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Old 05-21-2010, 12:31 AM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 21,542
Mein Auto: 02 BMW 525i M54 auto 130K
OK on the stethoscope.

I'm still confused which pulleys, rollers, and tensioners are in the M54 engine!

And I don't know how to tell if I have spring-loaded or hydraulic belt tensioners.

Is this guess correct yet?

A = alternator belt tensioner pulley
B = alternator belt idler pulley
C = idler roller?
D = power steering pump pulley
E = crankshaft pulley (aft)
F = AC compressor pulley
G = crankshaft pulley (fore)
H = AC belt tensioner
I = alternator pulley
Do I have spring-loaded or hydraulic belt tensioners?
(anything missing)

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