Removing the chain slide rail guide - BMW N42/N46 Chain Rail Replacement [PART #3]

In this video series I diagnose and repair a broken chain rail guide and jumped chain on a BMW N42/N46 engine in an E46 3 Series car.
PART #3
0:00 Removing VANOS bolts and VANOS adjuster units
6:31 Removing top part of the chain slide rail guide
11:13 Removing journal bolts for the bottom part of the chain slide rail guide
18:36 Removing VANOS solenoid controll units
21:50 Removing bottom part of the chain slide rail guide
Engine had reduced power and rattling noises after acceleration. Fuel consumption was also increased.
INPA software showed these error codes:
- 2782 CDKPH - Nockenwellengeber Auslass, Lage der Phasenflanken oder Einbaulage außerhalb Toleranz (2782 Camshaft Sensor Exhaust)
- 27BB CDKANWS Nockenwellensteuerung Auslass-VANOS, Anschlagadaption außerhalb gültigem Bereich (27BB Exhaust Camshaft Control)
INPA analog value 4 also showed that outlet VANOS unit position was incorrect.
I then removed the valve cover and found that top part of the chain rail guide was broken and the chain jumped two teeth on the exhaust camshaft.
This was most probably because of a combination of weak (still original) chain tensioner and old brittle plastic chain rail guide.
I then proceeded with putting the exhaust camshaft back in to correct position so I could lock the camshafts with the locking tools and remove VANOS bolts. That enabled me to remove VANOS units, VANOS solenoids and finally the broken chain rail guide. I also found the plastic guide was broken in two places and managed to get all the broken pieces out of the engine.
Next I installed new chain guide rail and did the timing. I also replaced the brake booster vacuum pump seals in the process.
Then I put everything back together and confirm the repair with scanning the car wit INPA again.
PARTS (required):
- VANOS bolts: 11367500574
- Chain guide rail: 11317512520
- Chain slide rail: 11317505608
PARTS (optional):
- Chain tensioner: 11318685091
- Seal kit for vacuum pump: 11668626471
- VALVETRONIC sensor connector gasket flange: 11377502022
- Valve cover gasket: 11120032224
TOOLS:
- N42/N46 Timing tool kit: cutt.ly/yhVmCJF
DISCLAIMER:
BimmerZen assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. BimmerZen recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of BimmerZen , no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not BimmerZen.

[@agcobileboqwana9923]

Thank you so much Bimmer Zen, i used all your videos to bring back my e90 back to life, Thank you for sharing this wonderful art.

[@vladicamarinkovic]

Nice tips and tricks mister. 👍
As always systematic, precise and with patience. Great work!
Pozdrav brate 👏

[@marekmarecki3883]

Great job bro!

[@rebeccaa2782]

This is how you make a video!!!! Good job

[@charlesimasiku1896]

You are one of the best UA-camrs. Excellent video.

[@benzbenzm646]

#4

[@greenzen3]

What is that chilling music at the end?

[@whateverrrrrr123]

Please anyone, do you have to lock the flywheel if you only want to change the top chain guide?

[@BimmerZen]

Yes, because you need to remove the VANOS units to replace the top chain guide and you need to retime the engine after that.

[@MrSupertim2000]

Why can´t you rotate the crankshaft with the camshafts disconnected? I mean the valves won't be operated by the cam, so the valves could not hit the piston. 15:40

[@BimmerZen]

Some valves might still be opened when the camshafts are in, so not rotating the crankshaft too much out of TDC on first piston is a good insurance that you don't bend any valves.

[@seasonedtoker]

Ne bom trdil, ampak mogoce bi slo brez preskakovanja verige. Jaz bi najprej aretiral samo sesalno in jo odtegnil, potem zavrtel motor malenkost nazaj, da se izpusna poravna z orodjem in odtegnes se tisto?

[@BimmerZen]

Se da tudi tako ja, ampak me je zanimalo, če je možno kar direktno nazaj nastaviti in pa za koliko zob je preskočila veriga.