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Strange tyre wear - please help 20 Mar 2022 23:07 #233257

  • Blackduck59
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Those tyres also look underinflated, that maybe aggravating the alignment issues.
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Strange tyre wear - please help 21 Mar 2022 07:53 #233262

  • ashmenz0
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Blackduck59
What pressure do you suggest I run?

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Strange tyre wear - please help 21 Mar 2022 07:55 #233263

  • ashmenz0
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Thanks heaps guys
I did a quick (rough) measure with a tape and found the passenger side to be around 30mm longer between the axles than the drivers side. Looks like I’ve got some work to do.
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Strange tyre wear - please help 21 Mar 2022 08:23 #233264

  • jeffo
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Weird tyre wear is typically a caster problem, will need specialist gear to diagnose properly.
Worn shackle pins or broken centre bolt can cause front to rear axle dimensions to differ so you’ll have to check all suspension components before you call on a mobile wheel alignment bloke.
Worn kingpins or loose wheel bearings can also cause strange wear but you would have checked those at annual machinery inspections.
Caster on leaf spring/axle setups is corrected by fitting tapered wedges between axle and spring.
Very common job.
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Strange tyre wear - please help 21 Mar 2022 13:09 #233269

  • JOHN.K.
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If its an airbg Denning,Id have a good look at the front suspension ,as its trailing arms fabricated from light wall tube.........cracks in the chassis mounting of the trailing arms were pretty common.......generally a crack joining the two pivot points.............the moun ting of the fabrication to the Rockwell axle may also be loose.
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Strange tyre wear - please help 21 Mar 2022 16:39 #233275

  • Swishy
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  • If U don't like my Driving .... well then get off the footpath ...... LOL
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FWIW



akso look @ where the spring sits on the saddle @ the axle
Look for movement ... as in a fine line and not sealed with dirt or rust etc
Check all chassis bolts th@ hold the suspension


Cya
OF ALL THE THINGS EYE MISS ................. EYE MISS MY MIND THE MOST

There's more WORTH in KENWORTH
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Strange tyre wear - please help 21 Mar 2022 16:57 #233276

  • ashmenz0
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Hi PaulFH
It’s not air suspension, only springs front and rear, Rockwell I believe.
Cheers
Ash
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Strange tyre wear - please help 21 Mar 2022 20:32 #233281

  • Mrsmackpaul
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Dunno if this will be of any help, it is for Mack trucks if the link works

www.google.com/url?sa=t&source=web&rct=j...BmBG5ZDhO8dUnxe2FVRs

Should open a pdf but who knows ?

Even though it isnt quite right it ahould give you some really good indications of what is or isnt wrong and hopefully take a lot of the guess work out

Paul
Your better to die trying than live on your knees begging
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Strange tyre wear - please help 21 Mar 2022 20:34 #233282

  • PaulFH
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AshmenzO - His business involves correcting power steering faults, which give rise to
many tracking problems, including abnormal steer tyre wear.
Operators spend heaps on other corrective measures, often without result.

Worth viewing some of their U-Tubes if only for information. Paul.
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Strange tyre wear - please help 21 Mar 2022 20:40 #233283

  • mammoth
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Is the rear single or tandem axle?

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