Terex TW85 - User Manual

Questions and Answers

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Mr. Danny SpencerAug 20, 2025
Why is my Terex TW85 Excavators machine working too slowly and the hydraulic oil getting too hot?
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  Veronica HillAug 20, 2025
  If your Terex Excavators machine is working too slowly and the hydraulic oil is overheating, it could be due to several reasons. The main relief valves might be set too low or damaged, requiring readjustment or replacement. The hydraulic pump could have excessive wear, necessitating replacement. A low hydraulic oil level requires topping up to the correct mark. Ensure the hydraulic oil meets the recommended quality standards. Air in the hydraulic system needs to be purged by tightening connections. Finally, a dirty or damaged oil cooler should be cleaned, checked, and replaced if needed.
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Robert PetersonAug 22, 2025
Why has the performance of my Terex TW85 Excavators machine decreased?
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  Justin JohnsonAug 22, 2025
  If your Terex Excavators machine's performance has decreased, several factors could be responsible. The engine may not be producing sufficient power, requiring a check of the diesel engine. The hydraulic oil level might be too low, needing a top-up to the indicated mark. Air could be entering the system through loose hose connections, which should be tightened, and O-rings or seals should be replaced as necessary. Finally, the operating pressure might be insufficient, requiring readjustment or replacement of the main relief valves.
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Casey RichardsAug 26, 2025
What to do if the hydrostatic travel drive on my Terex TW85 Excavators only works in one direction?
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  Ronald HawkinsAug 26, 2025
  If the hydrostatic travel drive on your Terex Excavators only works in one direction, begin by checking and repairing or replacing the switch for travel direction if it is damaged. Inspect the solenoid valve for sticking or damage, replacing it if necessary. Ensure the power supply to the switch or solenoid valve is not interrupted and repair any issues, including the ground connection. Check and replace the filling circuit's non-return valve if it's defective. Swap the high-pressure relief valves to see if the problem reverses, then examine, clean, and replace the faulty valve. Inspect the positioning pressure on the adjusting piston for leaks. If there is mechanical damage to the variable displacement pump or engine, it may need to be checked by a service agent.
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Brian RandolphAug 29, 2025
What should I do if my Terex TW85 Excavators installation is not working?
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  Jamie Velazquez PhDAug 29, 2025
  If your Terex Excavators installation is not working, ensure the toggle switch for working hydraulics is set to “ON”. Check the left-hand armrest control panel for defects and repair or replace if necessary. Inspect the oil supply to the hydraulic pump and check the lines. If the hydraulic pump has failed, have it checked by a specialist and replace it if necessary. Also, check the main relief valves and replace them if necessary. Ensure the maintenance ladder is folded up. Repair or replace a defective switch on the maintenance ladder.
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Cassandra FergusonAug 31, 2025
Why is there no steering movement in my Terex TW85?
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  Jeremy ReedSep 1, 2025
  If your Terex Excavators exhibits no steering movement, several potential causes exist. The oil supply to the pump might be interrupted, requiring a check and repair of the suction line. The hydraulic pump could be damaged, necessitating inspection, repair, or replacement. A damaged priority valve or hand metering unit may require professional service. A damaged steering cylinder needs repair, as does any mechanical fault.
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Amy AriasSep 2, 2025
What causes the hydraulic oil in my Terex Excavators to exceed the maximum admissible temperature?
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  wsheaSep 2, 2025
  If the hydraulic oil in your Terex Excavators exceeds the maximum admissible temperature, it could be due to several reasons. A damaged thermo switch needs replacement. A low oil level requires topping up to the mark on the sight glass. A dirty or damaged oil cooler should be cleaned, checked, and replaced if necessary. A clogged suction filter needs replacement. High-pressure valves that don't respond consistently should be checked and readjusted if necessary. If the flushing circulation isn't functioning, check the pressure of the flushing and charge pump, look for back pressure in the cooling circuit, and check housing pressure. Finally, a damaged variable displacement pump or motor may need replacement.
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Billy CallahanSep 4, 2025
Why is the uppercarriage on my Terex TW85 slewing too far?
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  Kenneth YoungSep 4, 2025
  If your Terex Excavators uppercarriage is slewing too far, the swing brake may be defective, requiring inspection, repair, or replacement. Alternatively, there may be unacceptable wear in the swing operation, which needs to be checked and possibly replaced.
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Sonya RodriguezSep 6, 2025
Why is the service brake performance insufficient on my Terex Excavators?
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  Jamie JohnsonSep 6, 2025
  If the service brake on your Terex Excavators has insufficient performance, it could be due to wear in the brake discs, which requires repair. The brake system itself might be damaged, necessitating repair or replacement. A mechanical fault could also be the cause, requiring repair.
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Ronald YoungSep 8, 2025
Why does the parking brake on my Terex TW85 Excavators have no function?
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  Jimmy WatsonSep 8, 2025
  If the parking brake on your Terex Excavators has no function, it could be because the spring-loaded brake is mechanically unblocked, requiring reactivation. Alternatively, there may be a hydraulic fault in the spring-loaded brake actuation, which needs repair.
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Kimberly BallSep 10, 2025
Why is the swing brake performance insufficient on my Terex TW85?
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  Nancy HarrisSep 10, 2025
  If the swing brake on your Terex Excavators has insufficient performance, it could be because the brake pads are worn, requiring replacement. Alternatively, there may be a fault when actuating the brake, which needs repair.