M25 xpb belt wear
- Thread starter hvbaker
- Start date
#1 Check alignment & tension
#2 Check for pulley rust, should be no rust on any of the pulleys
#3 How big an alt?
#4 How big is the bank? Type? Flooded, GEL, AGM?
#5 Check alternator pulley width. Many times aftermarket alts have 1/2" pulleys and you ideally need a 3/8"
http://c34.org/bbs/index.php/topic,5078.msg55087.html#msg55087
Don't know if the alternator bracket is the same on the XPB as it is on the M25 and M25XP.
Don't know if the alternator bracket is the same on the XPB as it is on the M25 and M25XP.
about eight years ago when my boat was new to me but thirteen years old, the main belt broke so i always carry a spare one now. guess that any part that relies on friction to do its job will always be subject to wear, but i have no idea what premature might mean.
About 6 seasons ago I did Maine Sail Leece Neville 90amp alternator upgrade with smart reg. After that I had a hard time keeping the right tension. I used the ramp up mode on the regulator and still had a squealing belt after a few days on the hook. Lot of belt dust too. I ended up, out of frustration, doing a serpentine upgrade. I haven't re-tension the belt since. If you plan on keeping your boat and can afford it I'd recommend it. One of the best upgrades I've done to my boat.
As I posted here recently, I have the same problem. The alt pulley is about 1/8 inch tilted aft on the outside edge compared with a straight line off the circulating pulley.
Have not yet found a way to correct this. My engine area is looking like a coal dust bin.
Have not yet found a way to correct this. My engine area is looking like a coal dust bin.