5.7L Engines (Closed Cooling System); Liter Engines (Raw Water Cooled) - Volvo 5.0OSiE-J Operator's Manual

VPA 7748131 English 09-2007
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5.0–5.7L Engines (Closed Cooling System)
1. Loosen and remove long bolt 1 and short bolt 2;
save for reuse.
2. Remove upper thermostat housing 3.
3. Remove gasket 4, O-ring 5, and thermostat 6
from lower thermostat housing 7. Discard gasket
and thermostat. Inspect O-ring and, if damaged,
replace.
4. Clean thermostat housing surfaces where the
gasket makes contact. Remove any remnants of
the old gasket.
NOTICE! Take care not to drop any debris into the
thermostat housings. Place rags in the
housings to keep debris out; remove when
cleaning is completed.
5. Place new gasket, new thermostat, and the O-
ring into the groove in the lower thermostat hous-
ing.
6. Replace upper thermostat housing.
7. Install bolts and torque to18–30 ft. lb.
(25–41 Nm).

8.1 Liter Engines (Raw Water Cooled)

1. Loosen and remove long bolt 1, washer 2, and
short bolt 3; save for reuse.
2. Remove thermostat housing 4.
3. Remove thermostat 5, small O-ring 6, and large
O-ring 7, from cross-over pipe housing 8. Discard
thermostat. Inspect O-rings and, if damaged,
replace.
4. Place new thermostat and O-rings into the groove
in the cross-over pipe housing.
5. Replace upper thermostat housing.
6. Install bolts and washer and torque to18–30 ft. lb.
(25–41 Nm).
Maintenance
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