Re: 96 Force 120 ELPT Lower Unit ? Now W/ Pics
Your gears, from what I can see, appear to be OK. The rear gland was broken off at the mounting ears and you will definitely need a new or replacement one. The studs are bent and should be replaced too.
BUT: The question remains, WHY? ---It takes a considerable amount of force to break those ears. I would expect broken teeth on the reverse gear and pinion. UNLESS: If the engine was in reverse gear and something became lodged between the prop and gearcase. This would supply enough wedging force to pry out the rear gland, breaking the ears. If I were you, since the forward gear looks grungy anyway, remove the pinion and forward gear. Clean the whole gear pak well and inspect everything closely.
The pieces in the oil are drive dog clutches. I can not see enough of them to comment on their condition. But, there should be only one drive dog clutch which rides on the splined section of prop shaft. The number of pieces I see leads me to believe that the dog clutch was broken during the event. This prop is stainless, ie. strong, and I THINK I see one blade slightly bent near the root at the hub. The reinforces my theory of something wedged between the prop and gearcase. Because of the nature of the accident, you must also remove the prop shaft and check everywhere for cracks. Check the splines to see that they have not been deformed and double check for a crack where the pin passes through the slot in the shaft at the splines. You had better hope that the shaft is not broken or bent. Now, you must also check the splines on both ends of the drive shaft and again, you had better hope that the shaft is not damaged.
So, it looks like, at a minimum, you need a drive dog clutch (very expensive new) and a rear gland (probably not cheap either).