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How to keep lca's/phr quiet

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Old 07-21-2007, 03:19 PM
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Default How to keep lca's/phr quiet

I know there is prob a lot of post on this but what do you know the search is down again. Ive lubed the bushings several times and I still get that crunch noise from the poly bushings. I used the good lube also (super lube) ive sprayed them and used a air powered grease gun on the grease fittings. Is there some kind of trick to this?? My friend has some and his dont make any noise I dont get it. I have the UMI poly/rod lca's and a spohn poly/poly phr.
Old 07-21-2007, 08:08 PM
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Put WAYYY too much grease in there. Make grease come out of the bushing. That's how I keep mine quiet, none of this "just 1 squirt" bs.
Old 07-21-2007, 08:11 PM
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I used alot if you use too much the bushing will bulge. Maybe I need to use one that works by hand and not by air.
Old 07-22-2007, 04:26 AM
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Did you tighten them with the suspension under load?

Use lots of grease
Old 07-22-2007, 07:03 AM
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The noise is coming from the rodend not much you can do.
Old 07-22-2007, 09:36 AM
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Originally Posted by joblo1978
Did you tighten them with the suspension under load?

Use lots of grease
Yes I did.
Old 07-22-2007, 09:37 AM
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Originally Posted by 2_wacko
The noise is coming from the rodend not much you can do.
Noise is not coming from the rod end I think the hand pump grease gun should do it.
Old 07-22-2007, 11:15 AM
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I'm getting the same results. Just installed a 9in with UMI T/A, T/A relocation kit, LCA's, PHB. all single adjustable....and this thing is driving me nuts. You can hear/feel a banging on every little bump. I pumped them with grease until it came out everywhere. If this is how its going to be, some of this **** is coming off.
Old 07-22-2007, 02:39 PM
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My stuff is fine no clunking or anything just on bumps at slow speeds I hear the noise from the poly bushings. Im going to grease them really good with the hand pump grease gun next time I have the car out till its running out all over like said and hopefully that should do it. If you hear/feel banging something isnt tight or something is hitting.
Old 07-22-2007, 02:59 PM
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... mine sounded like the polyurethane bushing. I lubed them, bled the grease out and re-greased ... did it all. It turned out to be the kevlar clutches in my posi unit. I ordered my 12-bolt with the HD Eaton posi option and when a shop replaced the pinion seal, they used the synthetic rearend lubricant ... not the mineral-based non-synthetic lube which Eaton says is required. It was driving me NUTS!!! Everytime I would slow down and slightly turn right or left, I'd get gear chatter and that friggin' poly-urethane binding sound.

I even had the rearend completely disassembled and they found nothing wrong with the rearend components. It was just completely torn down again and nithing wrong. Finally figured out it was the type fluids they had used in it to begin with. The fluids are getting changed Tuesday of this week.
Old 07-22-2007, 04:20 PM
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Everthing is tight. I've been under it 20 times, checking it out. Just got done doing it again...with no results. Took it for a drive and just sounds real ridgid. Every little bump sounds like a beating drum. not harsh but enough to **** me off.
Old 07-22-2007, 04:43 PM
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Well only thing diff from mine is your TA and 9". Does it sound like its coming from the TA or what.
Old 07-22-2007, 07:24 PM
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ok dumb question under load do you mean put the car back on the ground and crawl under there or after you swap them and take the jack from under the rear tighten them again
Old 07-22-2007, 07:30 PM
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Yeh the easiest way would be on a 4 post lift. No way your getting under there to tighten them with it on the ground it needs to be up some.
Old 07-22-2007, 08:07 PM
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No, it seems to be either the PHB or LCA's. Tomorrow i'm going to put the stock ones back on, to make sure that is what the noise is coming from.
Old 07-22-2007, 08:26 PM
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Mine dont make any noise. I used my dads hand pump grease gun. Dont even know what kind of grease. He thinks it was synthetic in there.
Old 07-29-2007, 08:24 PM
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Greased them with the hand pump gun yesterday and the bastards still make noise. If I grease them any more the bushing was starting to pushout. How much are you guys greasing yours??
Old 07-29-2007, 09:15 PM
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Originally Posted by Ruckus46Gt
ok dumb question under load do you mean put the car back on the ground and crawl under there or after you swap them and take the jack from under the rear tighten them again
Well, without a lift you'd place jack stands under the axle to put the suspension under load while giving you enough room to tighten everything up.

I just installed my rod/rod PHB and poly/rod LCAs from UMI this past Friday night, and spent a lot of Saturday tweaking and tightening things to remove all the rattles. Today was rattle and squeak free (and I think I ended up putting 7 pumps of lube in the LCAs.

Two things to keep in mind. Make sure the rod ends on the LCAs are properly lined up with the front mounting point. If they're off at too much of an angle either way they're going to bind up when the axle rotates. Also, make sure all the jam nuts are tight as well. While the LCAs aren't at risk of coming apart, mine weren't fully tightened from UMI and both sides loosened up and were one source of rattling until I tightened them up.
Old 07-29-2007, 09:23 PM
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I put a lot of grease in mine in at a loss. The grease didnt start running out the side of the bushing or any but the bushing was starting to expand out.
Old 05-14-2008, 09:54 AM
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anyone make an adjustable rubber bushing phr? i know i dont have a caddi but i have enough squeeking as it is. i thought the rod ends were suposed to be quieter. looks like im not buyin those.



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