67 31 541 Removing and installing/replacing drive unit for head restraint adjustment (comfort seat, backrest completely removed)

WARNING: This page is about a different car, the 2003 BMW 530i, 2002 BMW 530i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.

Remove backrest cover with padding, refer to 52 17 405 REPLACING BACK-REST COVER FOR FRONT SEAT (COMFORT) ON LEFT OR RIGHT SIDES .

Unlock plug (1) and remove.

Fig 1: Unlocking Drive Unit For Head Restraint Adjustment Plug And Removing

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Pull backrest adjustment shaft (1) out of backrest adjustment gearing (2) and drive unit for head restraint adjustment (3).

Fig 2: Removing Backrest Adjustment Shaft Out Of Backrest Adjustment Gearing

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Remove retainers.

Remove backrest adjustment gearing (1) and drive unit for head restraint adjustment (2).

Fig 3: Removing Backrest Adjustment Gearing And Drive Unit

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A: Screw in output spindle (1) up to stop (2) and then screw back 1 turn.

B: Push backrest adjustment gearing (3) onto backrest frame.

If necessary, press backrest frame down a little.

Fit retainers.

Fig 4: Installing Backrest Adjustment Gearing To Backrest Frame

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Turn output spindle (1) until backrest adjustment gearing (2) can be pushed on without tension (do not press backrest frame down under any circumstances).

If necessary, readjust with backrest adjustment shaft.

Fit retainers.

Fig 5: Adjusting Backrest Adjustment Gearing

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Insert backrest adjustment shaft (1) into backrest adjustment gearing (2) (other end with square section (3) is not fitted yet).

Fig 6: Inserting Backrest Adjustment Shaft Into Backrest Adjustment Gearing

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Place backrest frame on a flat surface. Measure distance (X) on left and right.

Permitted deviation on left and right sides: max. 2 mm.

If necessary, adjust backrest adjustment gearing with square section of backrest adjustment shaft.

Fig 7: Adjusting Dimension "X"

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Insert backrest adjustment shaft (1) into drive unit for head restraint adjustment (3).

Fig 8: Inserting Backrest Adjustment Shaft Into Drive Unit

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Installation :

Backrest adjustment shaft must not protrude over sheet metal fold (risk of damage).

If necessary, turn backrest adjustment shaft (1) minimally by hand until square section fits into drive unit for head restraint adjustment (3).