Belt Adjustment - Chevrolet Corvette 1953 Operation Manual

BELT ADJUSTMENT
ImEIl:MOSTAT
I. Loosen bolt at genera-
lor
slotted bracket.
2. Pull generator away
from engine until de·
sired bell tension is ob.-
tained. \Vith correct
adjustment a light pres-
sure on the bell at a
point midway between
pulleys should cause a
7/16'
to
~'
deflection
(fig.
71).
3. Tighten all generator
bolts secuTely.
thermostat consists of a restriction valve actuated
by
a
tbenn,,.,,,ti'c clement. This unit is mounted in the housing
the cylinder head water outlet above the water pump.
are designed
to
open and close at predetcr.
temperatures and if not operating properly may
abnormally high or abnormally low engine tempera-
If the condition of the thennostat is questioned, it
be removed and tested as follows:
Open radiator drain cock apd drain out about half the
coolant to bring the coolant level below the thermostat,
then close the drain cock.
2. Remove the two cap screws
that
attach the water oul.
let
to
the thermostat housing (fig.
72)
and lift water out-
let (with hose attached), gasket, and thermootat from
housing.
3. Heat a container of water to a temperature 25°
abov~
the temperature stamped on the thermostat and place
thermostat in the water and sec if it opens fully. If it
does not fully open, it should be replaced.
4. Place thermostat in
water 10
0
below tbe
temperature stamped
on the thermostat and
see if thermootat fully
closes. If it does not
fully close, it should be
replaced.
5. Place thermostat in
bowing, then using a
new gaske t, install
water outlet
and
cap
screws. Tighten SCrews
Fig . 72- Thdmrulal Housm,
evenJy and securely.
6. Fill cooling system and check it for lcab.
49