HI - Disassembling a '64 CB77 for restoration. Frame #108317 Engine #108333. The stator wires are all in good shape, but after degreasing, the ends are all the same color, and I can't tell which are which. I thought I could figure it out with an ohm meter and the wiring diagram, but the resistance readings make no sense with respect to the wiring diagram I have. I could peel back the sheath a little to expose more insulation, but I want to understand this complex and wonderful charging system anyway. For the three possible combinations I get 3.4, 1.7, and 1.7 ohms. I was expecting all three to be different... Anyone have a test procedure? Any errors in the wiring diagram? I did notice that there is a subtle difference from my CA77 diagram in the way the stator wires are connected. Thanks in advance for any help. I have been a frequent lurker during a CA77 restoration I did last year. I really love these old bikes, and look forward to helping out where I can!
Chuck
'66 305 Dream
'64 Superhawk
Stator wiring on '64 CB77
Welcome Chuck,
I had the same problem about a week ago when I was putting my 66 CB77 back together. I found that rubbing the wires with steel wool to get down to the insulation color and using a lighted magnifying glass I could find all the matching connections without any doubts. You should have a pink, yellow and brown wire from the stator. In that same group near the motor, you will also find a Yellow & red, and black & red wires from the solenoid. In addition there is a light green & red wire from the neutral switch. They all looked nearly the same color until I put the magnifying glass to them and found traces of the colored strips. I have seen some wiring diagrams posted here, and you can find one in Bill Silvers Restoration Reference Guide. I connected a battery charger to the battery connections (not connecting the starter cable) and I could test all the lights, horn, and starter switch. The only connections that I could not test were the stator wires, but I am positive these three are correct since everything else works properly. I can' tell you much about the resistances you are reading. If you want to know more about how it works, the differences from the CB and CL, and how to test the output, I would recommend Bill Silvers Engine Repair Guide. This has a section on the charging system. Gunner
Re: Stator wiring on '64 CB77Scrape the sheath and you can see the color. The closer to the stator the better. They all OHM to each other but not the metal case. .....lm
RIDE IT DON'T HIDE IT!
Hi Gunner - Thanks for the reply! I have all of the other wires id'd, its just the three stator wires that look the same except that one is a different gage. I'll try steel wool, but I think the insulation is just old and discolored all the way through. I want to be sure number one that the stator is good although they rarely fail, but I'm also interested in understanding the circuit. I'll look through Silver's engine guide for some insight. I never noticed it, but it looks like the Dream's charging system is set up the same way - to give the battery extra juice when the lights are on. Thanks again!
Chuck
Did you read my message above?. ..lm
RIDE IT DON'T HIDE IT!
Not before I responded to Gunner... Sorry. The three stator wires are all open to ground as they should be, but the resistance values between them aren't consistent with the wiring diagram??? I would just like to understand the circuit, but it may have to remain a mystery which is OK as long as it works. I'll scrape a little tonight and see if there's some color in there... Thanks!
Chuck
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||