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L510010-07A
ENGINE MAINTENANCE - 11
Figure 11-18 Belt Tensioner (6.0L)
Figure 11-17 6.0L Accessory Drive Belt Confi guration
Belt
Tensioner
Circulation
Pump
Raw Water
Pump
Crankshaft
Pulley
Alternator
Idler
A
DRIVE BELT REPLACEMENT (6.0L)
6.0L SERPENTINE BELT #: R066027
1. Note the routing of the belt before removing.
2. Using a 15 mm box wrench or socket, turn the
belt tensioner to relieve the tension on the belt.
Slide the belt off of the pulleys. Release the
tensioner slowly to prevent the tensioner
from snapping against its stop, and possibly
causing damage to the tensioner.
3. Slide the new belt onto the pulleys using the
same routing as noted prior to removal.
4. Compress the belt tensioner, and slide the belt
over the tensioner pulley. Release the tension
slowly to tension the belt.
SERVICING RAW WATER PUMP IMPELLER
(6.0L)
6.0L IMPELLER KIT #: RP061022
The raw water pump impeller should be serviced every
50 hours, or once a year, whichever occurs fi rst. See
Maintenance Schedule.
Locations “A” (Figure 11-20) are access holes in order
to loosen the raw water pump attaching bolts. The bolts
are secured in the pump by O-rings, and will not fall out
during removal.
Torque the raw water pump housing attaching bolts
to 8.5-9 ft.lbs. (11.5-12 N-M), when re-installing the
impeller.
DRIVE BELT INSPECTION
Inspect the drive belt for excessive wear, shredding or
missing sections.
Inspect the drive belt for contamination from excessive
dirt, oil, coolant or other substances that may effect the
drive belt operation.
If a problem is found, replace the belt after inspecting the
following items:
• All pulleys and tensioners for signs of
misalignment
• All pulleys and tensioners for signs of rust or
other damage
• Bent pulleys or tight bearings in the engine water
circulation pump, sea-water pump and alternator
WARNING
Engine must be shut OFF and the ignition key
removed before inspecting the drive belt(s). The
drive belt(s) should be checked periodically for
condition and tension. If the belt(s) shows signs of
cracking, glazing or deterioration, replace with new
belt(s).
6.0L ACCESSORY DRIVE BELT
The PCM 6.0L engine uses a single serpentine belt to
drive the engine water circulation pump, sea-water pump
and the alternator.
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