page_title: Idler arm
hierarchical_section_title: Idler arm
caption_attribution_description: English: A schematic showing an Ackermann (or conventional) steering linkage. The image was made based on the images at http://www.carquestchassistraining.com/ss_steering_linkages.htm , http://www.carquestchassistraining.com/sus_tie_rod.htm , http://www.motorera.com/dictionary/pa.htm , http://img.carwale.com/apollo/tyre02.jpg and based on information in the book "Zo werkt uw auto" by Rien Tholenaar &amp; Carel Zaal. 1: steering wheel 2: steering shaft 3: steering gearbox 4A: pitman arm 4B: idler arm 5: centerlink 6: inner tie rod 7: adjusting sleeve 8: tie rod arms yellow: suspension shafts, shock absorbers &amp; coil springs pink/red: steering linkage light green/dark green: tie rod arms/tie rod blue/light blue: (lower) frame/front part of the frame (there are 2 frame arms connected to each of the tie rod arms; the first arm (and the second for the frame of the rear wheels) has 2 standing pipes (in a cross-like setup) connecting the lower tie rod arm with the upper one, aswell as providing an extra attachment point for the steering linkage grey: wheel rim orange: wheel shaft (would normally run all the way trough around the height of the steering linkage, not shown for reasons of clearity brown: wheel tyre Note that the shock absorber/spring are connected to the upper frame (not shown) at the top; this holds the shock absorber/spring in place (together with the bottom connection). The top yellow axle is thus not intented to keep it in place; rather it is used to transfer shocks.
context_page_description: On an automobile or truck with a conventional parallelogram steering linkage, the idler arm or idler arm assembly is a pivoting support for the steering linkage.
  The idler arm supports the end of the center link on the passenger's side of the vehicle. The idler arm bolts to the vehicle's frame or subframe. Generally, an idler arm is attached between the opposite side of the center link from the Pitman arm and the vehicle's frame to hold the center link at the proper height. Idler arms are generally more vulnerable to wear than Pitman arms because of the pivot function built into them. If the idler arm is fitted with grease fittings, these should be lubricated with a grease gun at each oil change.
context_section_description: On an automobile or truck with a conventional parallelogram steering linkage, the idler arm or idler arm assembly is a pivoting support for the steering linkage.  
  The idler arm supports the end of the center link on the passenger's side of the vehicle. The idler arm bolts to the vehicle's frame or subframe.  Generally, an idler arm is attached between the opposite side of the center link from the Pitman arm and the vehicle's frame to hold the center link at the proper height.  Idler arms are generally more vulnerable to wear than Pitman arms because of the pivot function built into them.  If the idler arm is fitted with grease fittings, these should be lubricated with a grease gun at each oil change.
caption: Ackermann steering linkage
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