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I'm in the middle of changing out a noisy idler pulley A 000 202 08 19 (INA F-552153) and it has quickly escalated out of hand.
Car is a 2007 S65 AMG (221.179) with the V12 biturbo, M275.982 engine.
Part in question is number 5, "Guide pulley 2" in this diagram:
Problem is that there have been several updates to the part number, and I am encountering fitment issues.
The original part number is NLA, superseded to A 277 200 00 00.
First tried INA aftermarket, then a genuine MB part. Both have the same issue, which is a different "depth" from the outside rim, to the face of the inner race.
This causes the new bearing to hit/contact the timing case onto which it is mounted.
This picture should explain the difference, notice how the original (left) is almost flush from inside to outside, and on the new one (right) the inner race sits deeper.
Here is a pic of the front cylinder head/timing cover, circled where there is interference when the idler bolt is tightened down:
The part number on my timing cover is A 275 010 07 35, which apparently has been updated to A 275 010 11 35, pictured here:
I can see a slight difference to the mounting point, but I really don't want to spend $400 on yet another part.
Not to mention, I'd also have to rip apart the valve cover (just did the gasket) all for this one stupid idler pulley.
The old pulley is destroyed from me hammering on it, trying to get the inner race out, so car isn't driveable until this is fixed.
Are there any secret stashes of the old part, some new old stock somewhere?
Already searched eBay and all the usual places. Might call INA/Schaeffler tomorrow...
Has anybody done this job? WIS document AR01.30-P-5700MR attached.
I am in the same issue with my 2008 W221 S600 now my car is out of service I saw one thread talking about manufacturing pulleys in USA maybe if contacted them you could help your self and help Me .
I ended up finding a good used end cover on eBay and installed it. My valve cover gasket was new and supple enough to warrant reuse - I lifted it only enough to clean the mating surface and allow the end cover to be removed.
The end cover is pretty stubborn to remove, both due to the existing RTV and rusty dowel pins. It wouldn’t pull or pry off at all.
I threaded one valve cover bolt in, to use as a contact point for some careful use of force from the backside:
On the other side, one of the air injection valve bolts worked well as a striking surface. A few firm taps with a mallet and crowbar, and off she came.
SL600 / SL450 (107) / E350 / BMW M5 E60 / BMW 745i (E23) / BMW X6M / Toyota Hilux 4 WD/ Honda CBX 10
Bearing
Originally Posted by krazykipa
I'm in the middle of changing out a noisy idler pulley A 000 202 08 19 (INA F-552153) and it has quickly escalated out of hand.
Car is a 2007 S65 AMG (221.179) with the V12 biturbo, M275.982 engine.
Part in question is number 5, "Guide pulley 2" in this diagram:
Problem is that there have been several updates to the part number, and I am encountering fitment issues.
The original part number is NLA, superseded to A 277 200 00 00.
First tried INA aftermarket, then a genuine MB part. Both have the same issue, which is a different "depth" from the outside rim, to the face of the inner race.
This causes the new bearing to hit/contact the timing case onto which it is mounted.
This picture should explain the difference, notice how the original (left) is almost flush from inside to outside, and on the new one (right) the inner race sits deeper.
Here is a pic of the front cylinder head/timing cover, circled where there is interference when the idler bolt is tightened down:
The part number on my timing cover is A 275 010 07 35, which apparently has been updated to A 275 010 11 35, pictured here:
I can see a slight difference to the mounting point, but I really don't want to spend $400 on yet another part.
Not to mention, I'd also have to rip apart the valve cover (just did the gasket) all for this one stupid idler pulley.
The old pulley is destroyed from me hammering on it, trying to get the inner race out, so car isn't driveable until this is fixed.
Are there any secret stashes of the old part, some new old stock somewhere?
Already searched eBay and all the usual places. Might call INA/Schaeffler tomorrow...
Has anybody done this job? WIS document AR01.30-P-5700MR attached.
I have the same probleem. Im gone make spacer.
Was it exactly flush design ? If not, how much ”lower” is it? Cant measure my own because my wheel is gone.
It looks like the older ribbed idler would need a spacer to bring it back to the new spec. the old version also has a inner sleeve it looks like, where new version like we make has a bolt with a centering shoulder.
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E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
SL600 / SL450 (107) / E350 / BMW M5 E60 / BMW 745i (E23) / BMW X6M / Toyota Hilux 4 WD/ Honda CBX 10
Originally Posted by Exotic-metal55
It looks like the older ribbed idler would need a spacer to bring it back to the new spec. the old version also has a inner sleeve it looks like, where new version like we make has a bolt with a centering shoulder.
no.. the new wheel need the spacer not the stock old one.
The spacer that presses into the bearing ends up almost flush with the outside of the pulley. Assemble with washers; install belt to determine needed depth (measure thickness of washers) and have a guy with a lathe cut one out for you. Easy project.
Or.... purchase the kit pictured above and replace all of those pulleys.
Each of the OE pulleys has but one bearing in them. When one is failing how long do you expect the rest of them to live? The bearings can be replaced in all of them. Be gentle.
I know this an old thread but has anyone figured out the spacer thickness or a different part number of one that fits?
Remove the bearing from the pulley. Purchase several of that bearing. MB won’t have it but a bearing supply store will. There is a part number on that bearing. Replace bearings in all idlers. Re-use original spacer for the pulley. Be gentle. The bearings come right out.
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M275 idler pulley fitment headache
