Rebuilding hydraulic lifters

[Both Feet Down]

My lifter valves are extra stuck in the underside of the bucket, the banging method definitely doesn't work, so I've tried pulling out with lockjaw plyers, but that seems to damage the black collar which holds the valve assembly in the lifter. Do I pull on the black colar, or pull on the stainless valve assembly? (which contacts/opens the inlet/exhaust valve) is there a method or a tool that doesn't smash up the lifters too much?

Cheers

Edited February 27, 2023 by Both Feet Down
Grammar

[joshuaho96]

35 minutes ago, Both Feet Down said:

My lifter valves are extra stuck in the underside of the bucket, the banging method definitely doesn't work, so I've tried pulling out with lockjaw plyers, but that seems to damage the black collar which holds the valve assembly in the lifter. Do I pull on the black colar, or pull on the stainless valve assembly? (which contacts/opens the inlet/exhaust valve) is there a method or a tool that doesn't smash up the lifters too much?

Cheers

Generally speaking if you're marring up a machined surface you're probably doing it wrong. Is it possible to use a small punch, rubber hammer, and a socket to tap it out?

[Both Feet Down]

Yes my thoughts exactly, I did see a tech on YouTube doing what you are saying, but I can't seem to find a punch small enough to fit in the top hole.. Don't want to in large it any bigger.

PS: if anyone got a couple spare lifters in NZ please let me know. 

Cheers 

Edited February 28, 2023 by Both Feet Down
Grammar

[Both Feet Down]

Going to grind down a punch and try that...

[joshuaho96]

20 hours ago, Both Feet Down said:

Going to grind down a punch and try that...

I have a punch set with some absolutely tiny punches, any chance you could order smaller ones? I'm not at all handy with machining though so my first reaction to most problems like this is to throw money at it.

[Both Feet Down]

I tried to modify my punch this morning but can't get it small enough without it degrading the structural integrity of the tool, so I'll have another look around the big smoke on Friday (couldn't find one fine enough last visit) when I'm in town, got to love rual living haha

[GTSBoy]

21 hours ago, Both Feet Down said:

Going to grind down a punch and try that...

 

1 minute ago, Both Feet Down said:

but can't get it small enough without it degrading the structural integrity

Perhaps, if you have to have another shot at this, try using a file. Punch lays flat on a steel workbench/piece of flat bar & held there. File kept as parallel to the surface as possible and pushed across the punch. Rotate the punch a little after every stroke. Will be slow, but will eventually get there and is not quite as violent as trying to lay a really thin punch remnant up against the grinder.

Or, do what you can with the grinder, then when you get down to the limit of comfort, change over to the file.

[Both Feet Down]

Yep that's definitely the approach, I've been using course sand paper with the rolling method as well, my file is buggered so I'll get a new one if I can't find a mini punch and have another crack.

[TurboTapin]

If ever you don't get around to getting these to work, part# VL4951-P24 for a jobber set of these lifters that can still be purchased. I bought a set for 200-300$ from Tog in Australia roughly a year ago. My engine machinist is the one who recommended them. 

Cheers. 

[Both Feet Down]

Thanks TurboTapin! Good to know, cheers!