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Author Topic: ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM  (Read 181 times)

Offline Solentview

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  • Model: Alhambra Mk2
  • Spec: 09 2.0TDI
  • First Name: Ken
  • Region: South
ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM
« on: June 07, 2020, 01:15:04 PM »
Hello out there - I am hoping that somebody can assist with identifying the correct bolts which are used to fasten the rubber bushes in the front control arms (left and right) of the Sharan/Alhambra, 09 model with BRT engine. All the exploded parts diagrams I have manged to study only show the M14 bolt for the front bush - VAG N90593803 M14x1.5x90 which seems to tally with the 14mm bore of that bush.
The bolt for the rear bush does not appear to be shown anywhere, except for an old Ford Galaxy diagram which suggests that the same M14 bolt is used. But - the rear bush VAG 7M0407181A has a bore of 18mm. So is N90593803 used at the rear, and does M14 really fit through an 18mm bore, or is it a different bolt?

I am asking the question in case the bolt is damaged when the bushes are changed. Hope somebody can help.
Solentview   

Offline insanitybeard

  • Greetings from Mr Chick!
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  • Model: Galaxy Mk2
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Re: ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM
« Reply #1 on: June 08, 2020, 01:35:54 AM »
Does the below help you at all? Parts diagram for an '09 Sharan which shows both front and rear lower arm to subframe mounting bolts (number 2 on the diagram) as being M14, and both the same part number you quoted in your post:

https://volkswagen.7zap.com/en/rdw/sharan+syncro+4motion/sha/2009-653/4/499-499005/

I can't help regarding the disparity between the bore size of the rear bush and the bolt used to secure it, the only way to be sure is to get the old arm out and take a look. It wouldn't seem right that the bolt would be slack in the bore of the bush, to do its job correctly the arm needs to be clamped firm. Having said that, the same parts diagram I linked above shows even the bolts fixing the subframe to the vehicle chassis as only being M14- that being so, it would seem equally odd that the rear arm mounting bolt only would need to exceed this size.
« Last Edit: June 08, 2020, 02:08:10 AM by insanitybeard »
Always learning..... Often by mistakes!

Offline Solentview

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  • Model: Alhambra Mk2
  • Spec: 09 2.0TDI
  • First Name: Ken
  • Region: South
Re: ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM
« Reply #2 on: June 08, 2020, 07:21:21 PM »
Very many thanks for your reply above and the 7zap diagram, which tells the same story as the old Galaxy diagram that I managed to find. You are right, the only way to find out is to take the bolts out, so I am hoping that there is not too much corrosion in the threads and the bore of the front bush. To that end I have started dosing the four bolts with releasing fluid, in the hope that they can be extracted without too much aggravation. 
Thanks again - Solentview

Offline Mirez

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Re: ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM
« Reply #3 on: June 09, 2020, 11:34:33 AM »
There is an M18 bolt listed for the Sharan under suspension components, N90498002 but nothing else about it or where it fits.
03 Ford Galaxy 1.9 TDI 115 Ghia in Spruce Green Metallic
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Offline Solentview

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  • Model: Alhambra Mk2
  • Spec: 09 2.0TDI
  • First Name: Ken
  • Region: South
Re: ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM
« Reply #4 on: June 11, 2020, 02:21:02 PM »
Thanks Mirez for your note about the M18 bolt. I have just finished making up the extraction tools for removing the bushes, when eventually the control arms are removed, and I am now proceeding cautiously to find ways of releasing the bolts without destroying them or the retaining nuts. As far as I can make out, the rear (unknown) bolts actually protrude out through the upper surface of the subframe, so we are going up on ramps next to see whether the diameter can be measured and to dose with more Wurth Rost Off. The front M14 bolts appear to be entirely boxed in, but there is a tiny hole in the side of the subframe (used for tooling and assembly, presumably) and a short plastic extension on the Wurth aerosol nozzle just fits through to the vicinity of the caged nut.

If anybody has any tips on how to remove these bolts, easily without damage, they would be gratefully received.

I will post more if, as, and when I make forward progress.
Solentview

Offline johnnyroper

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Re: ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM
« Reply #5 on: June 11, 2020, 04:16:53 PM »
My old 02 model the bolts both sides came out no issue at all, whether I was lucky or they are not prone to rusting in I donít know. If I recall I impact gunned the one and the other I used a spanner or ratchet due to access.

Offline insanitybeard

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Re: ALHAMBRA 09 FRONT WISHBONE/CONTROL ARM
« Reply #6 on: June 12, 2020, 01:12:50 PM »
You could pre-emptively spray the accessible areas of thread with penetrating oil, let it soak for a while and then re-apply before trying to crack the bolts off just a tad. I've never had the arms out of mine to speak from experience on what state the bolts come out in but I did recently have the wheel knuckle to front damper clamp bolt shear off on me which was a nightmare as the strut and wheel knuckle can't be separated until the bolt is removed.
Always learning..... Often by mistakes!

 

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