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Transmission Fluid Change

Updated on March 29, 2013

Change Transmission Fluid

At the specified intervals, the fluid in the automatic transmission should be drained and replaced. Before this is attempted, the recommended transmission fluid should be purchased.

The necessary tools to complete the job should be readily available which includes jack stands to support the vehicle in a raised position, wrenches, drain pan capable of holding at least four quarts, rags and newspapers.

It is best to drain the fluid immediately after the vehicle has been driven. Hot fluid is more effective than cold fluid at removing built up sediment { warning you should wear protective gloves because of the high temperature of the fluid}.

After the vehicle has been driven to warn up the fluid, is should be raised and support on jacks stands for access to the transmission drain plugs. The drain pan along with the necessary tools should be under the vehicle at this time, be mindful not to touch the hot exhaust components.

The drain pan should now be place under the drain plug in the transmission, and the drain plug removed to let the fluid out. Once the fluid is drained, reinstall the drain plug and retighten it securely.

Depending on the transmission eg Toyota, remove the transmission pan bolts, then carefully pry the pan loose with a screwdriver and allow the remaining fluid to drain. Remove the filter retaining bolts, and remove the filter from the transmission.

Install a new filter in position, and install the bolts. The bolts should now be tighten to the torque specified by the manufacturer. The gasket surface of the pan should be cleaned, removing any trace of old gasket material. Noting the location, remove the magnets, wsh the pan in clean solvent and dry it with compressed air. The magnets should be cleaned and reinstalled.

Install a new gasket, place the fluid pan in the position and install the bolts in their original positions. The bolts should now be tightened to the specified torque. The vehicle should be lowered and with the engine switched off, new fluid should be added to the transmission through the dip stick tube.

The engine should now be started and the transmission shifted throughout the gear range then into park and the parking brake applied. Now with the vehicle idling, check the fluid level. Fluid should now be added to the cool level on the dipstick.


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