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quick question on 71 trailing arms

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Old Oct 8, 2009 | 06:01 PM
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Default quick question on 71 trailing arms

i was bleeding my rear brakes last night and installing the 10" lowering bolts. so the rear sway bar was disconected and the rear spring was unbolted. i could pull up on the bottom of the rotor and push in on the top of the rotor and get about a 1/4 inch of movement. like the trailing arm would twist alittle. is this normal play. remeber no spring or sway bar attached. thanks
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Old Oct 8, 2009 | 06:28 PM
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Originally Posted by airtime
i was bleeding my rear brakes last night and installing the 10" lowering bolts. so the rear sway bar was disconected and the rear spring was unbolted. i could pull up on the bottom of the rotor and push in on the top of the rotor and get about a 1/4 inch of movement. like the trailing arm would twist alittle. is this normal play. remeber no spring or sway bar attached. thanks
Wouldn't that be the same movement that occurs when you adjust the camber buy moving the strut rods?

David
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Old Oct 8, 2009 | 07:38 PM
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Look and see what else is moving. If the 1/2 shaft is moving that much the stub axles are in trouble.
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Old Oct 8, 2009 | 10:08 PM
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all i saw was the trailing arm twisting a little. half shafts did not move.
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Old Oct 8, 2009 | 10:17 PM
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I miss understood , I thought that just the rotor was moving.

If the TA is rotating, that sounds line the front bushing is wore out.


David
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Old Oct 10, 2009 | 03:02 AM
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r they bad too replace?
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Old Oct 10, 2009 | 03:03 AM
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this may not even matter, but there is a tire rubbing noise coming from the rearend. haven't been able to drive it enough to tell what it is.
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Old Oct 10, 2009 | 08:11 AM
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that tire rubing noise could be the 10" bolt causing spring contact with the tire.
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Old Oct 10, 2009 | 10:19 AM
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it is close betweeen the b olt and tire but it was making that noise with the 8 inch bolt.i also have not seen any rub marks on the tire. using a bfg 255 60 tire.
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Old Oct 10, 2009 | 10:20 AM
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using a composite trw rear spring
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Old Oct 10, 2009 | 10:29 AM
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Originally Posted by airtime
all i saw was the trailing arm twisting a little. half shafts did not move.
If the half shaft did not move, then the strut rod bushings are worn. The trailing arm bushing does not control or restrict twisting motion.
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Old Oct 10, 2009 | 11:44 AM
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Originally Posted by airtime
i was bleeding my rear brakes last night and installing the 10" lowering bolts. so the rear sway bar was disconected and the rear spring was unbolted. i could pull up on the bottom of the rotor and push in on the top of the rotor and get about a 1/4 inch of movement. like the trailing arm would twist alittle. is this normal play. remeber no spring or sway bar attached. thanks
Trailing arms are mounted in RUBBER.
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Old Oct 10, 2009 | 04:41 PM
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is that the steel rod that goes from the trailing arm to the center chunk? those rubber bushings look cracked and old. so that rod is surposed to keep the trailering arm from twisting. looks like poly bushings will have to be ordered. how would you check the mounting bushings for the trailering arms?
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Old Oct 10, 2009 | 06:26 PM
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Originally Posted by airtime
is that the steel rod that goes from the trailing arm to the center chunk? those rubber bushings look cracked and old.

so that rod is surposed to keep the trailering arm from twisting.

looks like poly bushings will have to be ordered.

how would you check the mounting bushings for the trailering arms?
Yes, as does the half shaft.

Yes, It's 'trailing arm' BTW

Poly is not a good choice for strut rods. Use rubber.

Remove the trailing arm from the pocket. Potentially a nasty job.
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