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Begin OCR Text:
_ _ v_o_vop
where it is conveyed into the engine through the
distributing pipe.
An air cushion forms in the upper part of the eK =
p3nsion tank and permits the coolant to eKpand
without invoIving any loss of coolant so that there
is air suction af reduced temperature and volume .
This arrangement ensures that the cooIing system
is always filled with coolant. thus minimizing the
risk of corrosion When the cooling system is be. =
ing topped up it will probably be difficult to prevent_
air from entering this system The air however is. , ,
subsequently separated and forced out into the ex -
pansion tank where it is reptaced by coolant from
this tank It is therefore important to check the. , ,
coolant leveI after the system has been emptied
and filled with new coolant .
The eKpansian tank cap is provided with a vaIve
which opens when the pressure in the system goes
up to O 7 atmospheric gauge There is also a valve. .
which opens when there is a partial vacuum in the
system and admits air into the eKpansion tank .
Fig. 2-lO2. CoDIant _low. thermostat open N3O
Concerning numbers above. see preu1ous figure
R E PA l R l N __ R U __l O N _
RADJATO_ opening on top of the radiator the heafer control,
Topp_NG up w_TH CooiANT should be set at maK heat FiII the radiator to the. .
top and fit the cap fill afso the eKpansion tank toTopp_ng up _EURh c _ant c ng_ t_ g f _o ox EURh _
i wi oo . o iS in o _ e y- h ,. M .. k 3o i_ _i j b h.
_ i _ d _o ox EUR ( __ dj . t e aK maf or to max. mm _ a ove t iS
ene g yCo an o wa er a year foun iS mark Run the engine for several minutes at diffe. -
done in the eKpansion tank when the leveI has fal_
' rent speeds If necessary top up with more coo,. . , -
_en tO the _ Mln mark. Iant and then fit the expansion tank cap After driv. -
N.B. Never top up with water onIy. ing for a short time check the coolant level and,
top up with more coolant since it takes some time
DRAlNl N G THE COOLING SYSTEM before the system is completely devoid of air .
To drain the cooling system, open a cock on the en-
gine and remove the lower radiator hose The eK- Cooi_NG SySTEM iEAKAG E
_
pansion tank is emptied by first taking it off its CHECK
mounting and holding it at a sufficient height so that The cooling system is checked for teakage as fol =
the cooIant runs into the radiator. Another way to lows_ Remove fhe radiator cap and make sure thatEUR th t k _ b _ _t .d d _
emp y e an is y turning i upsi e own. the fill_ng hole and sealing surface are cIean Con. _
nect a cooling system pressure tester to the fiIlingF_ii_ NG EMpiy SySiEM w_iH h _
CooiANi O e.
M k a c ecEUR_ fo EURh tegt b d ____n hoiea e onn ion r e er y ri i g a
Before filling flush the cooling system with clean in a radiator cap soldering a pipe to the cap and, ,
water When fil1ing with coolant through the fiIIer connecting a hoze between the tester and cap_ _ _
2 . 51 '
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