Started the cleaning process and remembered that I should take the video. Very good example to show the sticky inconsistent LMA that will cause tappetty and random frequency noise. Removed rocker shaft and LMA. Because of the thick black oil, even removing the rocker shaft felt some resistance even though none of the primary/secondary arms moved when the mid one was pressed. ...
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Doing bit of catch up updating the blog as I have been busy this week and will be busy over the weekend as well. Later spec PCB-305 version LMA on the left and old A02 design that came out from this engine on the right. ...
Updated 07-09-2013 at 09:42 PM by Kaz-kzukNA1
Checked the smooth movement of each rocker arms before removing the rocker shaft. As you can see, none of the primary and secondary arms should move when the mid one was pressed/released. May not be able to feel it from this video but as reported earlier, all of the LMA were getting soft and some of them were much weaker than the others. ...
Same process for the rear bank. Cleaning process done, new LMA (from SoS) installed, rocker arms back in place and ready for the cam shaft installation. Torqued the sealing bolt for the rocker shaft with new washer. ...