S 320 LWB (140.033) L6-3.2L (104.994) (1995)
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Seat Belt Height Adjuster: Description and Operation
Function
Sequence of movements:
The automatic seat belt adjusting device mainly consists of a guide rail with toothing [2], in which a pinion [6] is engaged.
A guide roller [7] and a guide element are connected to the hinge pin of the pinion.
When the front seats are adjusted from front to back. the guide element is pulled backwards into the upper position in a ratio of 2:1 via a double pulley
block.
When the front seats are adjusted from back to front, a rewind spring [8] assumes the downward movement of the guide element.
The adjusting path of the seat belt height adjustor is 105 mm, i.e. the seat adjustor can activate the seat belt height adjustor linearly from 0-210 mm.
When the seat is adjusted from 210-300 mm, the seat belt height adjustor is against the upper stop.
The Bowden cable [9] is pulled through the adjusting system due to the pretensioned overtravel spring [11].
When the seat is adjusted from 300-210 mm the overtravel springs pull the released cable slack as far as the stop of the cable nipple [10].
Locking:
The pinion is attached to a guide part, to which a locking plate [5] with a sliding retaining spring [3] is attached.
On the locking plate the belt forces are led via the screwed-on deflection brace.
If the force affecting the locking plate exceeds the force of the retaining springs, these are pushed into the pinion toothing and the guide element is
locked.
As the seal belt height adjustment is automatic and therefore cannot be influenced, the shoulder belt position cannot be individually changed.
