# 2004 Cadillac DeVille - Main bearing - Is ti tricky? **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** cadillac\ **Created:** [February 8, 2022, 12:16am UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342 "2022-02-08T00:16:17Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Xavier16](https://avatars.discourse-cdn.com/v4/letter/x/b9bd4f/32.png) [@Xavier16](https://community.cartalk.com/u/Xavier16)\ **Post date:** [February 8, 2022, 12:16am UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/1 "2022-02-08T00:16:18Z")
Main bearing is they easy to do car have little knocking noise to it can I save it? ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [February 8, 2022, 1:24am UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/2 "2022-02-08T01:24:13Z")
My crystal ball says… sorry, do you want to try that again? where it actually makes sense, so we know what you are really asking Main bearing is easy to do can I save it? Chrystal ball says… yes, if you fix it, you can save it. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [February 9, 2022, 12:31am UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/3 "2022-02-09T00:31:43Z")
Main bearings easy… No. Replacing the bearings is hard enough but the crankshaft likely must be machined so the engine must come out and apart. ---
**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\ **Post date:** [February 9, 2022, 5:45pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/4 "2022-02-09T17:45:33Z")
Yes, it is very tricky! Since you didn’t know the answer to your own question, I will presume that you need me to ask: what makes you think you have a main bearing problem? There are a lot of possible choices for noises and vibration. Getting a correct diagnosis is also very tricky. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [February 9, 2022, 6:09pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/5 "2022-02-09T18:09:59Z")
[![](https://global.discourse-cdn.com/cartalk/original/3X/0/5/050f442a7524ad51eca7ecb99256caf45dfe53ca.jpeg "How to Remove Main Bearings Without Removing the Crankshaft - Cool Trick Using a Cotter Pin!") ](https://www.youtube.com/watch?v=CWrJtUrqDDc) Tester ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [February 9, 2022, 6:46pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/6 "2022-02-09T18:46:52Z")
North Star motor has 2 main issues. The case 1/2 seal leaks oil so pan is dropped and bottom of case/block is removed to reseal. You could change bearings but I don’t think a 2004 deville is worth effort. Headbolts is next issue. But don’t go there. ---
**Author:** ![ledhed75](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@ledhed75](https://community.cartalk.com/u/ledhed75)\ **Post date:** [February 9, 2022, 6:51pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/7 "2022-02-09T18:51:12Z")
Personally, when someone starts asking about replacing a main bearing on an older vehicle, I think: 1. Get at least a second estimate. 2. Start looking for a new vehicle, or at least a new engine. Good luck. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [February 9, 2022, 6:54pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/8 "2022-02-09T18:54:32Z")
Yeah, if the main bearings are bad, there are lots of other ones likely on their way out, too, along with the rings. ---
**Author:** ![JayWB](https://avatars.discourse-cdn.com/v4/letter/j/e480ec/32.png) [@JayWB](https://community.cartalk.com/u/JayWB)\ **Post date:** [February 9, 2022, 9:12pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/9 "2022-02-09T21:12:41Z")
As for Tester’s cotter pin trick: years ago there used to be a tool made just for that. It was a little “T” shaped thing called a “roll out pin”. You used it exactly the same way it’s shown in Tester’s posted video, except it was a tool made specifically for the job. The problem with them was that sometimes the bearing was stuck in the block badly enough that the pin wouldn’t roll it out. And by the time you figured out that it wasn’t coming out the bearing was also so beat up by the pin that it HAD to be replaced, it couldn’t run at all any more. I don’t know when they stopped making them, but I couldn’t find any with Google. In any case, if you have to ask, you’re already in way over your head. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [February 9, 2022, 9:19pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/10 "2022-02-09T21:19:07Z")
> **[Crankshaft Bearing Remover / Installer](https://www.toolsource.com/crankshaft-c-1321_139_144_951/crankshaft-bearing-remover-installer-p-100034.html)** > > Crankshaft Bearing Remover / Installer A cotter pin’s much cheaper. Tester ---
**Author:** ![JayWB](https://avatars.discourse-cdn.com/v4/letter/j/e480ec/32.png) [@JayWB](https://community.cartalk.com/u/JayWB)\ **Post date:** [February 9, 2022, 9:28pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/11 "2022-02-09T21:28:17Z")
That’s not a rollout pin. ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [February 9, 2022, 9:49pm UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/12 "2022-02-09T21:49:30Z")
Another rollout pin, different design. > **[TJ1220 - Main Bearing Upper Shell Removal Tool for Jenbacher Engines](https://tescotools.com/products/tj1220)** > > Price: USD 0.00 Tester ---
**Author:** ![JayWB](https://avatars.discourse-cdn.com/v4/letter/j/e480ec/32.png) [@JayWB](https://community.cartalk.com/u/JayWB)\ **Post date:** [February 10, 2022, 3:44am UTC](https://community.cartalk.com/t/2004-cadillac-deville-main-bearing-is-ti-tricky/182342/13 "2022-02-10T03:44:27Z")
There you go, that’s the rollout pin I remember.