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Old 05-02-2012, 03:20 PM   #1
Gregsenne
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Seatbelt

How does the seatbelt lock up? Is it based on the amount of force the belt is pulled from the reel, like every other chevy vehicle I can think of?

Because mine, I can yank and yank as forcefully as I want, but I've only got it to lock up a few times. And last time I went to the junk yard, I pulled on random seatbelts from these year trucks and suburbans, and couldnt get a one of them to lock up.

I can take any other chevy car or truck I have and yank the belt hard and it locks. But I can't get a single one of these old trucks to lock but maybe a few random times.
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Old 05-02-2012, 03:25 PM   #2
dv8customs
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Re: Seatbelt

Could be a weighted locking device that swings forward under braking that causes the seatbelt to lock?? That would be independant of the force applied to the belt itelf.
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Old 05-02-2012, 03:28 PM   #3
GM-power
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Re: Seatbelt

It gives you the feeling that your not wearing a seatbelt lol. I would check out what dv8 said.
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Old 05-02-2012, 08:30 PM   #4
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Re: Seatbelt

like a centrifugal clutch? I got belts from lmc and I have to make sure I pull slow otherwise they fight me the whole way out!
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Old 05-02-2012, 10:02 PM   #5
grs
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Re: Seatbelt

Quote:
Originally Posted by dv8customs View Post
Could be a weighted locking device that swings forward under braking that causes the seatbelt to lock?? That would be independant of the force applied to the belt itelf.
My 87 locks when I slam on the brakes.
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Old 05-02-2012, 10:57 PM   #6
BLE 'BURBAN
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Re: Seatbelt

There is a weighted pendulum inside the retractor section that can swing to & fro. When you slam on the brakes it causes the weight to swing forward causing the belt to "lock up"
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Old 05-03-2012, 12:13 AM   #7
Gregsenne
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Re: Seatbelt

I'll have the truck out on the road for the first time this weekend, so I'll try slamming the brakes and se what it does. It just worried me that my belts wouldn't actually work.
I'll let you know what I find out in a few days. Thanks!
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Old 05-03-2012, 01:15 AM   #8
BLE 'BURBAN
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Re: Seatbelt

Watch out for traffic behind you!!
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015
1990 chevy suburban V2500 5.7L
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Old 05-03-2012, 09:12 AM   #9
grs
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Re: Seatbelt

Quote:
Originally Posted by Gregsenne View Post
I'll have the truck out on the road for the first time this weekend, so I'll try slamming the brakes and se what it does. It just worried me that my belts wouldn't actually work.
I'll let you know what I find out in a few days. Thanks!
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You may have to spray some WD40 on them to get them loosened up.
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