From the Factory Service Manual:
The water pump on 4.7L engines is bolted directly to
the engine timing chain case/cover.
A gasket is used as a seal between the water pump
and timing chain case/cover.
The water pump can be removed without discharging
the air conditioning system (if equipped).
1. Disconnect negative battery cable from battery.
2. Drain cooling system (Refer to 7 - COOLING -
STANDARD PROCEDURE). Do not waste reusable
coolant. If solution is clean, drain coolant into a
clean container for reuse.
WARNING: Constant tension hose clamps are
used on most cooling system hoses. When removing
or installing, use only tools designed for servicing
this type of clamp, such as tool 6094.
Always wear safety glasses when servicing constant
CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary,
use only an original equipment clamp with matching number or letter.
3. Remove accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL).
4. Remove lower radiator hose clamp and remove lower hose at water pump.
5. Remove seven water pump mounting bolts and one stud bolt.
CAUTION: Do not pry water pump at timing chain case/cover. The machined surfaces may be damaged
resulting in leaks
6. Remove water pump and gasket. Discard gasket.
1. Clean gasket mating surfaces.
2. Using a new gasket, position water pump and
install mounting bolts as shown.. Tighten water
pump mounting bolts to 58 N·m (43 ft. lbs.) torque.
3. Spin water pump to be sure that pump impeller
does not rub against timing chain case/cover.
4. Connect radiator lower hose to water pump.
5. Install accessory drive belt (Refer to 7 - COOLING/
ACCESSORY DRIVE/DRIVE BELTS - INSTALLATION).
CAUTION: When installing the serpentine accessory
drive belt, belt must be routed correctly. If
not, engine may overheat due to water pump rotating
in wrong direction.
6. Refill cooling system (Refer to 7 - COOLING -
7. Connect negative battery cable.
8. Start and warm the engine. Check for leaks.