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HydLifters_04

What is Hydraulic Lifter Preload?


Mechanical cam designs require a running clearance or valve lash; hydraulic lifters are just the opposite. When the rocker arm assembly is properly torqued down into position, the pushrod must take up all the clearance and descend into the hydraulic lifter, causing the pushrod seat to move down by .020" to .060". The distance that the pushrod seat moves down away from the retaining lock is the "Lifter Preload." The hydraulic mechanism requires this precise amount of "preload" for it to do its job properly.

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Automotive Performance Distributors
167 Railway Tce
Mile End South
5031 South Australia

Ph. 08 83635566
sales@autopd.com.au

About Us

Automotive Performance Distributors Pty. Ltd.(Formerly Crane Technologies Pty. Ltd) was set up in 1997 as a Joint Venture with Crane Cams in the USA, to distribute the range of Crane products to retailers & wholesalers throughout Australia.

Automotive Performance Distributors is 100% Australian Owned and Operated.

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