Question 1

How to replace the transmission pan on Cadillac Eldorado?

Accepted Answer

Begin replacement of the Oil Pan by raising your vehicle upside down while supporting it. One must put a drain pan beneath the transmission bottom pan in order to collect the liquid. Draining transaxle fluid from the hydra-matic 4t80-e requires the removal of the bottom pan since the side cover and Torque Converter maintain fluid retention; draining side cover fluid requires removing the case Drain Plug when the bottom pan is already off and Torque Converter draining is usually not necessary during service procedures. Remove any fluid collected in the pan by loosening the bottom pan bolts before completing the pan bolt removal and total pan extraction along with the removing the seal. Bottom pan replacement is necessary when damage appears on its sealing surface during inspection. The bottom pan seal cannot be reused so technicians should replace the seal with a new one after performing any service. You must ensure the bottom pan and case sealing surfaces are dry and clean together with bolted and tapped holes in the case because proper bolt torque depends on this condition. Install the new bottom pan and new seal while bolting it throughout before tightening the bolts manually at first. Follow this specific tightening order for pan bolts which includes first a 3 nm (27 inch lbs.) torque then 6 nm (53 inch lbs.) and ending with 12 nm (106 inch lbs.). After lowering the vehicle you should put dexron iii transmission fluid according to the required amount.

Question 2

How to replace the transmission pan on a Hydra-Matic 4T80-E on Cadillac DeVille?

Accepted Answer

A proper starting point to replace the Oil Pan consists of elevating and supporting the vehicle. A drain pan should sit underneath the transmission bottom pan during fluid drainage. Partial transmission fluid drainage occurs when servicing the hydra-matic 4t80-e because the side cover and Torque Converter maintain fluid within them; draining from the side cover requires removal of the case Drain Plug after bottom pan extraction but Torque Converter draining should only happen for specific service needs. The procedure requires bottom pan bolt loosening while draining fluid from the pan until the bolts and pan with its seal can be successfully removed. Before reinstallation you must replace the bottom pan seal as it is not reusable because you found dents or nicks on the sealing surface while inspecting it. The case sealing process requires clean and dry bottom pan and sealing surfaces while bolts and tapped holes in the case must also be free from debris for optimal bolt torque. Begin by installing the bottom pan followed by the new seal and then securing the bolts with a finger-touch force before securing them to the correct torque. Pan bolts must be tightened to the stated torque values of 3 nm (27 inch lbs.), then 6 nm (53 inch lbs.) and finally 12 nm (106 inch lbs.) in that order throughout multiple stages. The final task involves slowly lowering the vehicle while filling the transmission with dexron-iii fluid per specifications.

Question 3

How to service the transmission pan on a HYDRAMATIC 4T80-E on Cadillac Seville?

Accepted Answer

The first step for servicing the fluid pan requires you to raise and support the vehicle. A drain pan must be placed beneath the transmission bottom pan during fluid collection. The bottom pan removal from hydramatic 4t80-e leaves some transaxle fluid inside the side cover and Torque Converter since the Drain Plug in the case needs to come out after the bottom pan is detached. Fluid extraction from the Torque Converter itself is not essential during regular maintenance. You should first drain the fluid from the pan by loosening its bottom bolts before you can remove both the bottom bolts and pan along with the new seal. The bottom pan must replace when denting or nicking appears on its sealing surface. Cleaning both the sealing surfaces of the bottom pan and the case and drying them properly leads to correct sealing while cleaning and drying all caso bolts and threaded opening helps maintain precise tightening torque. Fasten the bottom pan along with its new seal and bolts before tightening them loosely. Tackle the pan bolt torquing procedure by tightening the bolts successively at 3 nm (27 inch lbs.) for the first sequence then 6 nm (53 inch lbs.) followed by 12 nm (106 inch lbs.). Perform the fluid addition of dexron-iii transmission fluid while lowering the vehicle. Perform reset of the transmission oil life indicator when doing a full fluid replacement task. The bottom pan seal becomes unusable after the bottom pan removal so replacement is needed following any service procedures.

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