Posted by John T on August 07, 2009 at 04:38:22 from (66.244.97.31):
In Reply to: Ammeter vibrates posted by spiffy1 on August 06, 2009 at 20:24:16:
A "Jumpy" ammeter can be caused GENERALLY by any or more of the following:
Worn short genny brushes
Weak or stuck genny brush hold down spring assemblys
The gennys commutator bars need the mica seperation insulators cut down
Carboned or oiled up genny commutator
Burned or carboned VR relay contacts
Bad/resistive VR ground
A loose or carboned wiring connection or ground
HOWEVER MORE TO YOUR SPECIFIC PROBLEM: The part about dead grounding the field making her settle points toward a VR relay contact problem (carboned or have oil or residue on them CLEAN THEM) or the VR itself isnt well grounded CHECK THE VR's GROUND !!!!!!!!!
On that new VR I would GENTLY give the relay contacts a good contact cleaning and non abrasivley clean/buff/polish them and dry them
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