Adjust Valve Lash (Diesel Engine - Solid Valve Lifters)

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2 жыл бұрын

After a fresh rebuild, I can finally adjust the Valve Lash on the rocker arm assembly of the Yanmar 3-cylinder diesel engine. For this, I will need to set each piston to "Top Dead Center" and make sure the gap between the rocker arm and the valve cap is set to the specifications of the Yanmar Service Manual.
Adjusting the valve lifters in this manner can be done to ANY solid lifter engine setup! (This is not the same as a hydraulic valve lifter!)
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Timestamps:
00:00

Пікірлер: 35

@xyndijade2864 Жыл бұрын

THANK YOU THANK YOU THANK 1000 TIMES THANK YOU! I am a deisel mechanic, but i had never seen one of these until i bought a chinese tractor. Usually the no. 1 cylinder is at the front, hence my 3 day long confusion. I did what you said at the rear one, and BANG it fired right up! Thank you so much! I'd kiss you if i could!

@WorkshopRebuild Жыл бұрын

I am happy to hear that you were able to get your engine sorted out with help of this video. Thank you for your amazing comment!! Regards Andreas

@Matthew-sc1 2 жыл бұрын

Another helpful video for one of my engines. I never checked the valve lash on my tractor and maybe it's time to do that now! Thanks WR!!

@WorkshopRebuild 2 жыл бұрын

I'm glad you find this video helpful and hopefully you can check your valve lash on your tractor. It's important to do this every now and then to reduce engine wear in case the gap becomes bigger. -Andreas

@scottyscotty7785 3 ай бұрын

Great video, clear and informative, thanks!

@WorkshopRebuild 3 ай бұрын

Thanks! I‘m glad you found this video informative! Regards Andreas

@westhuesfabian Жыл бұрын

Very Food explaination buddy🙂

@WorkshopRebuild Жыл бұрын

I appreciate your feedback! Thanks a lot😃👍🏽

@rajbahadur2162 Жыл бұрын

Good video brother

@WorkshopRebuild Жыл бұрын

Thank you for comment! I‘m glad you enjoyed this😎

@briant4162 Жыл бұрын

Thank you my friend dropped a push rod now we have to fix it

@WorkshopRebuild Жыл бұрын

Did you drop it before or after watching this video? Was your pushrod seated properly in the valve tappet and on the adjustment screw (rocker arm)?

@briant4162 Жыл бұрын

@@WorkshopRebuild his push rod is gone down in the oil pan I think don't know how it happened but it didn't come threw the valve cover

@WorkshopRebuild Жыл бұрын

I am really not sure how that is possible, because there is literally no area for the rod to drop down into the oil pan. the bottom of the pushrod must sit on the valve tappet and besides that, there is only little passageways for oil to trickle down into the oil pan. Let me know if you get an update from him, I'd be curious to know what happened! Regards Andreas

@briant4162 Жыл бұрын

@@WorkshopRebuild I'll let you know what happens

@jasoncraig3752 2 жыл бұрын

Awesome video Andreas! Thanks for showing this! Could you do this on a flathead engine? Preferably the Kohler kt17.- Jason.

@WorkshopRebuild 2 жыл бұрын

This technique can be applied to almost any engine with solid valves lifters, so I really hope this will be beneficial for many viewers. The KT17 on the other hand does have a different setup and I actually still have one around that I could do a video on. I'll see what condition it is in and give you an update. Best regards -Andreas

@fabianschnitzker5224 12 күн бұрын

Hallo, I have a question. I am repairing a Yanmar 3D72-2b engine. I would like to know what the valve clearance is for this engine, please, and the sequence.

@whatsnextgarage 2 жыл бұрын

Good morning, I think I need a little more explanation. Top dead center is both valves shut and the piston fully extended at the top of the stroke. I’ve heard top dead center on the exhaust stroke vs compression stroke. Great video love the detail and btw your engine looks like a show piece! Perhaps I answered my own question 🤦.

@isaacperezR503 Жыл бұрын

One question, my brother, what is the oil pressure of the Yanmar 4TNV88 engine?

@WorkshopRebuild Жыл бұрын

The specs for a 4TNV88 are between 20-55PSI. 55PSI should be at your highest rpm setting of your engine. At idle your oil pressure will be lower, but make sure it's not too low! I hope this helps. Cheers

@dc-wp8oc Жыл бұрын

You seem to indicate that tightening the nut, closes the gap on the feeler gauge @7:10 - 7:20. It does not. The nut tightens to hold the adjusting bolt in place. It is the bolt, adjusted by the flat head screwdriver, that adjusts the gap. That is why you were not feeling any difference before and after "tightening" the nut.

@WorkshopRebuild Жыл бұрын

I am aware that with the adjusting bolt, you can raise and lower the gap on the rocker arm. Once you tighten the nut, you will secure the adjusting bolt to the rocker arm so it does not move. If you have ever set your valve lash before, you will know that each thread has a certain tolerance. As you tighten the nut you're actually lifting the adjusting bolt away from the push rod, which leads to a larger gap. To compensate for this tolerance you can turn the adjusting bolt and nut at the same time to achieve your desired valve lash. I hope this clarifies what I did in this video. Regards Andreas

@snm9878 7 ай бұрын

Do you know where I can get engine parts for a 3T75U yanmar 1610D tractor?

@WorkshopRebuild 7 ай бұрын

I've had great success sourcing parts through, Friday Parts. Check out their website to see what you can find: www.fridayparts.com/catalogsearch/result/?q=3t75u I hope this helps. Regards Andreas

@flyhigh8205 5 ай бұрын

Hello I need help setting the spill timing on my yanmar please help

@WorkshopRebuild 5 ай бұрын

You have to adjust everything to cyl. #1. (Closest to your Flywheel) Your injector (injection pump) must provide fuel about ~15degrees before TDC on the compression stroke. Some engines range between 12-18degrees, so 15 is right in the middle. I hope this helps. Cheers

@headpainter1 Жыл бұрын

Aren't diesels 4 stroke engines? Intake, compression, power then exhaust. Just no spark plug. You said set/ check valve lash then rotate engine 180 degrees then check again. Wouldn't it be on exhaust stroke at that point and valve under compression? Just trying to get it right in my head. Thanks alot.

@billklass7802 Жыл бұрын

Ever heard of a Detroit

@headpainter1 Жыл бұрын

@@billklass7802 amateur not that familiar with diesels. Just gas engines and trying to get the basic understanding of diesel principles.

@headpainter1 Жыл бұрын

Ok. Google is a wonderful thing. Evidently they make 2 and 4 stroke diesels. Interesting.

@renzo123123able 11 ай бұрын

he said 360 degrees so it would have done two strokes and either goes from compression to power or power to exhaust..so no pressure on the rockers

@isaacperezR503 Жыл бұрын

Good morning, I have a question. I am repairing a Yanmar 4TNV88-BSTX engine. I would like to know what the valve clearance is for this engine, please, and the sequence.

@WorkshopRebuild Жыл бұрын

Hello, the valve clearance on your 4TNV88 is: Intake: 0.006" - 0.010" Exhaust: 0.006" - 0.010" These must be set when the engine is cold and your first cylinder (NR.1) is closest to your flywheel. Here is more information on your engine if needed: tractorgearbox.com/yanmar_4tnv88_engine_specs.html Regards Andreas

@isaacperezR503 Жыл бұрын

@@WorkshopRebuild Thank you very much for the answer you have helped me a lot I appreciate it blessings