Which Voltage Regulator?


IHC in the early to mid-fifties.

Golden Jubilee
Golden Jubilee

Posts: 4078

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Fri May 24, 2019 2:55 pm

Re: Which Voltage Regulator?

The reason to dis-connect the field wire is if the current or voltage exceeds the setting during the test, the regulator would try of take control of the generator and would end up with a direct short inside the regulator and could burn the points. Also jumping the arm and bat bypasses the reverse current relay, which is ok for a short test, but can burn the commutator if left connected with the engine stopped. Think of holding a electrical motor from turning and leaving it on, it will not take long to damage the motor.
The generator is grounded thru the case of the generator. The Generator is bolted to the block, but the block is mounted to the frame with rubber mounts. The body is also mounted to the frame with rubber mounts. You can't assume that the frame, block, battery and cab are all electrically connected without running bonding straps between all of them. No electrical system has ever been harmed by too many bonding straps. Start by bonding the body to the engine, engine to the frame and battery, body to frame and for good measure, generator case to voltage regulator case.

Rusty Driver
Rusty Driver

Posts: 124

Joined: Thu May 10, 2018 7:15 am

Post Sun May 26, 2019 7:22 am

Re: Which Voltage Regulator?

Question for clarification. There currently is a ground strap between a head bolt and the body. The end at the head bolt is an eye connector but is about an inch long and has a threaded bolt/post. Can I run all my ground wires to this one central spot or am I required to create a loop?

Golden Jubilee
Golden Jubilee

Posts: 4078

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Sun May 26, 2019 8:12 am

Re: Which Voltage Regulator?

You can, but the problem with one point connection for all grounds, is if that one point is bad, you loose all grounding. A little corrosion and you loose all grounds.
With separate ground points, if one goes bad it makes it easier to diagnose. Also it tends to allow separate and redundant ground paths.

Golden Jubilee
Golden Jubilee

Posts: 4078

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Wed Jun 05, 2019 9:14 am

Re: Which Voltage Regulator?

Did you ever get the charging system sorted out?

Rusty Driver
Rusty Driver

Posts: 124

Joined: Thu May 10, 2018 7:15 am

Post Wed Jun 05, 2019 11:44 am

Re: Which Voltage Regulator?

Pulled the water pump almost 2 weeks ago now to have rebuilt. Should get that back in about a week and will try again at that point. I ran the grounds like mentioned.

Golden Jubilee
Golden Jubilee

Posts: 4078

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Wed Jun 05, 2019 11:54 am

Re: Which Voltage Regulator?

let us know how it turns out when it is back together.

Rusty Driver
Rusty Driver

Posts: 124

Joined: Thu May 10, 2018 7:15 am

Post Tue Jul 16, 2019 9:22 pm

Re: Which Voltage Regulator?

Finally got my water pump back. Guy was sick or something. Everything’s back together. No water leaks. Also bought the correct amp VR and my ammeter is showing charge without any ground wires. Time to start driving it.
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