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| | | | Joined: Nov 2008 Posts: 6 New Guy | | New Guy Joined: Nov 2008 Posts: 6 | Hi all,
49 Chev Truck. I hooked up a 12v battery to my 6v starter. I notice I only get a couple cranks before the starter disconnects from the flywheel. Is this common when running 12v? The motor continues to spin at a rapid rate after, and while it slows it sometimes grinds to a stop.
Let me know,
David | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | starter needs cleanup, especially the nose and gear, maybe a broken spring - 12V runs a 6V starter just fine, if the starter is good
Bill | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Sounds to me like your linkage has worn sloppy and isn't holding the gear all the way into the meshed position. | | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | David,
You state the "motor continues to spin at a rapid rate" which sounds to me like a bad starter drive. The extra punch of the 12 volts has taken the old starter drive and stripped its guts.
A new starter drive is pretty cheap and easy to install.
Stuart | | | | | Joined: Nov 2008 Posts: 6 New Guy | | New Guy Joined: Nov 2008 Posts: 6 | I'll pull it tomorrow, and clean it up. Then re-post the status with some pictures.
David | | | | | Joined: Nov 2008 Posts: 6 New Guy | | New Guy Joined: Nov 2008 Posts: 6 | Hi all,
I took the starter apart, and didn't notice anything out of order, but i could have some play somewhere.
Couple things of note: When the engine runs, the starter continues to grind/drag ever so slightly. If I pull the started pedal back hard enough inside the cab it doesn't drag anymore. The external linkage looks solid.
Do the the internal parts ever wear?
Last edited by David Bartlett; 06/04/2009 7:28 PM.
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | maybe a missing spring on the linkage?
Bill | | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | David,
The starter drive has a sprag clutch inside of it. You can't see this mechanism and it can appear to be fine manipulating it by hand, but when under power, it will slip. This allows the starter motor to spin but not the gear that is engaged with the ring gear.
Stuart | | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | If your starter is still partially engaged when the engine is running then your linkage is not retracting properly. There is a spring on the starter that should take care of that. Running it like that will damaged the drive. | | | | | Joined: May 2009 Posts: 22 New Guy | | New Guy Joined: May 2009 Posts: 22 | I've been running my 6 v starter on 12 v for years in my 46. The starter does spin faster and my starter does not crank more than a couple of times before it dis-engages. Sounds allot like you describe, only no grinding sound. One thhing I did a couple o months ago, put an HEI ignition. Got it from Jim Carters, what a difference! It's unusual to get a couple of cranks before it starts! | | | | | Joined: Jan 2002 Posts: 2,843 'Bolter | | 'Bolter Joined: Jan 2002 Posts: 2,843 | I've been running 12v in my '50 using it's original starter for 6+ years and the gear has always come back into its resting place.
Craig My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear My truck ....... Respect The Rust If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.
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