Cooling Fan; Fan Drive Belt; Radiator Hose; Thermostat - Ford LRG-423 Service Manual

03-69 Auxiliary Systems
03-69
COOLING SYSTEM, REMOVAL AND INSTALLATION
Cooling Fan
Removal
Remove the screws and washer assemblies attaching
the fan and pulley to the water pump hub. Remove the
fan and pulley.
Installation
Position the fan and pulley on the water pump hub.
Loosen fan belt, if necessary. Install the lock washer
and screws and torque the capscrews to
specifications. Adjust the fan belt tension to
specifications.
Fan Drive Belt
Removal
Using a 3/8" breaker bar, pry against the tension of the
tensioner and remove the belt.
Installation
Using a 3/8" breaker bar, pry against the tension of the
tensioner and install the belt.
Radiator Hose
Removal
Radiator hoses should be replaced as directed in the
Maintenance Schedule or whenever they become
cracked, rotted or have a tendency to collapse.
Drain the radiator, then loosen the clamps at each end
of the hose to be removed. Slide the hose off the
radiator connection and the engine water outlet
connection (upper hose) or the water pump
connection (lower hose).
Installation
Position the clamps at least l/8 inch from each end of
the hose. Coat the connection areas with an approved
water-resistant sealer and slide the hose on the
connection. Make sure the clamps are beyond the
bead and placed in the center of the clamping surface
of the connections. Tighten the clamps. Fill the radiator
with the recommended permanent antifreeze and
water mixture. Operate the engine for several minutes,
then check the hoses and connections for leaks.
Thermostat
Removal
1.
Drain the radiator so that the coolant level is
below the thermostat.
2. Disconnect the heater return hose at the
thermostat housing located on the left front lower
side of engine.
3. Remove the coolant outlet housing retainer bolts.
Pull the elbow away from the cylinder head or
manifold sufficiently to provide access to the
thermostat. Remove the thermostat and gasket.
Installation
Check the thermostat before installing it, following the
procedure under Thermostat Test - Thermostat
Removed.
1. Clean the coolant outlet housing and cylinder
head or manifold gasket surfaces. Coat a new
gasket with water resistant sealer. Position the
gasket on the cylinder head opening. The gasket
must be positioned on the cylinder head before
the thermostat is installed.
To prevent incorrect installation of the thermostat,
the water outlet casting contains a locking recess
into which the thermostat is turned and locked.
Install the thermostat with the bridge section in
the outlet casting. Turn the thermostat clockwise
to lock it in position on the flats cast into the outlet
elbow.
2. Position the coolant outlet elbow against the
cylinder head. Install and torque the retaining
bolts to specifications.
3.
Connect heater return hose to thermostat
housing.
4. Fill the cooling system with the recommended
permanent antifreeze and water mixture. Check
for leaks and proper coolant level after the engine
has reached normal operating temperatures.
, OUTLET CONNECTION
- 8575
TO
PPD0056