Sorry I missed the part on Hydraulic Lift Adjusters (HLA ) because the ones I have worked on uses shims and you mentioned shims which got me off track.
HLA would be easier to handle. There are no shims and all you need to do is to relieve the pressure on the HLA.
There are no valve clearances specifications for HLA except that there must be some clearances when the cam lobe is not pushing against it.
Nissan uses HLA that is in the form of a cylinder and you need to take them out and cup it downwards repeatedly on a wooden block to take the piston out and clean them before reassembly by pushing the piston inwards fully, the would take the pressure out of the HLA.
Sunday, November 18th, 2012 AT 4:05 PM