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| Pre-filling hydraulic lash adjusters http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=80456 |
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| Author: | greiswig [ Mon Oct 20, 2014 4:13 pm ] |
| Post subject: | Pre-filling hydraulic lash adjusters |
Those of you who have replaced your rocker assemblies... You're supposed to prefill the hydraulic lash adjuster with oil before putting it in the head, aren't you? I just tried pumping the first one with my fingers in an oil bath, and I can't get it to go solid. Any tricks? |
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| Author: | greiswig [ Mon Oct 20, 2014 5:48 pm ] |
| Post subject: | Re: Pre-filling hydraulic lash adjusters |
Never mind...naturally, the very first one out of 16 was a problem, but the rest were easy. |
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| Author: | 65Corvair [ Mon Oct 20, 2014 7:27 pm ] |
| Post subject: | Re: Pre-filling hydraulic lash adjusters |
I did not pump mine up before I installed them, I did however let them sit in motor oil for 24 hours before I installed them. That was 15,000 miles ago, if there was a issue it would have made itself known by now. I will check them at my next timing belt change in 85,000 miles. If they are replaced again I will try to pump them up before installing. |
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| Author: | thermorex [ Mon Oct 20, 2014 8:53 pm ] |
| Post subject: | Re: Pre-filling hydraulic lash adjusters |
65Corvair wrote: I did not pump mine up before I installed them, I did however let them sit in motor oil for 24 hours before I installed them. That was 15,000 miles ago, if there was a issue it would have made itself known by now. I will check them at my next timing belt change in 85,000 miles. If they are replaced again I will try to pump them up before installing. +1 to this, let them soak for a day and that's enough. |
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| Author: | greiswig [ Mon Oct 20, 2014 9:39 pm ] |
| Post subject: | Re: Pre-filling hydraulic lash adjusters |
Soaking won't accomplish what I'm trying for: to have the adjusters NOT start up with a bunch of slack. This also let me check to make sure they would actually hold once pumped up. No point buttoning it back up with a faulty HLA. |
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| Author: | Rocky05 [ Tue Oct 21, 2014 2:05 am ] |
| Post subject: | Re: Pre-filling hydraulic lash adjusters |
greiswig wrote: Soaking won't accomplish what I'm trying for: to have the adjusters NOT start up with a bunch of slack. This also let me check to make sure they would actually hold once pumped up. No point buttoning it back up with a faulty HLA. You'd have to swap in solid lifters to do that. It would completely eliminate the little protection that the hydraulic lifters offer in the event of a timing belt failure. |
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| Author: | Hexus [ Tue Oct 21, 2014 7:53 am ] |
| Post subject: | Re: Pre-filling hydraulic lash adjusters |
You do not have to pre-fill them. Just dipping them into oil and then coating the top connector, roller, etc. with assembly lube prior to installation is quite enough. |
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| Author: | thermorex [ Tue Oct 21, 2014 9:12 am ] |
| Post subject: | Re: Pre-filling hydraulic lash adjusters |
greiswig wrote: Soaking won't accomplish what I'm trying for: to have the adjusters NOT start up with a bunch of slack. This also let me check to make sure they would actually hold once pumped up. No point buttoning it back up with a faulty HLA. I wouldn't worry about that, when you start the engine first time, the wear when idle is minor, they will fill all way with oil relatively soon, just a little "slack" won't matter. Just soak them well before, it will be fine. |
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