I've got a 6 volt truck and an old Penske 12 volt timing light. I use my 12 volt lawnmower battery to power the timing light. It works.
That lifter looks solid to me also. No retaining clip.
Since you have experience making lash adjustments you should be able to loosen up a rocker arm enough to take a pushrod out then remove a lifter.
First you want the camshaft lobe pushing the lifter up so it's easier to use your fingers (engine not hot) to grasp the lifter to pull out.
Do not use any tool to remove a lifter that can scratch or damage it's surface. Do not drop, gently lower, the lifter down on the camshaft.
An old lifter can be stubborn to remove (build-up of varnish or deposits). I have to work them up and down while speaking a few "choice words".
Last edited by buoymaker; 06/14/2022 6:31 PM.
