4.3 Mercruiser Serpentine Belt

M

MRA

Recruit
Joined
Jul 6, 2008
Messages
2
Hello,
I have a 1999 Mercrusier 4.3L and had the serpintine belt shred on one edge and come off this weekend. I replaced the belt with a new one and after running for about 2 hours the new one did the same thing. The belt is not breaking but seems to ride up off of the power steering pump pulley. If I remove the belt I can move the power steering pump shaft in and out by about an 1/8 of an inch. Would this be enough to cause the belt problems? Would the power steering pump need to be replaced? Thanks.
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 4.3 Mercruiser Serpentine Belt

First of all, look for rust on any of the pulleys, that will eat up a belt very quickly.
Also check idler pulleys. The bearing go out on them and allow them to tilt which will walk the belts out of the grooves.
 
M

MRA

Recruit
Joined
Jul 6, 2008
Messages
2
Re: 4.3 Mercruiser Serpentine Belt

Thanks. There is some rust on the pulleys, I will clean this up. The idler pulley dosen't look tilted but there is some play in the bearing. I am going to try to replace this and see what happens.
 
You must log in or register to reply here.
Top