Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   Drives and Lower Units (https://www.offshoreonly.com/forums/drives-lower-units-217/)
-   -   Knocking noise XR (https://www.offshoreonly.com/forums/drives-lower-units/360904-knocking-noise-xr.html)

offshorefisher 05-30-2019 11:45 AM

Knocking noise XR
 
So I got my new 200hr XR diesel drives back from being serviced because they were running hot, put them on with fresh Merc. Racing oil and the port Drive is making a tick so hard in neutral that it’s knocking the shift cable around. It also whines like a sewing machine in gear 10x louder than the other. Mechanic says run it, it’ll probably loosen up. I know better, but here we go. Any ideas? Shift fork, preset to tight? They’re under warranty or i would never run it.

VoodooRob 05-30-2019 11:51 AM

Have you checked your shift cable adjustment recently? https://lh3.googleusercontent.com/pr...-rw-pc0xffffff

offshorefisher 05-30-2019 12:39 PM

Adjustment
 
They were adjusted with the special tool about 100hrs ago. New cables and no problems at all with the drives I just removed for routine service.

Wildman_grafix 05-30-2019 12:50 PM

I am impressed you got 200 hours out of a set of XR gears. Do the XR diesel drives use the straight cut gears that the normal XR uses?

offshorefisher 05-30-2019 01:20 PM

Really?
 
Really? I’ve been running X drives for years and getting 1000 hrs at least by under propping and taking care of them. Merc suggested the new XR diesel drives because of the larger gear floor on the straight cut gears vs the helical. So far since new they have burnt oil black in just a few hours of running and now this. I’m gonna have to hand out earplugs. With X drives I can go at least 100 hrs with oil looking good when it comes out. Sorry that I switched.

JaayTeee 05-30-2019 05:05 PM

You should have stayed with the X gears, you’ll never get 1000 hrs out of the XR’s....even at that, they shouldn’t rattle, somethings not right with gear timing/ shift fork...some will whine more than others tho

Keith Atlanta 05-30-2019 05:54 PM


Originally Posted by offshorefisher (Post 4689097)
Really? I’ve been running X drives for years and getting 1000 hrs at least by under propping and taking care of them. Merc suggested the new XR diesel drives because of the larger gear floor on the straight cut gears vs the helical. So far since new they have burnt oil black in just a few hours of running and now this. I’m gonna have to hand out earplugs. With X drives I can go at least 100 hrs with oil looking good when it comes out. Sorry that I switched.

Can I get a hell yeah to the X gears - Amen brother!

What ratio are you running just out of curiosity?

offshorefisher 05-31-2019 08:51 AM


Originally Posted by Keith Atlanta (Post 4689148)
Can I get a hell yeah to the X gears - Amen brother!

What ratio are you running just out of curiosity?

the x drives are 1.81, the xrs are 1.65. Dropped from 21p to 19p. Performance is the same. 315 hp diesel.

Wildman_grafix 05-31-2019 08:58 AM


Originally Posted by offshorefisher (Post 4689097)
Really? I’ve been running X drives for years and getting 1000 hrs at least by under propping and taking care of them. Merc suggested the new XR diesel drives because of the larger gear floor on the straight cut gears vs the helical. So far since new they have burnt oil black in just a few hours of running and now this. I’m gonna have to hand out earplugs. With X drives I can go at least 100 hrs with oil looking good when it comes out. Sorry that I switched.

That is why I said XR gears, not X. Big difference,

offshorefisher 06-06-2019 10:52 AM

Went bang
 
Lasted 40 hours and went bang. I think these things were defective from the start. Left me 90 miles out. These pos drives are coming off.


All times are GMT -5. The time now is 01:21 AM.


Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.