Terex TW85 - User Manual

Questions and Answers

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Kaylee BlanchardSep 12, 2025
Why does my Terex Excavators have no zero position of travel direction?
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  zwilliamsSep 12, 2025
  If your Terex Excavators has no zero position of travel direction, the switch for travel direction might be damaged (short-circuit), needing repair or replacement. The magnet could be stuck or damaged, also requiring repair or replacement. The centring actuator may lack a neutral position, needing a check and recalibration. Internal damage to the variable displacement pump could necessitate a complete pump replacement.
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Colin RamirezSep 13, 2025
Why are the working cylinders not operating satisfactorily on my Terex TW85 Excavators?
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  David WintersSep 13, 2025
  If the working cylinders on your Terex Excavators are not operating satisfactorily, it could be due to worn seals in the cylinders, requiring resealing. Alternatively, the secondary valves may be defective, necessitating a check and complete replacement if necessary.
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Pamela ThomasSep 18, 2025
What causes no or insufficient interlock of the plunger cylinder in my Terex TW85 Excavators?
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  millerarthurSep 18, 2025
  If you experience no or insufficient interlock of the plunger cylinder on your Terex Excavators, it could be due to a mechanical fault, requiring a check of the valves and replacement if necessary. There might be an electrical malfunction, necessitating a check of switches, cables, connections, and the fuse. A lack of pressure build-up requires checking the hydraulic supply. A spongy interlock can be resolved by bleeding the plunger cylinders.
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Laura WilliamsNov 23, 2025
What to do if the hydrostatic travel drive on my Terex TW85 works in neither direction?
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  Kathleen PriceNov 23, 2025
  If your Terex Excavators hydrostatic travel drive works in neither direction, start by checking the hydraulic oil level and top it up to the mark if it's too low. Inspect the mechanical connection to the diesel engine and repair if faulty. A damaged charge pump might be the issue, requiring replacement of the variable displacement pump. Check and replace the switch or valve for travel direction if damaged. Ensure the power supply to the switch or solenoid valve isn't interrupted and repair any issues. Inspect and replace the pressure relief valve if faulty. Replace a clogged suction filter. Check for kinks in the suction line between the tank and pump. Troubleshoot and repair insufficient supply pressure or interrupted variable displacement pump activation. If there's mechanical damage to ...
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John WadeNov 27, 2025
Why is my Terex TW85 experiencing sluggish acceleration and deceleration, with too little propulsive power?
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  Steven SmithNov 27, 2025
  If you experience sluggish acceleration and deceleration or too little propulsive power with your Terex Excavators, begin by checking the diesel engine for insufficient power. Inspect for any stuck brakes and remedy the damage. Ensure proper tank pressurization by checking and replacing the tank seal if necessary. Replace a clogged suction filter. Re-seal a rotary joint if there's oil loss. Check and re-seal the charge pump if it's sucking up air. Verify and adjust insufficient charge or supply pressure. Inspect, readjust, or replace a dirty or damaged pressure relief valve of the charge circuit. Check and readjust insufficient high-pressure. For a variable displacement pump that doesn't open fully, check and readjust insufficient pilot pressure or repair mechanical damage to the pump adju...