Thread: Alternator
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Old 09-09-2018, 09:41 AM   #3
rochepoint
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City: Sidney BC Canada
Vessel Name: RochePoint
Vessel Model: 1985 Cheer Men PT38 Sedan
Join Date: Apr 2009
Posts: 1,744
Quote:
Originally Posted by slowandsteady View Post
Late last season the needles on both my tachs, bridge and lower helm, started bouncing. This season neither work and my the gauge says that I am only charging at around 10 volts. There does not seem to be any adverse effects on my batteries. I’m thinking I should get my alternator bench tested. Engine is Perkins 6.354 and I already checked the belt and wire connections. Anyone else experienced this issue?
We had the same problem, turned out to be a bad wire from an oil pressure sender to the exciter terminal on the alternator. This circuit allows the engine to start and develop oil pressure before the alternator puts a charge load on the engine.......

PS...same motor.
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