Will not start now? Ran great for 30-40 minutes
- Willyr
- 2010 crawler
- Posts: 695
- Joined: Sat Jul 17, 2010 3:03 am
- Location: Downeast Maine (North of Ellsworth)
The ground polarity depends soley on the charging system. Everything else could care less. 6 volt systems run on 12 volt, just cant expect 12 volt to run in a 6 volt application. By this I mean if you have a 6 volt system in place and go 12 your fine. You cant use a 12 volt system / wiring harness and expect to take it to 6 volt (wires are bigger on 6 volt).
former owner of a 1956 420c
All help is greatly appreciated.
Proud owner of a project 1952 JD 60
http://www.youtube.com/watch?v=nFehqXVd9z4
All help is greatly appreciated.
Proud owner of a project 1952 JD 60
http://www.youtube.com/watch?v=nFehqXVd9z4
Most (NOT All but most) alternators are internally wired to work in a Negative Ground system. They will only put out a current from a positive voltage at the screw terminal of the alternator. So to use most alternators you have to wire the complete electrical system as negative ground. You connect the screw terminal of the alternator to the positive terminal of the battery and then to the ignition switch. The terminal of the coil that is the same as the ground system you are using should be connected to the wire from the distributor and the other terminal of the coil should be connected to the ignition switch, this is to reduce arc buildup (pitting) on the points.
Bryce
Bryce
No trees were hurt in the creation of this message.
But, many electrons were terribly bothered.
440IC/602, 2-440ICD/831 MM UBU-LP, 445N-LP, 445E-LP, BIG MO 400-M, 4 Star-LP M5-D, M5-LP, M602-LP, M670-LP, G900-LP, G900-D, G1000 Vista-LP Case 580CK
But, many electrons were terribly bothered.
440IC/602, 2-440ICD/831 MM UBU-LP, 445N-LP, 445E-LP, BIG MO 400-M, 4 Star-LP M5-D, M5-LP, M602-LP, M670-LP, G900-LP, G900-D, G1000 Vista-LP Case 580CK
You may want to look at the starter solenoid if you switch from 6V to 12V- I have read that sometimes using a 6V starter with 12V causes the pinion to slam into the flywheel until the solenoid is replaced with a 12V.
However I am not sure on that starter if the solenoid is replaceable or not. Lavoy or others should be able to indicate if that is an issue.
However I am not sure on that starter if the solenoid is replaceable or not. Lavoy or others should be able to indicate if that is an issue.
(1) JD Straight 450 crawler dozer with manual outside blade; (2) JD 2010 diesel crawler loaders; (1) JD 2010 diesel dozer with hydraulic 6-way blade; (2) Model 50 backhoe attachments, misc. other construction equipment
It is just the voltage that is the issue. You double the voltage, you double the watts avaialbe at the same CCA, so there is a lot more energy there. That coupled with the increased starter RPM really slams the starter drive home. On the rare occasion I convert to 12 volts, I use a small battery, 400CCA give or take, and small (4 gauge) cables. This alleviates the problem somewhat. We had a 440 gas forkift once that someone had put a 1000CCA 12 volt battery in. Starting it was real scary, never knew what was going to explode when you pulled the starter lever.
Lavoy
Lavoy
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