Rotate the race 90 degrees, and repeat the sanding procedure. To check for axial play, hold the piston stationary with one hand and gently move the transfer gear in and out with the other. Rough idle, noise cold and stalling, misfire codes, etc. Lastly, Tajj, you said you had to go to the machine shop a few times. I'm also finding similar difficulty with this, since my vise at home is not going to be able to take the full tightening step of the press.
Our vanos units are professionally rebuilt to a much higher standard than the factory refurbished units and will solve engine performance problems that are due to a malfunctioning or stuck vanos. The camshaft actuators are controlled via engine oil pressure with solenoids. Would you mind sending me your parts list? We also use engine assembly lube wherever applicable. When I started up the car, there was an initial rumble with oil getting into the chains and bits you've worked with, however it went silent right after. Rotate the engine in a clockwise direction until the intake and exhaust camshaft lobes on cylinder 1 are pointing towards each other as shown. The Repair: The the repair itself took about 45 hours or so.
A bearing adjustment can be made at installation to address any minor axial fit variation. After doing a bit of research I figured that I'd go with the kit. Some Notes: Before you start the repair, make sure you have access to a stable and secure vice. When I took it apart to send back to the place I purchased it from, I carefully marked everything, so when I put it back together, I could put everything back exactly as I received it originally. As of right now im just ordering the Beisan kit, but i'd like to know what else i should get. Even thought the power loss is barely felt it's the opposite result once you replace the seals, every car that gets rebuilt ends up wowing the customer and all of them saying they didn't realize what they lost.
Also, doing it in warm weather helps. Horsepower and torque loss noticeable during acceleration and a drop in fuel economy. You can also get here. Just make sure all cables are disconnected. However both come with the same weaker buna o-rings which will lead to vanos seals failure in the near future again. As soon as the second set of teeth on the transfer gear line up, the entire Vanos unit will slide inward until it meets the cylinder head.
Also clamp down chains as well to prevent them from falling in. A premium product replacement with easy to follow instructions makes rebuilding your Vanos unit a must. There was also a loss of low-end torque. The place I purchased this from has been very slow to respond and I don't expect any help from them. There are a number of symptoms that will plague your car as a result of these failing seals such as erratic idle, engine hesitation, stalling, and increased fuel consumption to name a few. We know from experience that it is not as easy as it sounds so we take great care to make sure the cam timing is set the correct way.
This will also give you a feeling for the movement of the sprockets, which can help you during Vanos installation in the next few steps. Getting the Cooling System and Cabin Air Ducts, electrical wiring off was probably the most annoying bit with my repair surprisingly. Also make sure your vice is tightened as much as possible. Furthermore, per bearing specification and consultation with bearings companies, there should be no bearing axial play and a notable axial pre-load tightness should be present. Thoroughly clean the bearing race and skip to step 12 on the next page. In this illustration, the bearings would be too tight.
Even thought the power loss is barely felt it's the opposite result once you replace the seals, every car that gets rebuilt ends up wowing the customer and all of them saying they didn't realize what they lost. At higher engine speeds, intake valve timing is once more retarded, resulting in better power and performance. Not trying to dissuade you from doing this portion of the procedure, but in our case, out multi-meter portion did not work as intended. Reinstall the two Vanos exhaust sprocket access caps and torque them to 50 Nm 37 Ft-lbs. We got no codes as well which was a great relief. I almost purchased a new engine. Broken cable to the solenoid valve.
The thrust bearings are a standard part and are manufactured to tight tolerances. In this system, only the timing on the intake camshaft is varied. Install the new o-ring into the piston groove. Once you have loosened the piston cap, reposition the piston and cover plate so they are secured horizontally in the vise. I guess I'm wondering how the vanos got 'unpressed'. The O-rings are made of a material that is failing in the engine environment.