Buick LeSabre 1965 Service Manual page 71

ENGINE
COOLING SYSTEM 2 - 4 9
WHEN AIR CONDITIONER
COMPRESSOR BELT IS
PROPERLY TENSIONED,
READING ON J—7316
GAGE WILL BE — 110
WHEN POWER STEERING
PUMP BELT IS PROPERLY
TENSIONED, READING
ON J—7316 GAGE WILL
BE — 90
Figure 2-50—Belt Tension Chart - Air Conditioned Jobs (401 and 425 Cu. In. Engine)
pump bearings. A loose belt will
slip and wear excessively and
will cause noise, engine over-
heating, and unsteady generator
output. A fan belt which is
cracked or frayed, or which is
worn so that it bottoms in the
pulleys should be replaced.
The fan belt may be replaced by
loosening the generator brace at
both ends, slightly loosening the
generator mounting b o l t s and
moving generator inward to pro-
vide maximum slack in the belt.
On a car equipped with power
steering, it is also necessary to
remove the oil pump drive belt
after loosening the pump mounting
bolts.
The Delcotron generator must be
moved sidewise to adjust the fan
belt. After the Delcotron genera-
tor brace and mounting bolts are
securely tightened, the fan belt
tension should be checked as
shown in Figure 2-49 and 2-50
for 401 and 425 engines; Figure
2-51 and 2-52 for 300 cu. in.
engine.
If the power steering oil pump
belt is removed it should be ad-
justed as shown in Figures 2-49
2-50, 2-51 and 2-52.
If the Air Conditioner compressor
belts are removed they should be
adjusted as shown in Figures 2-51
and 2-52.
2 - 2 2 RADIATOR
THERMOSTAT
INSPECTION
AND TEST
A sticking radiator thermostat
will prevent the cooling system
from functioning properly. If the
thermostat sticks in the open po-
sition, the engine will warm up
very slowly. If the thermostat