Out running my Scarab today and heading back into port I have an enigne alarm sound....starboard engine getting hot...I killed it and noticed the serpetine belt loose! (500EFI Blue Merc Racing engines)
The belt was fine, which I thought was odd....so upon closer inspection I noticed the pulley on the water pump was about to come off! All four allen head screws (actually only 3 were left--one is MIA) were loose as a goose, causing the tension to become loose on the belt--leading to to come off completely.
So I need to get to a Hardware store tomorrow and get some Allen head bolts--does anyone know the correct size off hand? I have two in my hand with washers.
Anything I need to do special when I bolt the pulley back on and replace the belt?
Again thanks in advance-I learn a lot on this forum!
Thread: 500EFI Pulley question.....
Results 1 to 16 of 16
-
05-08-2010 10:57 PM
-
- Join Date
- Nov 2008
- Location
- Where the summer never ends
- Posts
- 4,346
-
05-08-2010 11:13 PM
We looked at the pulley real close and I do not think the crank is broke....at least I hope not---just seems like the bolts were lose, I did replace the water pumps recently...about 10 hours ago or so.
-
- Join Date
- Nov 2008
- Location
- Where the summer never ends
- Posts
- 4,346
-
05-08-2010 11:43 PM
-
05-09-2010 08:58 AM
ahhh locktite...
I know we didn't use locktite when I changed the Seapump.....is it possible they just "got" loose...or is this a deeper issue?
I have had a great season with ZERO issues.....off to the hardware store and see if I can't fix this..
Thanks again guys....KEEP it coming!
-
05-09-2010 09:18 AM
Blue locktite only
-
- Join Date
- Nov 2008
- Location
- Where the summer never ends
- Posts
- 4,346
-
- Join Date
- Dec 2009
- Posts
- 117
05-09-2010 11:14 AM
-
05-09-2010 05:54 PM
Ok--I replaced the missing bolt in the pulley--I think they worked loose becuase they were not tightened properly. I noticed the belt was loose so I replaced it and everything is BACK TO NORMAL!
Couple of runs out to the bay and back and she is 100% again....best part is I wrenched on it myself with a little guidance along the way.
Thanks again for all the help.....this was an easy fix.
-
05-09-2010 06:09 PM
Mercury used to safety wire them on HP engines.. Not sure why they stopped. They are not the easiest things to tighten. I have a strap type wrench to hold pulleys without damaging them.
I am happy to hear you got it going on short order.
-
- Join Date
- Nov 2008
- Location
- Where the summer never ends
- Posts
- 4,346
05-09-2010 06:26 PMglad you got her done...just keep an eye on it !!!!!
-
05-10-2010 08:01 AM
I think I will add this to my "preflight" duties, checking all the bolts and hoses on a regular basis.
Anyone have a part number handy to order some replacement belts? I might replace the other one as long as I have this fresh in mind.
the last one was in a bag titled "Quicksilver" and the part nmber is a little smudged.
-
05-10-2010 08:19 AM
There are a number of different serial # groups . Belt may be the same. Here is one from the middle of the list.
http://www.mercruiserparts.com/Show_...nd+Front+Cover
-
05-10-2010 11:26 AM
As long as I am asking....
Where can I find the Pulley Bolts (stainless Steal with washers) the have the allen head on them and bolt the pulley (4 of them) The bolt is 5/16 fine thread.
Is there a good place to order this other then Mercruiser?
I need to replace ONE of them since it is not stainless....
THANKS-IN-ADVANCE
Randy
-
- Join Date
- Nov 2008
- Location
- Where the summer never ends
- Posts
- 4,346