4 Engine Coupler Failures, Why???
05-30-2007 | 02:13 PM
#21
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Joined: Sep 2001
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From: Deland, Florida
From a machining standpoint...how about checking the alignment when rotating the engine every 90*? maybe the coupler is crooked....internally...they could be aligning it as it sits...but as soon as the engine starts the runout will kill everything if its crooked....just a thought
05-30-2007 | 02:31 PM
#22
Were doomed!
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From: Chicago, IL
05-30-2007 | 03:54 PM
#24
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Joined: Oct 2003
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From: Lake Stevens, Wa
There is a newer 500 efi in a local shop that blew the couplers a couple of times. Turned out that the coupler that bolts to the flywheel was machined way off center from Mercury. If that is the case, Mercury should warrantee it.
Last edited by Propster; 05-30-2007 at 04:30 PM.
05-30-2007 | 04:13 PM
#25
Ginger or Mary Ann?
Joined: Oct 2000
Posts: 11,030
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From: L
That's the thing most are overlooking here.
My guess is they were off to begin with (it happens, even with offshore mounts) and the mechanic either didn't check the alignment because of the thinkng they were offshore mounts= pretty reliable, or the owner does hammer it hard.
05-30-2007 | 08:02 PM
#26
Thread Starter
Rob
Joined: Aug 2001
Posts: 21,637
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From: Ms
No.I have only seen solid hubs on XR drives. The bronze hub with the teflon strips
he has 2 sets of merc lab props. It is not the props.........
US1 Fountain I am betting the same thing,to lazzy to ck
Wobble I figure the about .100 thou . ya never know they might of use a fork lift to push the on
Cuda I didnt look or ask it rubber was every were or smelt burnt.
Thanks again for the input.....
rob
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05-31-2007 | 07:14 AM
#27
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From: Denham Springs, La.
[QUOTE=Griff;2144574]I would also replace with the HD couplers used on the 575sci and up-#21 in the diagram.
That's what I'm thinking. Did the repair shop install the cheap generic crap you can get off the internet or genuine Merc HD couplers?
Transom or stringer failure could play in also but like was said before, the age of the boat should rule that out.
That's what I'm thinking. Did the repair shop install the cheap generic crap you can get off the internet or genuine Merc HD couplers?
Transom or stringer failure could play in also but like was said before, the age of the boat should rule that out.
05-31-2007 | 10:04 AM
#28
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From: 29°50'49.74"N 95° 5'17.55"W.......TEXAS
No.I have only seen solid hubs on XR drives. The bronze hub with the teflon strips
he has 2 sets of merc lab props. It is not the props.........
US1 Fountain I am betting the same thing,to lazzy to ck
Wobble I figure the about .100 thou . ya never know they might of use a fork lift to push the on
Cuda I didnt look or ask it rubber was every were or smelt burnt.
Thanks again for the input.....
rob
he has 2 sets of merc lab props. It is not the props.........
US1 Fountain I am betting the same thing,to lazzy to ck
Wobble I figure the about .100 thou . ya never know they might of use a fork lift to push the on
Cuda I didnt look or ask it rubber was every were or smelt burnt.
Thanks again for the input.....
rob
05-31-2007 | 11:29 AM
#29
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Joined: Oct 2003
Posts: 2,732
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sounds like he tried to power out of the brush.
05-31-2007 | 12:30 PM
#30
Thread Starter
Rob
Joined: Aug 2001
Posts: 21,637
Likes: 12
From: Ms
if he spun hubs and you said that he got caught in some brush then those props and drive system took some serious trauma, if the motor was turning to the point that the hubs spun look for the weakest link in the system from the coupler to the prop.
sounds like he tried to power out of the brush.
sounds like he tried to power out of the brush.
It ran the rest of the day and on the way home it blew out.This time he was going across lake mapeu,la and it let loose a again. He idled about 5 mile and it got back up on plane then went out again after about 5 min's
Wobble I will post whta they find
Croozin2 theres no telling what they put in it .Do they make a no name generic hub?
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
