Originally Posted by mmulvenna
No the coach did not just stop. It was turned off and then would not start. We did the original trace with the MONACO techs, pulled the starter and bench tested it. I don't think it is the flywheel, as each starter has started the engines at least once, was then pulled and bench tested.
Guess I am at the point that I need to take it in to someone moe qualified than I.
Thanks for all the responses.
Mike, we're really trying to help here.. but honestly, you need to be a bit more descriptive.
You say the ones that have failed won't bench. Does that mean that while out of the engine and on the test bench that the solenoid engaged and the starter spun while being tested on the bench or that either or both wouldn't activate/engage spin while on the bench?
You didn't respond to "does it click buzz hum or make any noise" while installed in the engine?
If while bench testing it is indeed engaging the solenoid/bendix and spinning the starter then by all means it must only be 1 of but a few things especially since this is your 3rd new or rebuilt unit.....
1) Extremely bad ground or 12+ positive right at the starter hookups.
1a) Have you recently replaced or changed any wiring to the chassis batteries? Maybe any chance you accidentally re-wired them in series rather than parallel? 24v would burn up windings in short order.
2) Flywheel missing teeth or rounded down to the point that there is a dead spot where the bendix cannot properly engage the teeth on the flywheel. A new bendix can get chewed up in short order and may indeed only be usable for just a couple of starts. (thus my question on whether or not it's making any noise whatsoever when installed and attempting to spin over)
3) Starter is wedged against block/trans casting in such a manner that its completely bound thus giving the impression of being bad/unable to spin. Any missing shims perhaps? Did it make any unusual grinding sounds when trying to start?