 Engine test stand question, How to wire alternator |
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| Cevan |
 Dec 24 2009, 09:33 AM
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#1
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Senior Member  Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351  |
As I sit here removing head studs from my case halves wondering what the hell I have done with engine parts scattered over several square feet of my cellar, I decided I would do the initial cam break-in on my engine/tranny dolly.
How does one connect the alternator? The alternator has one heavy gauge wire that goes to the starter and a 3 wire plug that goes to the voltage regulator on the relay board. Is the relay board/voltage regulator needed for the engine test stand? |
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| Spoke |
Dec 24 2009, 10:18 AM
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#2
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Jerry Group: Members Posts: 7,268 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None 
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When I tested my engine on a stand, I just used the car battery connected using jumper cables and connected my battery charger to the battery to maintain battery voltage and charge.
I wouldn't connect the alternator unless you bolt in the battery connections. Connecting the way I did with jumper cables may allow momentary disconnects of the battery during testing. If the alternator is connected at this time, it is possible to damage the alternator by what is called a load dump. Load dumps happen when a discharged battery is being charged by an alternator and the connection of the battery is momentarily disconnected. This is one of the reasons that a car should not be operated with the battery removed. |
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Posts in this topic
Cevan Engine test stand question Dec 24 2009, 09:33 AM
aircooledtechguy It's not necessary to hook it up at all unless... Dec 24 2009, 09:55 AM MrLeeS I agree, if you have doubts as to the functioning ... Dec 24 2009, 10:06 AM ejm Just leave the belt off. Dec 24 2009, 11:34 AM Cevan A consensus!! Excellent! Thanks ever... Dec 24 2009, 12:16 PM
r_towle Another option is to rig up the relay board with t... Dec 24 2009, 12:23 PM |
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