regulator/rectifier's got me buzzed

[eltoroloco]

Has anyone out there performed a test on the rectifier of your xs11. My manual says to check the resistance of 8 pairs of wires coming from the harness off the rectifier. it says to write down all the measurements and then reverse the leads. if the diference between the two measurements on that same pair of wires differs by less than a facor of 10 the unit needs to be replaced

I'm confused, my ohm meter reads 60 ohms one way and the needle doesnt move at all when i reverse the leads. My meter measures up to 10,000 ohms. ( i think) It says they should differ by no less than a factor of ten. so i was expecting somting like 700 ohms after reversing the leads that read 60.

Am i going the right direction? do i need a more sensitive ohm meter? what should the numbers look like?

[randy]

Wow.

8 pairs of wires? How many rectifiers are you testing?

Seriously, though, more info is needed to venture a guess.

[skids]

Re: regulator/rectifier's got me buzzed

"Differs by no less than a factor of 10" means that Ohms one way divided by ohms the other way, should be a value greater than 10. 10000/60 is way greater than 10, so it should be OK for that pair or wires according to your manual.

Originally posted by eltoroloco
if the diference between the two measurements on that same pair of wires differs by less than a facor of 10 the unit needs to be replaced

I'm confused, my ohm meter reads 60 ohms one way and the needle doesnt move at all when i reverse the leads. My meter measures up to 10,000 ohms. ( i think) It says they should differ by no less than a factor of ten. so i was expecting somting like 700 ohms after reversing the leads that read 60.

Am i going the right direction? do i need a more sensitive ohm meter? what should the numbers look like?

[eltoroloco]

there is 8 wires coming out of the unit. the manual states 8 pairs of these wires to test in diferent combinations.
b1 and u
b1 and v
b1 and w
b1 and b2
u and g
v and g
w and g
b and g

these are the 8 tests my manual states to do on the wires coming from the regulator/rectifier.

b1 and u measured 60, the manual says that if i switch the black and red leades of the meter its supposed to read a resistance that is no smaller than 10 times than of the first. or at least 600. I'm not getting any readings even close, off my meter for that matter.

[randy]

Let me guess. You're using a digital auto-ranging meter?

Have you tried an analog meter? The digitals can sometimes give confusing readings when testing diode arrays.

I would also concur with skids, AT LEAST a factor of ten is what you found, so you should be OK.

What are the symptoms that you're trying to troubleshoot?

[eltoroloco]

The problem is that as i run the bike the battery is not getting charged. i rode for about 45 min, stoped the bike for 10 min and then it had nothing left to start up agian. I checked out the alternator (generator) and its within spec. i thought the regulator rectifier would be the next suspicious area to inspect.

[randy]

electroloco,

You're going in the right direction, all right. BTW, is your tach working?

[skids]

Do not just assume that the battery is in good shape! You can sometimes charge a weak battery to give it a "skin charge" (meters good) but the battery may have little if any capacity for deep charging. A load test is a good way to check a battery. I don't pretend to know the correct numbers, but I think as you hit the starter (battery fully charged), you should show something like 8 or 9 volts across the terminals.

[ratbyk]

Load Test

I believe the load test numbers are;
Using the starter as a draw that after 10 seconds the battery should not have dropped below 10.5 volts.
Ken/Sooke