Oil Pan - Ford 1949-50-51 F-Series Truck Shop Manual

26 Chapter II-H-Series-6-Cylinder Engine
the manifold air baffle assembly on the right-hand side
of the cylinder head. Disconnect the ignition wires from
the spark plugs and remove the plugs. Remove the two
screws from the coil bracket and let the bracket hang
from the distributor. Disconnect the heater hose. Re-
move the cylinder head bolts, then remove the cylinder
head.
Before installing a cylinder head, clean the carbon
deposits from the combustion chambers and check to
see that all water passages are open. Gasket surfaces
must be free of old gasket material and projections at
bolt holes that may affect sealing.
Install a new cylinder head gasket (fig. 10) with the
cut off corner at the left front corner of the block.
NOTE: If the ga.ket b in.talled improperly, water
will leak externally at the left rear corner of the
engine between the cylinder head and block. Do not
enlarge any ga.ket hole,
or
overheating of the rear
cylinder. may re.ult.
Place the cylinder head in position on the block,
being careful not to damage the gasket. Before installing
the cylinder head bolts, coat the bolt threads with a
light coat of water resistant sealer. Insert the cylinder
head bolts and tighten them to 65-70 foot-pounds torque
in the sequence shown in fig. 11. Connect the heater
hose. Fasten the coil bracket and manifold air baffle
assembly to the cylinder' head. Install the spark plugs
and tighten them to 24-30 foot-pounds torque. Connect
the ignition wires to the spark plugs. Connect the tem-
perature sending unit wire. Connect the radiator hose.
Install the engine compartment cover. Fill the cooling
system according to the prevailing temperature. Operate
the engine for five minutes, stop the engine, and check
the coolant level in the radiator.
c. Parcel Delivery.
Drain the cooling system. Open the engine com part-
ment rear cover. Open the engine compartment frOllt
cover and fasten it open with the hook provided at the
left-hand corner near the hinge. Disconnect the upper
radiator hose at the cylinder head. Disconnect the tem-
perature sending unit wire. -Remove the screw from the
manifold air baffle assembly on the right-hand side of
the cylinder head. Disconnect the ignition wires from
the spark plugs and remove the plugs. Remove the two
screws from the coil bracket and let the bracket hang
from the distributor. Disconnect the beater hose. Re-.
move the cylinder head bolts, then remove the cylin-
der head.
Before installing a cylinder head, clean the carbon
deposits from the combustion chambers and check to
see that all water passages are open. Gasket surfaces
must be free of old gasket material and projections at
bolt holes that may affect sealing.
Install a new cylinder head gasket (fig. 10) with the
cut-off corner at the left front corner of the block.
NOTE: If the gasket i. in.talled improperly, water
will leak externally at the left rear corner of the
engine between the cylinder head and block. Do not
enlarge any ga.ket hole,
or
overheating of the rear
cylinders may re.ult.
Place the cylinder head in position on the block,
being careful not to damage the gasket. Before installing
the cylinder head bolts, coat the bolt threads with a
light coat of water resistant sealer. Insert the cylinder
head bolts and tighten them to 65-70 foot-pounds torque
in the sequence shown in fig. 11. Connect the heater
hose. Fasten the coil bracket and manifold air baffle
assembly to the cylinder head. Install the spark plugs
and tighten them to 24-30 foot-pounds torque. Connect
the ignition wires to the spark plugs. Connect the radi-
ator hose. Close the engine compartment covers. Fill
the cooling system according to the prevailing tempera-
ture. Operate the engine for five minutes, stop the
engine, and check the coolant level in the radiator.
3. OIL PAN., OIL PUMP, AND PRESSURE RELIEF VALVE
Procedures in this section cover removal, cleaning,
inspection, installation of the oil pan, reconditioning the
oil pump, and replacement of oil seals and oil pressure
relief valve.
a. Oil Pan.
An oil pan cleanout plate is provided on the bottom
of the oil pan. The oil pump screen assembly can be
cleaned when the cleanout plate is removed. Figure 12
illustrates the pan, cleanout plate, gaskets, oil seals, and
screen assembly.
( 1 ) REMOVAL. Raise the front end of the truck and
set it on safety jacks. Drain the crankcase. Remove the
splash pan. Disconnect the starter cable and remove the
starter. Disconnect the ventilation pipe bracket. Re-
move the screws that hold the oil pan to the engine
rear plate. Remove the screws that hold the oil pan to
the engine block and the front cover plate. Remove the
oil pan from the engine.
(2) CLEANING. Use a solvent to remove the sludge
and dirt from both the inside and outside of the oil pan.
Scrape the old gasket ftange. Clean the oil pump inlet
screen.
(3) INSPECTION. Inspect the oil pan for any ex-
ternal damage such as cracks or warped gasket surfaces.
Inspect the drain plug threads for damage that may
cause leakage. Check the oil pump screen and inlet tube