pairs the rocker arms of each pair straddling a pedestal supporting the shaft and being resiliently biased axially towards one another and against the pedestal by a one piece wire spring clip that resiliently surrounds and engages the rocker shaft and axially bears against the rocker arms application_number US 51822683 A description this invention relates to valve rocker assemblies for internal combustion engines conventional valve rocker assemblies of internal combustion engines comprise a rocker shaft mounted in pedestals which are usually bolted to the cylinder head of the engine rocker arms are pivotally mounted on the rocker shaft and are positioned axially on the rocker shaft by compression springs mounted coaxially with the rocker shaft this construction suffers from the disadvantages that the use of compression springs places a high axial load on the rocker arms thereby increasing the friction in the system additionally in order to remove a defective compression spring the rocker shaft must be removed completely from the pedestals and the rocker arms the components must then be reassembled on to the rocker shaft with the new spring this is a laborious and time consuming operation gb no 2069602a discloses a rocker assembly in which the conventional compression springs are replaced by a holding member which is bolted to the pedestal the holding member is formed partially as a leaf spring so as to clasp both sides of the rocker arm and to retain the rocker.