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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: philo_beddoe on August 16, 2016, 09:39:37 pm
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I'm not near convinced yet, but it seems what i thought a driveline vibe, seems to be gone when i first start down the road and i press ebrake pedal and quickly release it, my whole ride thereafter just seems smooth.
Sometime back i did tighten the cable a little because pedal was going down too far. Of course i cant remember if the vibe started after that or not.
So,,,can the e-brake cause a vibe? Should i just loosen the cable a little?
Ps vibration, not viberation!!
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Parking brake just needs to hold the truck so you can loosen it to where it was. My standard shift trucks all have the parking brake level almost to the floor.
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Ok, sounds good, thanks.
Should i do this, What Vile stated?
http://forum.73-87chevytrucks.com/smforum/index.php?topic=25969.msg215925#msg215925
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Ok, sounds good, thanks.
Should i do this, What Vile stated?
http://forum.73-87chevytrucks.com/smforum/index.php?topic=25969.msg215925#msg215925
Yes. If the cable is too tight it may be making the rear shoe rub. Makes perfect sense if your drums are a little out of round and a slight rub could cause a vibration.
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Ok, will address that!
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Oh yeah, brakes are fine. Noticed busted pwr steering pump bracket, which could be vibe, and at the same time i noticed leak in heater core! Dang!!
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Oh yeah, brakes are fine. Noticed busted pwr steering pump bracket, which could be vibe, and at the same time i noticed leak in heater core! Dang!!
Pretty soon it'll be brand new
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Anyone ever use this modern style power steering pump bracket kit over the old iron oem one?
http://www.ebay.com/itm/391384247557
Here is my old one, busted junk!
(http://uploads.tapatalk-cdn.com/20160823/846b67828ca4f7af294e16bcd3266d2e.jpg)
I know this an ebrake post, but i think my vibe is from a busted pwr steering pump brkt.
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Wouldn't even bother wasting my time with that modern thing. Not worth the hassle and looks like more of pain than its worth.
Don't forget, it won't be OEM which you like so much.
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In my opinion most of the factory power steering brackets are poorly designed. How many of them are misaligned, bent, have a nut or stack of washers spacing them out, cut brackets etc. Then many of them aren't compatible with replacement water pumps due to the variations in designs which is why they get hacked up. I have that same bracket on one of mine here, and a modified factory bracket on the orange one. The factory one will be changed out to that style which simplifies things. If you are trying to keep everything original then don't use an aftermarket bracket and just weld that one back up.
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Well my oem is busted in two places and i cant find another correct oem one. And i need it yesterday! And...this aftermkt one IS black, and...should remove depression and anxiety due to my truck being down. Thats worth gold to me, just ask Zambonie! However,,,in my travels and a little searching, if i come across another oem bracket, i'll probably pick it up. Therefore, if you see one on the net, send it my way. Thanks.
It was shipped today, may have tmrw or friday. Although i have no idea how to install. Could use some more pics at different angles.
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Throw a manual box on there, builds the biceps and simplifies under the hood... I less belt and no PS leaks due to hoses or seals going bad. That is what I would do plus it would keep people from wanting to borrow it.
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One more mishap and thats what i'm doing!
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In my opinion most of the factory power steering brackets are poorly designed. How many of them are misaligned, bent, have a nut or stack of washers spacing them out, cut brackets etc. Then many of them aren't compatible with replacement water pumps due to the variations in designs which is why they get hacked up. I have that same bracket on one of mine here, and a modified factory bracket on the orange one. The factory one will be changed out to that style which simplifies things. If you are trying to keep everything original then don't use an aftermarket bracket and just weld that one back up.
Vile, from your pics, not sure how that aluminum one is bolted on solid all around? On the OEM one the pump is bolted to the bracket in three places, then the bracket itself is bolted to block in two places and the bolt on the right is the adjusting one. Question: Is the aluminum aftermkt one solid all around? (no movement of pulley).
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Tried the aftermkt ps pump bracket...twice! After sweating 5 pounds in a rage of fury, i gave up. I think VZ has a factory one, we may trade. ...and i thought that heater core was gonna be a nasty job.
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Is this the one we can trade, how do you adjust belt tension?
(http://uploads.tapatalk-cdn.com/20160829/d47e48f1c12b8668cc54778db8b5b2ac.jpg)
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PS pump bracket update.
After being down for a week and a half, and money, time and sweat and agony (yes over a stupid ps pump bracket), i took it to a place i knew and had it welded back together for free. The top mounting tab broke off, the large triangle shap left mounting tab was missing all along, thus a new one had to be fabricated. Oh, and they threw a coat of paint on it.
I know there are many applications and sometimes after market parts work. But generally, i hate aftermarket. And no disrespect to those that have custom trucks and engines and such. Nothing beats OEM, they always seem to line up nice, fit and be correct. IMO.
(http://uploads.tapatalk-cdn.com/20160830/1f82c8f48a9a1216f9ca84bad763040d.jpg)
Ps. It took less time for Vile to put a whole new engine in my truck! Good grief! Oh well, this job is done. Next!
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More update:
Yup, as i suspected, the fixed up bracket (oem specs), lined up perfectly, and i didnt need a stack of washers to line it up, only a couple. And....no more driveline vibration, that was the culprit all along! Truck drives real smooth.
(http://uploads.tapatalk-cdn.com/20160830/f11004884751b086541d39606af9d17f.jpg)
(http://uploads.tapatalk-cdn.com/20160830/a34ad598b1625da217b4908daa818cd9.jpg)
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Good job
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Thanks man! Appreciate it. I was never worried a bit nor had any doubt. Lol!!
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Perhaps i jumped the gun. Well the ps pump is perfect, pin straight and true. However, on the way to work i did notice the slow pulsate driveline vibe. Not present when reving in park. Weird though, as before, i mostly notice on the way to work, but hardly on the way home. I wonder if it could be the front u joint, a little sticky perhaps? I think if it were anything else it would be uniform and continuous, at all times.
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What's the difference in ambient temperature between your morning and afternoon commutes?
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Could that possibly make a difference?
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Are you sure you don't have a tiny separation in a tire?
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What do you mean "separation in a tire?" Tires are new, vibe is only under load, accell and even decel.
A while back i did have that leak coming out the weep hole. So i plugged it. Wondering if this could be worn tranny tailshaft bushing, thus tranny output shaft seal. Perhaps incorrect front u joint? But,,the problem is not constant and uniform 100% of the time.
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May have broken ground, actually noticed a vibe on the way home, so i stopped and gave the front of the dshaft a couple of light hits with a hammer, after that it drove smooth as glass. May have freed it up, but will probably go back after changing gears a few times.
When i changed u joints a month ago, the ones i removed were different makes. I put in nice spicer brand, same part number. However, the front was a little sticky. The rear was nice and smooth. I may just have a shop balance it out anyway and even change slip yoke and get the right ujoint on there. Unless the vibe never comes back....which i doubt. But being a sticky ujoint i guess would cause it not to be the same and continuous all the time. Thus, chaiging gears (DFR) would change its dynamic, more free/sticky.
Does this all sound right? Normal?
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I wonder if the ears of the shaft were bent a tiny bit-this will put excess pressure on the u-joint and cause it to be tight and also wear faster. This is why you place some sort of object between the ears when pressing the old joints out.
Sent from my iPhone using Tapatalk
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Good point, i wonder too. And if so, it happend before i took ownership. Regardless, i'm having that bushing and seal done, and at the same time getting the dshaft balanced and have that rectified. I'll mention that at the dshaft shop.
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Well ever since i tapped the front of the dshaft with a hammer, its been real real smooth. I hit it at the yoke. Could the ujoint have been sticking or frozen? Its smooth 100% of the time. But im not holding my breath. At least i broke ground. Figuring out a vibration is like solving a big case.
If it comes back, will try new slip yoke and ujoint.
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maybe not frozen but maybe was squeezed too tight????
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After i installed both ujoints, the rear was perfectly smooth, but the front felt a little tacky. I watched a video made by dana spicer, and they mentioned tapping the ears or collar to free up any tension. I had to do that a few times in a few different places to try and get it to move smoothly, i never did get it perfectly smooth like the rear one. So i put the dshaft back in and went with it, and the same vibe was there as with the old joints, that is until i tapped it the other day, been smooth since. I hope its not the ears on the shaft, i doubt it. If the vibe comes back, i may have a shop install just the front ujoint.
When i looked up the right ujoint application for my truck on the dana spicer website, the front and rear showed different part numbers, however, i installed the same part number for both, the rear is right, and the correct front one would have been too large to fit, which i dont understand. The front ujoint i put in there was the exact size of the one i took out, thus giving me the vibe. I never did tap it when the old was in there though. Thats why i may have a shop just make it right.
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They are the same
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Ok, thanks! That actually helps me a lot. Perhaps the splined slip yoke or dshaft yoke has a little tweak, causing that ujoint to be not perfectly smooth. I can deal with that, knowing is everything, sometimes.
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Oh, now i remember...when i was installing the front ujoint, it was hard to set the two C clips in place all the way. I had to tap them a little, thus a tight joint. Any solutions??
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Taking dshaft to a specialty shop, have'em reset that front u-joint.
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Obviously my fault. Im addressing the same problem on two posts. I will continue my driveline vibe problem on "should this do this" and end this post here.