Charging issue..battery receiving max 12.8v at 50m/h - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 8 (permalink) Old 06-07-2008, 11:39 PM Thread Starter
 
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Thumbs up Charging issue..battery receiving max 12.8v at 50m/h

I did all the tests and found the rectified is fried.
Also the resistance between the Stator wire shows 0.8, does this mean my Stator got f ?

Last edited by blanchard; 06-12-2008 at 12:32 PM.
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post #2 of 8 (permalink) Old 06-08-2008, 01:19 AM
 
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Hi blanchard

The resitance of the stator coils are not too far off spec, I think the spec from memory 0.4 ohm to 0.6 ohm. (others I'm sure will confirm soon)

The other test is the measure the resistance between the stator wires and the negative/frame, these readings should be infinity. This will show if the insulation in the coils is failing.

Regards

DaveT
Kuala Lumpur
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post #3 of 8 (permalink) Old 06-08-2008, 02:32 AM
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Clymer's and the Kaw repair manual list the resistance as between .34 an .52 Ohms. The Electrosport Fault Finding guide says greater than .5 but less than 2.0 Ohms is within tolerance. I just put in a new stator (Rick's) and it shows around .8 on all combinations of the three leads. 0L for each to ground. The other test is to check the AC (not DC) voltage. You should be getting 50 VAC or better on every combination of the leads with the engine rev'd to 5000 RPM. Also, as long as you are fiddling around in that area, I would suggest that you install 15A fuses on each of the leads. Based on my read of previous threads, fusing the stator gives you an added amount of protection, although not foolproof, that can save you from having to pull/tilt the engine. Good luck! I hope it is just the R/R!

Chris
Wayne, NJ
1989 VN750-A5
VROC #27781
-Replaced/Fused Stator & Replaced/Relocated R/R (15K mi.)
-MF Battery
-De-Goated/Re-goated
-Coastered
-Splines Lubed
-Stebel Nautilus Horn
-AutoMeter 2" VOM
-Silverstar Headlight
-Refinished Gauge Rings and Mirrors(Flat Black)
-Refinished Swingarm/Lubed Pivots
-K&S Turn Signals Clear Cover/Amber Bulb
-Kenda Kruz 110/90-19 front 170/80-15 rear
-Clear Alternatives LED tail light
-Plexifairing III
-Willie & Max Saddlebags and SissyBar Bag
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post #4 of 8 (permalink) Old 06-08-2008, 04:51 PM Thread Starter
 
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I put not even 200-miles, looks like the R/R is fried.

"Also I could feel the R/R getting over heated quick"

I spend lots of time and money already on this charging system. New Westco sealed battery, new Stator and R/R. I even relocated the R/R and fused the stator wires, as recommended in this forum.

I purchased the Stator and R/R from Willie’s Cycle oct, 2007. any one any idea about the warranty on their R/R?

Anyone having a spare R/R willing to sell? Please let me know.

Last edited by blanchard; 06-09-2008 at 06:45 AM.
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post #5 of 8 (permalink) Old 06-09-2008, 08:52 AM
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I "thought" they offered a one year warranty but call Customer Service 800-334-4045.

Dianna
Conway, AR
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)
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post #6 of 8 (permalink) Old 06-09-2008, 09:42 AM Thread Starter
 
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Yes, I just got confirmation from Willies. There is a warranty on the rectifier, they agreed to replace it.
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post #7 of 8 (permalink) Old 06-22-2008, 01:08 AM Thread Starter
 
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It’s just a bad R/R. i have been enjoying my ride for the past two day. I connected my M/M directly to the battery and tested it, battery receiving good juice.

Will need to buy a decent volt meter soon, any suggestion?
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post #8 of 8 (permalink) Old 06-22-2008, 04:17 PM
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I use a Craftsman 82334. I am by no means an expert, but it has performed very well over time for me, including my battles with the charging system. It has the 20A capacity which was the limitation of my previous mm. It is a bit on the pricey side.

Chris
Wayne, NJ
1989 VN750-A5
VROC #27781
-Replaced/Fused Stator & Replaced/Relocated R/R (15K mi.)
-MF Battery
-De-Goated/Re-goated
-Coastered
-Splines Lubed
-Stebel Nautilus Horn
-AutoMeter 2" VOM
-Silverstar Headlight
-Refinished Gauge Rings and Mirrors(Flat Black)
-Refinished Swingarm/Lubed Pivots
-K&S Turn Signals Clear Cover/Amber Bulb
-Kenda Kruz 110/90-19 front 170/80-15 rear
-Clear Alternatives LED tail light
-Plexifairing III
-Willie & Max Saddlebags and SissyBar Bag
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