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RWD - 700/900 Alternator Fixing Nut

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700/900 Alternator Fixing Nut

My alternator belt kept loosening; I re-tensioned it and re-torqued the fixing nut but the problem recurred. After looking at this, I found that the M8x1.25mm nut has serrations on the back that lock it tight, preventing slipping. Mine were seriously worn. Bought some new stainless nuts on EBay ($9 for a bag of 25) and problem solved. Apparently these take only a limited number of re-torques before wearing down and my 745 is 29 years old, so it was time.

Serrated Hex Flange Nuts: https://www.ebay.com/itm/25-M8x1-25-Metric-JIS-Serrated-Hex-Flange-Nuts-Class-10-J-I-S-B1190-12mm-Hex/151141682143?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649






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New 1 700/900 Alternator Fixing Nut
posted by  Steve  on Thu Feb 14 20:35 CST 2019 >

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