M62 TU timing chains and Vanos rebuild

**NUTTTR** · 4th September 2020, 10:32 AM

Ouch... Painful!

**glenhendry** · 8th September 2020, 08:14 AM

I have ordered the chain guide kit and also Vanos rebuild kit from Basien. I also ordered a new crank pulley bolt, because they say its a stretch bolt and should not be reused (at $24 from LR its not too bad anyway). What about the front cover main seal? Do L322 ones have issues? I see no stories about them online, even tho P38 suffered from them - they are $59 from LR, so if it's not leaking I may leave it be?
Thanks!

**Laurie** · 8th September 2020, 02:58 PM

Glen
For peace of mind and the small outlay I would replace the seal !

You will kick yourself if in the future it leaks

Laurie

**glenhendry** · 8th September 2020, 03:12 PM

Originally Posted by Laurie

Glen
For peace of mind and the small outlay I would replace the seal !

You will kick yourself if in the future it leaks

Laurie

Sorry Laurie, I should have specified that RAVE shows special tools to remove and replace that front crank seal that I do not have. I was thinking that I don't want to disrupt a working seal without assurance that I would be able to put on the new seal and have it -seal-

I couldn't find general seal tools for a reasonable price.

**Laurie** · 8th September 2020, 08:19 PM

Glen
Is this any help ?

BMW Engine – Mechanics Tool Hire

Laurie

**glenhendry** · 11th September 2020, 05:08 PM

This forum has an amazing amount of information on the Vanos rebuild and the timing of the M62TU.
The Vanos Forum

My parts havent arrived yet, but I suspect I will be doing the VANOS rebuild, the reinstall, the retiming, and the startup next week. Interference engines are scary

**NUTTTR** · 15th September 2020, 10:37 AM

I found one post on a BMW forum (link to follow if I can find it again...) where someone did the lower timing guides without touching the vanos or cams... He tied the chain tight around the cam so it couldn't slip and same for crank end.

This appeals to me as I don't want to touch the vanos until it's really really required (timing, etc).

Is this possible? Won't be changing the chain either...

**Laurie** · 15th September 2020, 03:13 PM

I have seen a set of photos where this was done. Basically he used x/heavy duty cable ties, pining the chain to the sprockets

if I can find them I post them up later.

Laurie

**NUTTTR** · 15th September 2020, 04:43 PM

Originally Posted by Laurie

I have seen a set of photos where this was done. Basically he used x/heavy duty cable ties, pining the chain to the sprockets

if I can find them I post them up later.

Laurie

I think I found it!!!

Timing chain guides - no need for timing!!!! Not a bmw approved method !!! | Bimmerfest BMW

No pictures for me though in the thread... But that was kind of what I envisaged. I swear there were pictures last time I saw it... Unless it was a different thread

**FisherX** · 15th September 2020, 05:33 PM

I guess you could try it that way but having done the job myself I wouldn't try doing it without at least the crank and cam locking tools. The cams have a bit of tension on them and want to move a bit when the tension comes off the main chain and you have to use a 27mm spanner (or big shifter) to move the cams to fit into the cam blocks.

Doing the job with the correct timing tool kit was pretty straight forward except for one thing! The cam locking blocks are marked in German so "E" is the inlet cam and "A" is exhaust.

I'm happy to lend out my timing kit to anyone on the forum that wants to do the job themselves. Although, I paid $177 for my kit delivered from ebay so not that expensive to have in the tool box.

Also that method won't work it you are going to change the chains or the upper tensioners.

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