Squealing fanbelt - 300TDi 110 Def

[Didge]

Hi all, I can't seem to stop any fanbelt I install from squealing - my mechanic reckons it could be dust and dirt but I reckon I've pretty well cleaned it with silicon spray to eliminate that source. I've tried the shiny and matt finish fan belts as suggested by more knowledgeable people but am lost as to how to stop it. Any suggestions would be gratefully appreciated.
cheers gerald

[wrinklearthur]

Hi Gerald

Drives me nuts when that canary sings.

My latest thoughts are that the pulleys are a minuscule out of alignment.
Holding a long steel ruler as a straight edge against the harmonic balancer, using a verier caliper measure from the edge of the straight edge to the first ridge of where the multivee belt run then go around each of the other pulleys in turn and repeat the measurement.
You may find that one of the pulley's needs a shim making, to get the pulleys mutlivee ridge's back in line.

Carefully clean out the gulley's of the multivee's with a thorough action, that will stop the belt climbing to one side as well.

The axis of the shaft for the alternator may not be parallel to the crankshaft axis, a bit of fiddling is needed to fix that error!
.

[Grappler]

Try putting a a small washer or 5 cent piece behind the belt tensioner

just back off the nut in the center and slip the washer in at the 9 oclock position (veiwed from the front) and clamp it up. Worked for me.

[rangieman]

Try putting a a small washer or 5 cent piece behind the belt tensioner

just back off the nut in the center and slip the washer in at the 9 oclock position (veiwed from the front) and clamp it up. Worked for me.

x2

[Jojo]

My latest thoughts are that the pulleys are a minuscule out of alignment.

.

I think you are on the right track. Or the water pump may be on its way out.
Cheers

[Bushie]

Tried all sorts of things to stop mine, spray with water would stop it for a while. Eventually replaced the tensioner - I'd forgotten how quiet it should be
The bush/plastic ? in the tensioner had a crack through it.

Martyn

[wrinklearthur]

Try putting a a small washer or 5 cent piece behind the belt tensioner

just back off the nut in the center and slip the washer in at the 9 oclock position (veiwed from the front) and clamp it up. Worked for me.

The belt tensioner can wear to the point that it is running the belt out of phase, off to one side and whilst the bearing can be replaced cheaply, the soft bushing in the pivot wears thin on one side, this is when you can do a temporary fix with a coin.
I replaced belt tensioner with new, in both of our on road vehicles and the canary came back!
.

[wrinklearthur]

I think you are on the right track. Or the water pump may be on its way out.

Replaced on both vehicles, the belt and the water pump !!! and the canary came back.

Can you imagine two Land Rovers idling side by side with their canary's singing a duet?
Maybe the canary's could be trained to whistle something like, look on the bright side of life?

[ame="http://www.youtube.com/watch?v=WlBiLNN1NhQ&context=C4f02289ADvjVQa1PpcFPI EJLfeapCOk7GPBod_v8yF4jiaGcO4IU="]Always Look On The Bright Side of Life - YouTube[/ame]

How I wish I could train those canary's to play dead!

http://api.ning.com/files/paFGdtjFya...DeadCanary.jpg

.

[Loubrey]

Allmakes 4x4 does an aftermarket replacement tensioner with a sealed bearing that will outlast the original by many years...

[harro]

Didge,
be careful when you do it (for obvious reasons).
Lube the inside of the belt with a bar of soap while the engine is idling.
Dry lube stick would be better but a bar of soap will do.
Works for me every time.

Cheers,
paul.