arc40s

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arc40s

Member
Question: my 1941 Ford Sedan Delivery 3 speed on tree w/ 3:54 rear end has a loud whine while decelerating. no noise under acceleration orcoasting with clutch depressed. how do I determined if noise from rear end or transmission?
 
If you're lucky it might just be pinion nuts backing off. If not too late it might be possible to tighten them. The loud noise is caused by the helix angle pulling the pinion into tighter mesh with the ring gear.

It could be something else, but that would be my first investigation.

If it were the transmission it would sound different in different gears. That said, it may sound different in each gear due to heavier loading with lower gears.
Mart.
 
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