How to grease drive train on LX 570?

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On Zerk No. 2, how do I know that it's filled correctly if there is no sign of any grease coming out like other zerks? I have driven the vehicle for about four miles already. If I unscrew the zerk and lower the vehicle, will the extra grease came out?

As for the other zerk, I found this Youtube and he showed this diagram. So, I think I only did the rear drive shaft and still need to do the front shaft. What I may have to do is removed all the covering to see it.
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Charlielj said:
On Zerk No. 2, how do I know that it's filled correctly if there is no sign of any grease coming out like other zerks?
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I don’t want to sound like a dick but this was addressed in posts 5, 7, and 12 of this thread. The splash shields for the front shaft at least once also.

I would strongly advise thoroughly reading the posts, reading the linked threads, then getting under the truck and make sure you understand the whole procedure before putting any more grease into anything.

You most likely didn’t harm anything but if you had kept going with number 2 it would be possible. You will end up with a bunch of excess grease slung under your vehicle though.
 
bloc said:
I don’t want to sound like a dick but this was addressed in posts 5, 7, and 12 of this thread. The splash shields for the front shaft at least once also.

I would strongly advise thoroughly reading the posts, reading the linked threads, then getting under the truck and make sure you understand the whole procedure before putting any more grease into anything.

You most likely didn’t harm anything but if you had kept going with number 2 it would be possible. You will end up with a bunch of excess grease slung under your vehicle though.
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Lessons learned...sure not going to do that again. I hope it's fine since I don't think this vehicle, which have over 179K miles, probably has never been greased.
 
Charlielj said:
On Zerk No. 2, how do I know that it's filled correctly if there is no sign of any grease coming out like other zerks? I have driven the vehicle for about four miles already. If I unscrew the zerk and lower the vehicle, will the extra grease came out?

As for the other zerk, I found this Youtube and he showed this diagram. So, I think I only did the rear drive shaft and still need to do the front shaft. What I may have to do is removed all the covering to see it.
View attachment 3433034
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the photo shows 4 u joints which is correct for what we have on our cars but there are only 2 slide yokes. one on each driveshaft.

You will probably not see any grease come out of the slide yokes but as you pump more and more grease into the slide yoke it will try and push the slide yoke joint apart. When you drive the slide yoke needs to be able to compress and pull apart slightly with the movement between the axle and transfer case. When you pump too much grease into the slide yoke it prevents it from compressing. If you pumped the slide yoke with so much grease that its started to force the joint apart them you also run the risk of messing up bearings in the transfer case and diff because now they are being loaded differently since the driveshaft is now pressing into the transfer case.
 
Mrtwooooo said:
the photo shows 4 u joints which is correct for what we have on our cars but there are only 2 slide yokes. one on each driveshaft.

You will probably not see any grease come out of the slide yokes but as you pump more and more grease into the slide yoke it will try and push the slide yoke joint apart. When you drive the slide yoke needs to be able to compress and pull apart slightly with the movement between the axle and transfer case. When you pump too much grease into the slide yoke it prevents it from compressing. If you pumped the slide yoke with so much grease that its started to force the joint apart them you also run the risk of messing up bearings in the transfer case and diff because now they are being loaded differently since the driveshaft is now pressing into the transfer case.
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So, would you suggest I loosen the zerk, lowers the vehicle so the grease came out, then jack up the vehicle and re-grease this area with 5-20 pumps?
 
I would recommend that, up to the part about adding grease. It doesn’t need any more, even after you push the excess out.

Be very careful not to over tighten the zerk when you reinstall. It is a very small tapered thread, so it won’t have a clear spot it is “tight enough”. Maybe even consider counting the number of turns until it comes out and reinstalling to match the position.
 
bloc said:
I would recommend that, up to the part about adding grease. It doesn’t need any more, even after you push the excess out.

Be very careful not to over tighten the zerk when you reinstall. It is a very small tapered thread, so it won’t have a clear spot it is “tight enough”. Maybe even consider counting the number of turns until it comes out and reinstalling to match the position.
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Thanks, will definitely do that tonight then. Do I totally remove the zerk out or just loosen the zerk enough to allow excess grease to leak out?

...just curious, what size wrench is use to open this zerk?
 
Charlielj said:
Thanks, will definitely do that tonight then. Do I totally remove the zerk out or just loosen the zerk enough to allow excess grease to leak out?

...just curious, what size wrench is use to open this zerk?
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Remove it. Wrap area with a rag. Lower suspension. Raise suspension. Clean up any grease (it's possible none comes out.) Reinstall zerk.

6 or possibly 7mm IIRC.
 
bloc said:
Remove it. Wrap area with a rag. Lower suspension. Raise suspension. Clean up any grease (it's possible none comes out.) Reinstall zerk.

6 or possibly 7mm IIRC.
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Okay, I finally performed this suggestion and got some grease out the size of a No. 2 pencil eraser out. Thanks, @bloc!

Greasing the front shaft will have to be another day but thank you so much for those of you who volunteer your own time to help me out.
 
Just curious, if the grease in the No. 2 zerk has no way get out, and I have to manually remove the zerk for the excess grease to leak out , how does the grease in this area gets low? From a few of the YouTube videos I've watched, greasing driveshaft is done around the time oil change is done. Thus, I am wondering how it gets low.
 
It deteriorates over time like any lubricant. Dirt, dust plus heat and friction makes it dry up and wear out.
 
Charlielj said:
Just curious, if the grease in the No. 2 zerk has no way get out, and I have to manually remove the zerk for the excess grease to leak out , how does the grease in this area gets low? From a few of the YouTube videos I've watched, greasing driveshaft is done around the time oil change is done. Thus, I am wondering how it gets low.
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You’ll see over the next few thousand miles that it’ll slowly get slung out onto the bottom of your vehicle (and the road). This is normal. There is a seal on the slip yoke that keeps dirt and water out, and most of the grease in, but as the suspension cycles it does allow a bit out through that seal.

The splines and seal are tight enough that the grease can’t come out quickly, which is what would need to happen if it were totally full and you hit a large bump.
 
One thing I did instead of removing the zerk on an overfilled yolk is take a safety pin and press on the zerk and it squirts out the grease. If its squirting out a lot, that means you definitely over filling it and need to make sure that pressure is relieved. Heard in the forum that it has adversely impact the transfer case.
 
Charlielj said:
So, would you suggest I loosen the zerk, lowers the vehicle so the grease came out, then jack up the vehicle and re-grease this area with 5-20 pumps?
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Again, too much!
5 will do it. Remember, there will still be residual grease in there.
When it comes to the slide yokes (1/ driveshaft) more is NOT better.
 
Charlielj said:
Lessons learned...sure not going to do that again. I hope it's fine since I don't think this vehicle, which have over 179K miles, probably has never been greased.
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As enthusiasts, we often get carried away and try to do "more better". Interpreting that If a little bit is good, more is better.

I'd say 75% of all Toyota body on frame vehicles probably never get lubed even with regular dealer service. They are notorious for skipping it. Yet these vehicles go hundreds of thousands of miles.

Performing any TLC at all here will put you way ahead. Don't get caught up in "best" and overdo something, where "good enough" if often better. Best can often land in service induced failures.
 
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