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Section VIII
COOLING SYSTEM
l.
ADJUSTMENT OF FAN BELT.
1936-42-Loosen the generator mount-
ing bracket pivot bolts and the adjusting
strap lock screw. Pu11 out on the generator
until the belt is just snug. Hold the gener-
ator in this position and tighten the adjust-
ing strap iock screw and bracket pivot bolts.
CAUTION
Never adjust the fan belt by mov-
ing the generator with a pry bar
and do not over-tighten the belt.
2. REPLACEMENT OF FAN BELT.
1936-42-Loosen the generator mount-
ing bracket pivot bolts and the adjusting
strap lock screw. Push the generator toward
the engine and remove the belt from both
pulleys. After installing belt, adjust it to the
proper tension.
3. REPLACEMENT OF ENGINE
WATER THERMOSTAT.
1936-42-Remove the by-pass elbow
and cylinder head water outlet elbow and
remove the thermostat. The thermostat has
no adjustment and if it fails to operate, it
should be replaced. When installing the unit,
be sure to install the cylinder water outlet
elbow gasket and on the 1940-42 models
the thermostat gasket. Also on the 1940-42
models the thermostat has four by-pass
ports and the alignment of the thin bridge
that divides the ports should be from front to
rear of the car (fig. 1 ) . This will place two
ports toward the radiator and the other two
toward the rear, leaving the two wide faces
toward right and left.
4. REPLACEMENT OF WATER
DISTRIBUTOR TUBE.
1936-42-The water distributor tube is
located between the cylinders and the valve
ports near the top of the cylinder block.
It
directs the flow of water from the water
pump against the valve ports, which are the
hottest spots in the engine. To remove tube,
remove radiator and water pump, then use
a stiff, hooked rod to pull the tube out of the
cylinder block.
NOTE
It is recommended that the water
distributor tube be replaced when-
ever the engine is completely
overhauled.
If
the tube becomes
rusted or corroded, overheating of
the engine will occur due to fail-
ure of the water to circulate prop-
erly through
1~he
cylinder block.
5. REPLACEMENT OF WATER PUMP.
1941-42-Remove the fan belt and dis-
connect the water pump hose. Unfasten the
water pump from the engine and lift out-the
1-Cylinder water outlet
elbow, water pump
by·pass elbow and
hose
4---Water pump by-pass
elbow gasket
5-Thermostat
2-Thermostat gasket
6-Cylinder water outlet
3-Thermostat openings
elbow, gasket
Figure
!-Removing
Thermostat (1940-42 Models,
Typical
of
1936-39 Models)
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