Thomas 135TA - User Manual

Questions and Answers

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karina84Aug 2, 2025
Why is there a loss of hydraulic power with flow from the gear pump in my Thomas Front End Loader?
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  Heather KelleyAug 2, 2025
  The loss of hydraulic power, despite flow from the gear pump, can be due to several reasons. The reservoir may be low on fluid, so replenish it with 10W30 API SJ oil. The foot pedal linkage might be disconnected or binding, requiring inspection and adjustment. Also, the auxiliary hydraulics could be engaged, so disengage them. Finally, there may be a relief valve failure in the control valve, in which case you should check the pressure and adjust it.
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Yolanda RamirezAug 7, 2025
How to fix hydraulic fluid overheating in my Thomas 135TA Front End Loaders?
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  ericawoodsAug 7, 2025
  Hydraulic fluid overheating can occur due to several reasons. First, check if the reservoir is low on fluid and replenish it with 10W30 API SJ oil. Second, the oil cooler might be plugged or dirty (also check engine radiator), so clean the cooling fins. Third, the auxiliary might be engaged, so disengage it.
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Scott AdamsAug 12, 2025
What to do if lift arms raise slowly at full engine RPM in my Thomas Front End Loaders?
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  Jack WilliamsAug 12, 2025
  If the lift arms raise slowly even at full engine RPM, several factors could be responsible. Start by checking if the reservoir is low on oil and replenish with 10W30 API SJ oil. Inspect and adjust the foot pedal linkage if it's binding. Ensure the auxiliary is disengaged. Verify the engine RPM and reset if it's too slow. Replace the anticavitation check valve spring if it's broken. Check the pressure of the main relief or port relief valve in the control valve, and adjust if necessary. Inspect the pump flow for internal leakage due to wear, and repair or replace as needed. Finally, install new piston seal kits if oil is bypassing one or both lift cylinder piston seals.
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Walter WashingtonAug 17, 2025
What causes hydraulic action to be jerky in Thomas 135TA?
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  Lisa JenkinsAug 17, 2025
  If the hydraulic action is jerky, it could be due to a few reasons. The reservoir might be low on oil, so replenish it with 10W30 API SJ oil. There could be air in the hydraulic system; check for leaks between the reservoir and pump, and bleed the system by extending and retracting the lift cylinders several times. Also, the anticavitation check valve may not be functioning, requiring inspection, repair, or replacement.
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Holly HernandezAug 22, 2025
What to do if lift or tilt cylinders will not support a load in Thomas 135TA Front End Loaders?
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  nmahoneyAug 22, 2025
  If the lift or tilt cylinders won't support a load, first check for external leaks between or at the control valve and cylinders, and correct any leaks found. Next, check for sticking foot pedal linkages, as the control valve spool may not be centering. Also, check for a broken or stuck return spring on the valve spool. Finally, install new piston seal kits if oil is leaking by one or both cylinder piston seals.
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Sheila LopezAug 27, 2025
Why is there a loss of hydraulic power with no flow from the gear pump in my Thomas Front End Loader?
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  Amber SkinnerAug 28, 2025
  If you're experiencing a loss of hydraulic power with no flow from the gear pump, it could be due to several factors. First, check if the reservoir is low on fluid and replenish it with 10W30 API SJ oil, also check for hose or fitting leaking. Second, inspect and replace any damaged parts in the coupling between the engine and pump, and check for misalignment between the engine and pumps. Third, inspect the spline coupling for sheared splines between the front and rear hydrostatic pump, and also check the pump shaft bearings. Finally, the hydraulic gear pump itself may not be functioning, so inspect and repair it.