The torque spec is 18 ft-lbs, but I couldn't see how to get one of my torque wrenches in there. But overall, the company managed to make a very good and reliable power unit. When the camshaft lobes are no longer compressing the valve springs, then you can safely remove the camshaft, as it will have no more forces placed on it. Since each pair of cam lobes is supported by a single cam bearing cap in the center , slowly removing this bearing cap will leave equal pressure on both sides over a very small distance - basically making it impossible to break the camshaft. For me - I would be inclined to combine both your methods especially if cyl head were on the bench in any case. Connect the gas intake pipe from the throttle body. The key to safely removing the camshaft is to reduce the uneven forces that are placed on it during the removal process.
Maybe just try to measure your engine temp - if it runs too cool it is also bad and might also cause some lambda issues as they must be on a certain temp. January 28, 2018 Followup from the Pelican Staff: Thanks for the follow up. If you blow a head gasket, take the entire head in to be re-worked. Fit the new gasket, new oil fitting snug fit and pops when its pushed in to place. I began my rebuild when I did a compression test and noticed I had poor compression in cylinders 2-6 about 142 psi, the bottom of the service limit. For this reason, I recommend that this be a two-person job.
There should be one spot on the camshaft where you can rotate it, and all cylinders two through five should have the valves closed, and the lifters free to spin with your finger. Got worse over time, did the Lamda made an improvement but still not 100%. This will move the pistons about half-way in their bores so that they won't have any danger of touching the pistons - no matter what you do. Overheating could also be attributed to your water pump. But now I notice there are a couple valves that are slightly compressed, even when the lobes are pointing directly up and there should be no pressure on the lifters. Secure the support bolts of the inlet pipeline.
Heres the new parts — a gasket and the oil fitting with O-rings. The problem lies with the tension that is placed on the camshaft by the valve springs. Camshaft bearing caps should be tightened to 11 ft-lb 15 Nm , as shown in. April 19, 2011 Followup from the Pelican Staff: You want the engine properly timed when you remove the head. Camshafts are also hardened, which makes them very brittle and prone to cracking.
Therefore, out come the cams. Could very well cause the performance issue and just fits the code. This helps with reinstallation and obtaining correct engine timing. And i had found 2 additional cracks from the green color gasket. I think it only has one - the M43 only had one if I recall correctly. August 16, 2014 Followup from the Pelican Staff: I don't have that information handy.
Thanks for the great articles! This will minimize the amount of force on the camshaft. Ideally the 3 or 4 hole would be better as if there is a slip, it would cut the radius in half. Glad you had this article to follow. Unless jio one E90 to cheong one time to test? Then put the bearing caps on top with the bolts in. Anyways, let's talk for a moment about why the camshafts break, so that we can discuss the methods used to prevent this from happening. Unscrew the top of the intake manifold in the front support and the rear support arrows on an illustration. I then kept the ram and stock on the caps and completed tightening the caps down, in an alternating method similar to bolting the head down till they were all seated.
Begin tightening the bearing cap for cylinder number one, a quarter turn on each nut, alternating as you go. Takes a little longer - but less risk. Note: As a result of disconnecting the battery erases the data from the fault memory of some control units. E39 error code 123 bmwdriver forums cooling system water hoses bmw parts catalog. Hello Edmundp, I got so fed up with this car this morning, I dicided to take it too a very good vriend of mine to and try and diagnose this issue. A large C-clamp should do the trick.
Did you ever try this on a non-vanos motor? March 19, 2010 Followup from the Pelican Staff: Thanks for the feedback. Now I should pay a new one? Got worse over time, did the Lamda made an improvement but still not 100%. In your picture it's at the back of the engine with what I can tell every bearing cap off other than the last one. I bought this E46 and managed to overall the complete engine a few days before my accident. Simply loosen the clamp, and the valve springs will push back until the valve closes, and will push back the final cam bearing until free of pressure. The theory is that if only one set of valves are open at a time, there are no forces or loads placed on the camshaft from any other lifters.
I hand tightgen up the bottom 2 bolts, and gently push the upper part of the housing towards the engine. The method I used in the article is far simpler than the jig method shown below. I don't have repair info for Euro engine, so I can't give you specifics. Remove the guide tube oil level indicator at the bottom of the inlet pipeline the arrow in the illustration. Let's take a look for a moment at. Jacob April 9, 2014 Followup from the Pelican Staff: This is a tough one. There should be as much pressure as you can achieve with the clamp.