LilRedNeckGirl
Petty Officer 2nd Class
- Joined
- Jan 25, 2010
- Messages
- 184
1985 gm / Mercruiser 181 cid / 3.0 liter/ 140 horse power.
Running twin engines.
the Starboard engine recently had a failure in the drive coupler. The spline on the coupler were totaly gone.... THe rubber to metal bond was fine, just the spline @ all of them, were gone.... So bad, the drive would not pump water, nor turn the prop.
that engine/drive was removed a few times. first to install a SDE drive unit, the second time to remove a broken starter bolt and install new starter. The last time,@ the starter bolt, was just 4 months prior to the spline failure. At that point, the drive couldnt have had 25 hours on it. @ we fished local all last summer, with trips of no more then 15 minutes....
MY QUESTION, how and why , would the spline on the coupler be totaly gone? is this normal wear?
It seems we are talking about a simular set up @ a car transmission spline where the drive shaft connects or into the engine block. Ive never seen or heard of an auto spline being totaly eaten/worn away.
What are the causes of this type of spline failure?
Lisa
Running twin engines.
the Starboard engine recently had a failure in the drive coupler. The spline on the coupler were totaly gone.... THe rubber to metal bond was fine, just the spline @ all of them, were gone.... So bad, the drive would not pump water, nor turn the prop.
that engine/drive was removed a few times. first to install a SDE drive unit, the second time to remove a broken starter bolt and install new starter. The last time,@ the starter bolt, was just 4 months prior to the spline failure. At that point, the drive couldnt have had 25 hours on it. @ we fished local all last summer, with trips of no more then 15 minutes....
MY QUESTION, how and why , would the spline on the coupler be totaly gone? is this normal wear?
It seems we are talking about a simular set up @ a car transmission spline where the drive shaft connects or into the engine block. Ive never seen or heard of an auto spline being totaly eaten/worn away.
What are the causes of this type of spline failure?
Lisa