fuel flow to the engine.
    • Battery Problems (if applicable): Low or dead battery.
  • Solutions:
    • Check the fuel tank and refill it with fresh fuel.
    • Inspect and clean or replace the spark plug.
    • Replace or clean the fuel filter.
    • Test the battery (if applicable) and recharge or replace it if necessary.

2. Poor Compaction or Lack of Power

  • Problem: The rammer isn’t providing adequate compaction or is struggling to power through work.
  • Possible Causes:
    • Air Filter Blockage: A clogged air filter can affect the engine’s performance.
    • Fuel System Blockage: Dirt or debris in the carburettor or fuel lines may be limiting fuel flow.
    • Low Oil Levels: Insufficient oil can cause the engine to run poorly.
  • Solutions:
    • Clean or replace the air filter.
    • Clean the carburettor and fuel lines.
    • Check oil levels and top up if necessary; ensure it’s the correct type and level for the engine.

3. Vibration or Excessive Noise

  • Problem: Unusual or excessive vibrations and noise from the machine.
  • Possible Causes:
    • Loose Bolts or Screws: Parts of the machine may have come loose, affecting its stability.
    • Worn-out Rammer Pads or Bushings: Over time, the pads or bushings might wear out and cause increased vibration.
    • Internal Engine Issues: Engine problems such as loose parts or internal wear.
  • Solutions:
    • Inspect and tighten all bolts, screws, and fasteners.
    • Check and replace worn-out rammer pads or bushings.
    • If the engine is the source of the issue, have a professional inspect the engine for internal problems.

4. Fuel Leaks

  • Problem: Fuel leakage around the engine or fuel lines.
  • Possible Causes:
    • Damaged Fuel Lines: Cracks or punctures in the fuel lines can cause leaks.
    • Loose Fuel Cap: A loose fuel cap can lead to leakage.
    • Damaged Fuel Tank: Cracks or holes in the fuel tank.
  • Solutions:
    • Inspect and replace any damaged fuel lines.
    • Tighten the fuel cap properly.
    • If the fuel tank is damaged, it may need to be replaced.

5. Overheating

  • Problem: The engine or machine overheats during use.
  • Possible Causes:
    • Low Oil Levels: Lack of lubrication can cause overheating.
    • Clogged Cooling Fins: Dirt and debris can clog the engine’s cooling system.
    • Continuous Operation: Operating the machine for extended periods without breaks can lead to overheating.
  • Solutions:
    • Ensure that oil levels are correct and top them up if necessary.
    • Clean the engine’s cooling fins and air intake to ensure proper ventilation.
    • Allow the machine to cool down during prolonged use.

6. Compactor Plate Not Moving

  • Problem: The compactor plate fails to move or operate properly.
  • Possible Causes:
    • Worn-Out Vibrator: The vibrator mechanism may have worn out or malfunctioned.
    • Loose or Broken Vibration Mechanism: The vibrating components might be loose or broken.
  • Solutions:
    • Inspect the vibration mechanism and repair or replace any worn-out components.
    • Check for loose parts and tighten or replace them.

7. Excessive Fuel Consumption

  • Problem: The machine consumes more fuel than usual.
  • Possible Causes:
    • Carburettor Issues: A malfunctioning carburettor can cause an overly rich fuel mixture, leading to excessive fuel consumption.
    • Dirty Air Filter: A clogged air filter can cause the engine to burn more fuel.
    • Engine Timing Problems: Incorrect engine timing may lead to inefficient fuel usage.
  • Solutions:
    • Clean or replace the carburettor.
    • Clean or replace the air filter.
    • Have a mechanic check and adjust the engine timing.

8. Difficulty with Starting or Idling

  • Problem: The engine starts but idles erratically or shuts down.
  • Possible Causes:
    • Carburettor Problems: The carburettor could be clogged or dirty.
    • Ignition Problems: A faulty ignition system can cause poor idling.
    • Fuel Contamination: Contaminated fuel may cause erratic idling.
  • Solutions:
    • Clean or replace the carburettor and ensure fuel quality.
    • Inspect the ignition system and replace any faulty components.
    • Drain and refill the fuel tank with fresh fuel.

9. Electrical System Failures

  • Problem: Electrical components such as the starter or lighting system fail to work.
  • Possible Causes:
    • Faulty Wiring: Corroded or damaged wires can disrupt the electrical system.
    • Blown Fuse: A blown fuse can cause certain electrical components to fail.
  • Solutions:
    • Inspect the wiring for damage and replace any corroded or broken wires.
    • Replace any blown fuses and check the electrical system for short circuits.

Regular maintenance, such as keeping the machine clean, changing oil and filters, and inspecting key components, can prevent many of these issues. If problems persist, consulting a professional mechanic – That’s us!

Spares & parts bibliography

For all spares and parts we recommend our sister company – HTS Spares

The guys at HTS Plant Sales are great. They obviously have a wealth of experience in compact equipment which makes dealing with them very easy.
Construction Company, Leeds