Need knowledgeable OMC gearcase help

[gotboostedvr6]

I have a late 70's 25 hp tiller and am in the process of a complete rebuild... I'm 90% done but while i was replacing the WP the drive shaft slid out there are no clips or pins that hold it in so i doubt it sliding out hurt anything.. i slid it back in and it spins fine but now it makes a gear clack noise when i spin it.

It resombles a gear thats lashed too loose the harder i push on the splines the more "clicky" it gets. this is not the first time Ive seen a omc drive shaft that was removable and never encountered this issue during install.

it is installed in completely and the gear shift works fine... what can i do to remove the click?

 

[gotboostedvr6]

Re: Need knowledgeable OMC gearcase help

this gearcases' exhaust does not exit through the prop

 

[gotboostedvr6]

Re: Need knowledgeable OMC gearcase help

Guys i really really need some assistance, any info at all

 

[gotboostedvr6]

Re: Need knowledgeable OMC gearcase help

i ran the serial number and it came up to be 1984 but it doesnt have throu hub exhaust... kinda weird

 

[Chinewalker]

Re: Need knowledgeable OMC gearcase help

Is there oil in your gearcase? If not, you'll hear the gears lashing a lot more than when full... They will make some noise - nature of the beast...
- Scott

 

[F_R]

Re: Need knowledgeable OMC gearcase help

Not to worry, it's completely normal. Here's why: The weight of the drive shaft is supported by the pinion gear. So that means that it pushes the pinion gear tightly against the forward and reverse gears closing up the normal gear lash. An then you come along and push it down even harder, jamming the gear teeth even tighter.

But in the real world, when the motor is running, torque/thrust forces the gears apart as far as they are allowed to go. That automatically sets the correct gear lash, and they won't make that grinding sensation.

To prove it, hold up on the drive shaft a bit and spin it. The gear noise will be gone.

 

[gotboostedvr6]

Re: Need knowledgeable OMC gearcase help

I would have never ever, ever thought of that way... im putten it together now and will run it tommorrow