Coupler failure

Boatu44

Recruit
Joined
Aug 28, 2024
Messages
4
I was told when I damaged the prop (submerged stump) that this caused the coupler failure. Is this possible?
Merc 5 I/O
 

tank1949

Lieutenant Commander
Joined
Apr 4, 2013
Messages
1,892
Normally, prop hub will fail first. Take to prop shop for testing. If you need to test coupler, lock up motor from spinning using best way. Make sure OD is in gear. Then using 2 jam nuts installed on prop shaft, try turning motor. Long breaker bar or torque wrench should provide enough manual torque. You should know really quick.
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
70,953
I was told when I damaged the prop (submerged stump) that this caused the coupler failure. Is this possible?
Merc 5 I/O
Ayuh,..... Welcome Aboard,....... Not only possible, but quite likely,.....

Pull the drive, 'n then look over the splines through the gimbel bearing,....
You might also be able to see the rubber hub, by looking from behind the motor,....
 

Boatu44

Recruit
Joined
Aug 28, 2024
Messages
4
Thank you, the insurance company is trying to deny the claim and the mechanics report.
 

kenny nunez

Captain
Joined
Jun 20, 2017
Messages
3,290
I have had quite a few customers who had damage from submerged objects always was able to help the customer. Has the drive and prop been inspected by an adjuster? If the damage is less than your deductible then you are out of luck.
Just be sure to have the shop check for any additional damage that is not visible without a close inspection.
 

Boatu44

Recruit
Joined
Aug 28, 2024
Messages
4
Yes, he went to the shop. The shop told me to call insurance company. It’s much more than the deductible.
 
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