51 23... Adjusting/replacing bump stops

The illustrations are schematic representations and are to be applied to the relevant vehicle type.

Version 1:

Following parts must not be damaged:

(1) Bump stop

Fig 1: Identifying Bump Stop

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Adjust bump stop (1) to correct height by turning left or right.

Fig 2: Turning Bump Stop

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Version 2:

Replace damaged bump stops:

(1) Bump stop with ejector

Fig 3: Identifying Bump Stop With Ejector (Version 2)

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Press ejector (1) into bump stop and, in this position, twist approx. 90° counterclockwise with a Phillips screwdriver.

This locks the ejectors (1) in the bump stops.

Adjust bump stop (2) to correct height by turning left or right.

Unlock the ejector (1) again after completing adjustment.

Fig 4: Identifying Bump Stop And Ejector

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Version 3:

Replace damaged bump stops:

(1) Bump stop

Fig 5: Identifying Bump Stop (Version 3)

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Turn lock (1) 45° counterclockwise.

Pull bump stop (2) upwards.

Close lid slowly until it is at the same height as the side panel.

Open lid and turn lock (1) clockwise.

Installation:

Press bump stop into panel and drive in expanding pins (3).

Fig 6: Turning Lock Clockwise

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The graphics are schematic representations and are to be applied to the relevant vehicle type.

Prerequisite: Lid must be correctly adjusted.

Following parts must not be damaged:

(1) Bump stop
(2) Catches

Remove stop pad by pressing latch mechanisms back.

Fig 1: Identifying Bump Stop And Catches

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Screw in stop pad (1) to create distance to front compartment lid.

Place a cone (2) of modeling or sealing compound on the stop pad.

Slowly close bonnet.

Fig 2: Identifying Stop Pad And Cone

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Raise bonnet.

Compressed cone (1) determines distance between stop pad and front compartment lid.

Fig 3: Identifying Compressed Cone

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Measure dimension a between compressed cone and edge (1) of stop pad.

Fig 4: Identifying Dimension Between Cone And Edge

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Adjust measured dimension a + 0.5 mm by unscrewing stop pad (1).

Fig 5: Adjusting Measured Dimension Of Cone And Edge

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The graphics are schematic representations and are to be applied to the relevant vehicle type.

Prerequisite: Lid must be correctly adjusted.

Following parts must not be damaged:

(1) Bump stop
(2) Catches

Remove adjusting buffer by pressing latch mechanisms back.

Fig 1: Identifying Bump Stop And Catches

Courtesy of BMW OF NORTH AMERICA, INC.

Screw adjusting buffer (1) until the pin (2) can be pulled out.

Slowly pull the pin (2) out approx. 15 mm.

Slowly close engine compartment lid.

The pin (2) is thus pushed into the adjusting buffer (1).

Fig 2: Identifying Adjusting Buffer And Pin

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Raise engine compartment lid.

Unscrew the adjusting buffer (1) until it is flush with the upper edge of the pin (2).

Fig 3: Identifying Adjusting Buffer And Pin

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