OEM Buick Lucerne Oil Pump

Buick Lucerne Oil Pump Parts and Q&A

• Oil Pump
  89017753
  Q: How to replace the Transfer Oil Pump Inlet Screen and Pipe Seal on the 4T80-E Automatic Transmission on Buick Lucerne?

  A:

  The 4t80-e automatic transmission procedure to replace its transfer Oil Pump inlet screen and pipe seal begins with vehicle suspension and elevation. A drain pan should be positioned beneath the transmission bottom pan while keeping in mind that removing the bottom pan allows drain of only some transaxle fluid because fluid stays trapped within the side cover structure along with the Torque Converter. The liquid drainage process starts with bottom pan bolt relaxation followed by fluid removal from the pan and complete removal of the bottom pan bolts together with pan and the sealing component. The bottom pan sealing surface can be used again if it remains undamaged during inspection. Clean the bottom pan and case sealing surfaces until they are dry because proper sealing depends on it. Also normalize the bolts and tapped holes in the case by cleaning them thoroughly. A small screwdriver should be used to carefully remove the scavenger screen seals from their left and right positions before the case can become damaged. Place new left and right scavenger seals and screens into position before fitting the bottom pan and sealing it in place followed by a finger-tightening procedure of the bolts. The process requires attention to the condition of fasteners. Start by tightening the pan bolts to 3 nm (27 lb in) and continue to 6 nm (53 lb in) and complete by rotating them to 12 nm (106 lb in). Drop the car and refill it with dexron(R) vi transmission fluid according to the necessary amount.