i sat looking at the whole setup for like 20 minutes stressing out about taking the mount apart... the service manual didn't say anything about how to do this... but yeah, after watching this video I had the new belt on in like 10 minutes :) thank you so much for posting this :)
Very good video. It made the job easier knowing what to expect. I used a small bottle jack and a 3/4" thick piece of hardwood under the front main bearing area. I put just enough lift on it to take the weight off the engine mount. I had to pry the mount away from the engine to get the spacer out and to replace it. Mine is a 1992 Bayliner and it took a 40.5" belt. The whole job took 15 minutes.
Good work man, Made the job way easier. I used a small hydraulic jack and a piece of wood on the lip of the pan. After I put the spacer back in and bolted down the two bolts, I loosened the top engine mount nut and was able to remove the water pump pulley more easily.
Great video. I've got a 2001 motor and 15395 was the right belt number at any auto parts store. Don't forget to recheck tension after a day or three with the new belt to ensure it's still nice and taut.
The pulley and the mount where 1 mm apart impossible to squeeze the belt, but I followed your recommendation and success! I remove the spacer and jack up the engine loosening bolts from the other side of the mount bracket, I lifted just enough to squeeze the belt between the pulley and the mount. thanks ! I used NAPA 25-7395 v-belt, perfect fit
The Autozone Duralast 15400 (40") worked for the Alternator and from my measurements the 15370 (37") is right for the power steering. $9 each. My Alternator belt was really torn up and slipping big time. Will be curious how my temperatures run now. I was typically 200 degrees (the alternator belt also turns the water pump). Thanks for the video.
The marina told me I had to jack up the motor and remove the Engine mounting bolts.???Removing the spacer was excellent and quick. Great way to change the belt.
Thank you so much for this video! It helped a lot! I ended up needing a 41” V belt and worked like a dream! Only thing I need now is my adjustment bolt for my alternator is stripped. Was able to install with locking vice grips but definitely want to replace, any help on that would be appreciated!
make SURE that you install the spacer block correctly. you can install the block upside down and this will cause the belt to rub on the block and destroy it. the clearance between the block and the belt is very small. the belt will just clear the block when installed the right way.
The belt for this motor is a 15395...they been using the same belt since 1988...15400 probably works but thats not the belt that its supposed to be....just thought I would throw this info out...and the power steering belt is a 15370 to the person that asked
Do you happen to know the length of the drive belt mentioned 15395 and does this one go around the engine main.. water pump.. and alternator.. 3 pulleys total
This video was extremely helpful as I successfully replaced the belt with no issues! 🙌🏽. I have a new problem now, looks like I need to replace my alternator and looks like you have the same engine as mine. Do you happen to know what type of alternator I need by chance?
Break those 4 bolts loose on the pulley and the pulley comes right off, making it easier to get the belt in place. Most Mercruiser engines on boats manufactured after 2000 or so don't need to be scissor jacked, engine should be firmly in place even after that engine mount spacer is removed.
Semplice ed intuitivo. Avevo bisogno un suggerimento per sostituire la cinghia, in quanto avevo un dubbio se smontare i due bulloni come nel video; ora so come devo fare. Grazie. La mia cinghia è 57-69143Q.
Is it necessary for the spacer to be place back on after the belt is installed? I tried for 30 minutes to get the bolts back on to secure it and it wouldnt connect to the other end.
i sat looking at the whole setup for like 20 minutes stressing out about taking the mount apart... the service manual didn't say anything about how to do this... but yeah, after watching this video I had the new belt on in like 10 minutes :) thank you so much for posting this :)
Thank you you saved my memorial week boat life
Very good video. It made the job easier knowing what to expect. I used a small bottle jack and a 3/4" thick piece of hardwood under the front main bearing area. I put just enough lift on it to take the weight off the engine mount. I had to pry the mount away from the engine to get the spacer out and to replace it. Mine is a 1992 Bayliner and it took a 40.5" belt. The whole job took 15 minutes.
Just want to say thank you. Just replaced my belt on my 85 cobia 3.0 merc. Your video was clutch
Good work man,
Made the job way easier. I used a small hydraulic jack and a piece of wood on the lip of the pan. After I put the spacer back in and bolted down the two bolts, I loosened the top engine mount nut and was able to remove the water pump pulley more easily.
Great video. I've got a 2001 motor and 15395 was the right belt number at any auto parts store. Don't forget to recheck tension after a day or three with the new belt to ensure it's still nice and taut.
Excellent, 1985 motor and it's the same set up. Thank you for the video!
Great clip, it helped me decide which belt I needed. Next time I would maybe go with a 37 looks like it is almost maxed out on the alternator side.
The pulley and the mount where 1 mm apart impossible to squeeze the belt, but I followed your recommendation and success! I remove the spacer and jack up the engine loosening bolts from the other side of the mount bracket, I lifted just enough to squeeze the belt between the pulley and the mount. thanks ! I used NAPA 25-7395 v-belt, perfect fit
Thanks ! Used your belt model number and a scissor jack - 5 minutes later, got the new belt on !
great vid. I was wondering how that worked out. my mercruiser is a 1984 4cyl. set up just like yours. tons of help, this was. thanks a lot!
The Autozone Duralast 15400 (40") worked for the Alternator and from my measurements the 15370 (37") is right for the power steering. $9 each. My Alternator belt was really torn up and slipping big time. Will be curious how my temperatures run now. I was typically 200 degrees (the alternator belt also turns the water pump). Thanks for the video.
You sir ROCK!!!! I was having hell with this until this video. Thank you
Thanks for taking the time to post man, you saved the day!
The marina told me I had to jack up the motor and remove the Engine mounting bolts.???Removing the spacer was excellent and quick. Great way to change the belt.
Thank you so much for this video! It helped a lot! I ended up needing a 41” V belt and worked like a dream! Only thing I need now is my adjustment bolt for my alternator is stripped. Was able to install with locking vice grips but definitely want to replace, any help on that would be appreciated!
make SURE that you install the spacer block correctly. you can install the block upside down and this will cause the belt to rub on the block and destroy it. the clearance between the block and the belt is very small. the belt will just clear the block when installed the right way.
The belt for this motor is a 15395...they been using the same belt since 1988...15400 probably works but thats not the belt that its supposed to be....just thought I would throw this info out...and the power steering belt is a 15370 to the person that asked
Do you happen to know the length of the drive belt mentioned 15395 and does this one go around the engine main.. water pump.. and alternator.. 3 pulleys total
I'm thinking 39.5 since 400 is 40 inches
He is wrong 18-15400 is the factory installed v-belt for 74 and up 3.0l for the alt and water pump.
This video was extremely helpful as I successfully replaced the belt with no issues! 🙌🏽. I have a new problem now, looks like I need to replace my alternator and looks like you have the same engine as mine. Do you happen to know what type of alternator I need by chance?
I just googled 3.0L mercruiser alternator and I got several options. Any of them would work.
Thanks for the video,,, This helped a lot ...
good job man! Helpful thanks.
Break those 4 bolts loose on the pulley and the pulley comes right off, making it easier to get the belt in place. Most Mercruiser engines on boats manufactured after 2000 or so don't need to be scissor jacked, engine should be firmly in place even after that engine mount spacer is removed.
Thank youuuuu so muchhhh
Where do you put the jack, not under the sump?
Semplice ed intuitivo. Avevo bisogno un suggerimento per sostituire la cinghia, in quanto avevo un dubbio se smontare i due bulloni come nel video; ora so come devo fare. Grazie. La mia cinghia è 57-69143Q.
Is it necessary for the spacer to be place back on after the belt is installed? I tried for 30 minutes to get the bolts back on to secure it and it wouldnt connect to the other end.
2 years later: YES, it Absolutely is, or else the engine will misalign,and ruin your gimbal bearing,and other very expensive things.
Where did you put the scissor jack?
Thanks man!
do you know what size is the power steering belt?
Of this bent snaps and the engines running does it screw up the timing at all?
no effect on timing . Adjusting the timing is the moving the distributor
Hallo from Germany best eastern I like to know how much you need to pay for a use Motor like this and what place to buy THANKS
How tight should the belt be?
just tight enough that it runs smooth and doesn't flex
jack against the the oil pan?
You can, but I'd put something in between. Like block of wood or something.
:) thank you
I have a 87 mayliner Capri 20 ft. what size fan belts do I use and I need a neutral safety switch wit cobra engine
u never show how to put the belt inside
he says its hard to get the pully through the pully..then push the pully through and get it on the pully??????in America we call it a belt!
Thanks, it's very American of you. I hope you enjoy the rest of your day trolling RUclips looking for insults to provide fellow Americans.
I wasn't trolling.i was frustrated changing my belts ..it was right at that point where I couldn't understand what you were saying..sorry