pump up lifters
#1
pump up lifters
I am replacing the lifters on my 05 FHLT, 46K miles. The front started making noise and taking a few miles to pump up. I was told the new lifters need to be pumped up (filled) prior to assembly, but I find this impossible. I tried pushing down on the plunger using the bottom of an old pushrod in my drill press but the plunger does not move at all, I tried soaking the lifters but this too did not seem to be effective. Suggestions? Do they need to be filled prior to start-up?
#2
Heres a little trick that really works. Have a cup or small bowl of the oil you want to use. Find a piece of hose that has the same ID as the OD of the lifter, you only need a piece about 6-8" long. Slip the hose over top of the lifter, ensuring you don't push it onto the lifter too far as to cover up the side oil hole. Put the lifter in the oil so that it covers the side hole. Start your shop vac, and using your hand, create a seal from the vac hose to the hose on the lifter. When you see oil starting to come out the top of the lifter, it is primed..
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#6
I find no difference in adjusting primed or not primed lifters, zero lash is zero lash, and all adjustments are made from that point.
#7
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#8
Damn, I think you could spin the rear wheel forever by hand before you would get them completely pumped up! You can also leave the spark plugs out, and crank the engine over with the starter in short bursts not only to pump up the lifters, but if a new build, to prime all of the oil galleys, get the filter full and to have an easier start.
I find no difference in adjusting primed or not primed lifters, zero lash is zero lash, and all adjustments are made from that point.
I find no difference in adjusting primed or not primed lifters, zero lash is zero lash, and all adjustments are made from that point.
#10