jimg
Veteran Member
- Joined
- Jun 5, 2003
- Messages
- 2,039
Thanx for reporting back...I wondered how you were getting along w/ fixing the problem.
TN75 - blowin' fuse and...
- Thread starter yeehaw
- Start date
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LeFever
New member
Hi TN75 I have a TN60A doing the same problem after replacing the fuse works for a day or so then bang out it goes again. Bat. light comes on shut it off start back up light is off so i hooked my volt meeter up to alt has good 12.6 volts then i start it and no charge nd no light i leave it running put fuse in it alt goes to charging. i pull the fuse back out bat light comes on but alt. keeps charging. until i shut off tractor and start back up then no charge until i put fuse back in. my question is can the alt be causing the fuse to blow after it gets hot?
It has been a long time since I have read up on how an alternator works, but IIRC, by exciting the alternator (when you put the fuse in) you are starting the charging process.
HOWEVER, the early TNs will exhibit a 'charge lamp lit' at low rpm at start up until the engine is rev'ed up enough. IIRC there is a technical bulletin to replace a resistor or diode that fixes this (presumably by exciting the alternator at a lower rpm). I have never looked this up, so give mine a little bump in rpm until the lamp goes out (I have a first year machine).
HOWEVER, the early TNs will exhibit a 'charge lamp lit' at low rpm at start up until the engine is rev'ed up enough. IIRC there is a technical bulletin to replace a resistor or diode that fixes this (presumably by exciting the alternator at a lower rpm). I have never looked this up, so give mine a little bump in rpm until the lamp goes out (I have a first year machine).