Section 5 - Maintenance
90-899883295 JUNE 2008 Page 101
Serpentine Drive Belt
!
WARNING
Inspecting the belts with the engine running may cause serious injury or death. Turn off
the engine and remove the ignition key before adjusting tension or inspecting belts.
Belt Routing Diagram
a - Idler pulley
b - Water circulating pump pulley
c - Alternator pulley
d - Idler pulley
e - Power steering pump pulley
f - Idler pulley
g - Crankshaft pulley
h - Seawater pump pulley
i - Tensioner pulley
Checking
1. Inspect the drive belt for proper tension and for the following:
• Excessive wear
• Cracks
NOTE: Minor, transverse cracks (across the belt width) may be acceptable. Longitudinal
cracks (in the direction of belt length) that join transverse cracks are NOT acceptable.
• Fraying
• Glazed surfaces
• Proper tension ‑ 13 mm (1/2 in.) deflection, with moderate thumb pressure, on the
belt at the location that has the longest distance between two pulleys.
mc75130-1
Replacing
IMPORTANT: If a belt is to be reused, it should be installed in the same direction of rotation
as before.
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