David Brodbeck wrote:
Marshall Booth wrote:
David Brodbeck wrote:
General question about serp. belts -- is checking on the smooth side acceptable, as long as the ribbed side isn't cracked? Or should I replace a belt that shows this kind of wear?
The ribbed side of the belt is clearly visible where it loops over the idler while where the belt loops over the PS pump pulley and then descends to the AC compressor, the ribbed surface is somewhat obscured.

If there are any threads dangling at the side or the side of the belt seems to be frayed, I'd change the belt too.

I think you misunderstood my question, due to poor word choice on my part. By "checking" I meant fine, shallow cracks that form a sort of irregular checked pattern on the surface. On one of my cars I have a serpentine belt that has that kind of wear on the smooth side, but the ribbed side still looks good. I'm wondering if I should change it.

I've never seen that pattern on any of the 15-20+ belts I've had on my cars. If the belt seem pliable and supple I expect I'd go with it (but ALWAYS carry a spare belt). I change the belt whenever I do work on the tensioner (unless it's been very recently changed) and keep the best of the old belts as spares. These belts seldom fail without clear visible and audible warning well before they actually do fail, but you do need to pay attention. If the belt makes noise FIND OUT WHY and fix it!

Marshall
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          Marshall Booth (who doesn't respond to unsigned questions)
      "der Dieseling Doktor" [EMAIL PROTECTED]
'87 300TD 182Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi, '84 190D 2.2 229Kmi (retired)

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