GM 4.3 starter & ring gear issue

  • Posted 27 Jul 2005 01:39 AM
Has anyone run into or have info on a the starter drive not running deep enough in the ring gear to the point that the drive will ride over the top shearing off the nose cone.
Cust replaced engine themselves with an automotive 4.3 but the starter shop say's they are the same for industrial or auto application
Showing items 1 - 4 of 4 results.
  • nsane
  • Ohio, United States
  • Posted 5 Aug 2005 08:14 AM
The problem I have seen multible times on the 4.3 GM motor breaking off the starter nosecone has to do with with the engine rocking back while the starter is being energized. This has only been seen on LP units. The fix is a electronic timer placed in line with the ign. coil that will not allow voltage to the coil untill the engine has cranked for around 1/2 second. Yuor MCFA dealer should be able to come up with the kit for this problem.
  • Posted 9 Dec 2005 09:42 AM
Is this a common problem ?
I have seen one failure like the one mentioned but I noticed the starter had been replaced with an offshore starter and the nose of the starter was approx half the thickeness of the oe starter. An oe starter was put in and the problem was solved. Oh for what its worth I had a GM dealer trace the casting # and it came up as a marine unit.
  • Posted 30 Mar 2006 03:04 PM
JUst FYI, all forklifts and other industrial applications, the enigines are Industrial/Marine (the same). Also I have seen this starter issue to many times to remember. The Ing delay timer is the major fix, it allows the engine to complete a full rotation before allowing the ingnition system to fire, this gets out any excess fuel out of the sylinders from when the motor was last turned off and gets the momentum in the starters favor. Also make sure that the starter bracket that supports the rear of the starter is in place.
  • GHCat
  • Connecticut, United States
  • Posted 1 Jan 2018 06:32 AM
I have been doing this for 25 plus years, I have never seen so many GM 4.3 Starters / Ring gear replacements. We have used Chevy S-10 Pickups with 4.3 motors as our delivery fleet, these trucks go 200,000 miles without a starter, and we start them 30-40 times per day. Mostly Hyster H90, and H110 trucks with GM 4.3 motors come to the shop several times for starter/ring gear. We have some pretty darn good guys at our shop, and it always baffles everybody. We use factory starters/Ring gears, we intall the upgraded brackets, correct bolts, check the shimming with guaged wire, they all fail premature. Cannot figure it out for the life of me. We have seen some trucks come back every year, to pull the motor again. Frustrating.

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