BOMBARDIER 1980 Shop Manual page 108

SECTION 03
SUB-SECTION 02, (ENGINES)
COOLING SYSTEM
INSPECTION
Check general condition of hoses and clamp tightness.
DRAINING THE SYSTEM
•
WARNING: Never drain or refill the cooling system
when engine is hot.
To drain the cooling system, remove the coolant tank
cap and siphon the coolant mixture using a primer pump,
a length of plastic hose and steel tubing inserted as deep
as possible into the lower hose of the tank.
(~)
I(
Pnmer pump
DISASSEMBLY & ASSEMBLY
0@Apply pipe thread sealant to avoid leaks.
@)See if the cap pressurizes the system. If not. install
a new 13 Ibs cap, do not exceed 13 Ibs of pressure.
@To check thermostat. put it in water and heat water.
Thermostat should open when water temperature rea-
ches 43'C (110'F).
(464 ENGINE TYPE), PAGE 4
REFILLING THE SYSTEM
Blizzard 7500 & Super Sonic
Capacity:
Approximately 5 liters
(1.1 Imp. gal.) (1.3 U.S. gal.)
55% antifreeze
+
45% water
To refill the cooling system, unscrew plug on top of
cylinder head.
Removed
/,
plug ,
~~~\
I
© 0
P
'il>
(I
©
(I I:) (I
\~
Pour the liquid in the coolant tank until the coolant level
reaches 25 mm (1 ") below filler neck.
Reinstall tank cap and start engine; let engine run until
it
reaches its operating temperature and thermostat
opens. Allow it to run a few minutes more. Stop engine
and check coolant level; refill as necessary .
•
WARNING: Always unscrew cap to the first step
with
a
cloth to release pressure, before removing
it.