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Old 03-11-2018, 02:36 PM
bkervaski's Avatar
bkervaski bkervaski is offline
Join Date: Mar 2017
Location: Birmingham, Alabama
Posts: 849
Default Alternator Belt Alignment


Using the Plane Power alternator from Vans on an IO-390. My belt alignment is about 1/8 inch aft of the flywheel creating an angle and there doesn't appear to be a way to shim it into place, the bracket is non-adjustable.

Am I missing something?
#140376 RV-14A QB IO-390 Thunderbolt
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Old 03-11-2018, 04:22 PM
bluskydreamin bluskydreamin is offline
Join Date: Oct 2015
Location: midwest
Posts: 56
Default pretty common

At the Alternator to engine mount location....Remove some material from the alternator mount bushing and shim the alternator (use washer) in the direction you need for alignment.
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Old 03-11-2018, 06:57 PM
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Bootscooter Bootscooter is offline
Join Date: Jun 2011
Location: Sydney, Australia
Posts: 50

I had this problem, turned out was simply the orientation of the bracket.
Study the Plsne Power install diagram very carefully will fit without shimming.
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