211-04 Steering Column: Description And Operation (page 4 of 9)

 
The steering column is attached to the in-vehicle crossbeam and secured with four, pan head, thread forming Torx 
screws. The two forward attachment screws are fixed through the column mounting bracket, the two rearward mounting 
screws also pass through the shearing capsules. In the event of a high energy frontal impact, the shearing capsules 
remain fixed to the crossbeam, but the 'U' bracket (with the main body) disengages from the capsules, allowing the 
column to shorten axially (collapse), absorbing energy to reduce occupant loading. 
 
The column comprises a cast magnesium roof bracket which is attached to the in-vehicle crossbeam. Attached to the roof 
bracket is a pivot housing, a 'U' bracket, upper and lower shafts and a main body. The roof bracket has two hooks which 
locate in slots in the in-vehicle crossbeam. The hooks assist in supporting the weight of the column during removal or 
installation. 
 
The pivot housing is attached to the forward end of the roof bracket with two pivot pins. The pivot housing allows for 
adjustment of the column rake and contains a bearing which supports the column lower shaft. 
 
The 'U' bracket is attached to the roof bracket by a screw, bush and plastic washer assembly (third fixing) located in a slot 
in the top of the roof bracket. When the column is assembled into the vehicle, the shearing capsules, which are attached 
to the 'U' bracket, are clamped up against the roof bracket by the fixing screws, preventing movement of the 'U' bracket. 
 
The main body is positioned in the 'U' bracket via the lever bolt. The bolt is captive within the vertical slots in the 'U' 
bracket and the horizontal slots in the main body. The bolt also passes through the clamp plate assemblies (one on either 
side of the 'U' bracket). The body houses the middle and upper bearings through which the upper shaft is located. Two 
offset holes in the main body provide for the attachment of the column lock assembly. 
 

7

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Lock assembly

8

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Cam plate (part of adjustment lever)

9

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Fixed cam

10

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Adjustment lever

11

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Brake pad

12

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Lever nut

13

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Lever bolt

14

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Shearing capsule (2 off)

15

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Clamp plate assembly (2 off)

16

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Adjustment spring

17

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Main body

18

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Strap (2 off)

19

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Steering angle sensor

20

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Pivot pin

21

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Pivot housing

22

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Universal joint

23

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Bush

24

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Pressure washer (2 off)

25

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Upper shaft

26

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Upper bearing

27

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Tolerance ring

28

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Lock collar

29

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Middle bearing

30

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Spring

31

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Retainer

32

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Lower shaft

33

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Retaining ring

34

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Driving collar

35

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Swing yoke

36

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Lower bearing retaining ring