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#1623847 - 12/08/2018 15:57 Removing Seatbelt Pre Tensioners
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
I've had a look but can't find anything on this subject so I'm going to ask.

I've got the rear interior cards off at the moment. I've done a bit of de-rusting and I've siliconed the Pininfarina badge legs. Whilst at it, I noticed a bit of rust behind the seatbelt pre tensioners.

Would I be wise to leave alone, or would it be the thing to remove them to sort the rust more easily?

As far as I know on the subject, You have to disconnect the battery for about half hour minimum, and I believe it's recommended to wear safety goggles. Other than this I don't know if a) I'm wise to meddle and b) if there is anything else I should be aware of.

Any help would be gratefully received
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#1623942 - 13/08/2018 21:23 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Gunzi Offline
Club Member 189
Forum is my life

Registered: 30/08/2007
Posts: 6756
Loc: Southsea
Which part is this Mark?

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#1623947 - 13/08/2018 21:45 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
Sorry Chris, The black plastic module with the pyrotechnics in. It’s held in place with one brass coloured screw and a clip
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#1623948 - 13/08/2018 21:49 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
I’m just wanting to know if it is a wise thing to remove it to deal with some rust behind it, or to work around leaving it alone. I know they’re explosive like the air bags, just wondered if anyone had played around with them and could advise
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#1623956 - 14/08/2018 06:28 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Nigel Offline
Club member 123
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Registered: 16/12/2005
Posts: 16932
Loc: Staffordshire
I’ve removed loads from cars we’ve dismantled - just disconnect the battery, wait a good while, then remove the unit

If you really want to make sure there’s no residual charge in the car, press the brake pedal ( after the battery has been disconnected) as this will actuate the brake light switch, which should get rid of any charge that might be lurking in the system (although I suspect this is a bit of an old wive’s tale and it’s not actually possible....)
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#1623960 - 14/08/2018 08:03 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Kelv27 Offline

Forum is my job

Registered: 25/06/2007
Posts: 4399
Loc: Malaysia..Glasgow at heart
Mark, do you mean removing the entire seat belt reel assembly from the car or stripping the assembly?

As for stripping the assembly, I have attempted this before and its impossible to do without destroying the whole thing.
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#1623965 - 14/08/2018 10:14 Re: Removing Seatbelt Pre Tensioners [Re: Kelv27]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
Thanks for the help Kelv, no I just wanted to get behind it to attend to some rust on the body then put it back in. I was just worried about any issues doing so. thumb
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#1623966 - 14/08/2018 10:17 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
Nigel, that’s exactly what The info I was after, so really grateful to you for that. I’ll have a go at it and hopefully I’ll get the back of the car tidied up.
Many thanks again Nigel thumb
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#1623967 - 14/08/2018 10:20 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
Massive thanks for the replies on this one. I didn’t want to go messing and ending up with no arms & legs afterwards. - one step closer to a tidier Coopthumb
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#1623974 - 14/08/2018 13:44 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Nigel Offline
Club member 123
Forum veteran

Registered: 16/12/2005
Posts: 16932
Loc: Staffordshire
To be fair, the worst-case scenario is that you somehow manage to fire the pre-tensioners, which should do nothing more than make you jump/deaf/pee your pants (delete as appropriate....)

Unless the unit was defective, the pyrotechnic discharge is meant to be contained within the unit
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#1623976 - 14/08/2018 15:15 Re: Removing Seatbelt Pre Tensioners [Re: Nigel]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
Well Nigel,...the aforementioned 3 events are a daily occurence with me anyway, so I doubt I’d notice anything out of the ordinary! crazy
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#1623979 - 14/08/2018 16:19 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Nigel Offline
Club member 123
Forum veteran

Registered: 16/12/2005
Posts: 16932
Loc: Staffordshire
That genuinely made me chuckle - now getting funny looks in the office....
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#1623982 - 14/08/2018 17:40 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
laugh
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#1623983 - 14/08/2018 18:46 Re: Removing Seatbelt Pre Tensioners [Re: Mark_D]
barnacle Online   happy
Club Member 18 - Membership Secretary
Forum Demigod

Registered: 17/12/2005
Posts: 31878
Loc: Hemel in the Hempstead
One point to remember: before reconnecting the battery when you've finished the work, turn *on* the ignition (and make sure it's out of gear!).

That way, when you reconnect the battery, if it should go boom, you're out of the immediate vicinity on the other side of the firewall...
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#1623989 - 14/08/2018 20:18 Re: Removing Seatbelt Pre Tensioners [Re: barnacle]
Mark_D Offline
Club member 1684
On a journey

Registered: 15/10/2014
Posts: 164
Loc: Portsmouth
I thought that’s what girlfriends were for biglaugh

“Hey Donna, as soon as I’ve reconnected the battery...you can take the Coop for a spin?” wink

No, on a serious note...that’s a top tip and thanks for that! thumb
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