---------------SECTION
B
EVERY 1200 HOURS
or
2 YEARS (whichever occurs first)
carry
out the following:
'9.
Coolant F'lltntlon System
1. Coolant filter
69/71. Coolant Inhibitor/Filtration System
1be
ever
increasing ouaput
of
modem, high speed
diesel
engines, particularly those used
in
heavy
duty agricultural applications,
ha.~
created the need
for
an
inhibitor
in
the
cooling system.
During_manufaclure,
the
engine cooling system is
filled
with a high quality antifrce7.e and water so-
lution
to
which
is
added
the inhibitor. This inhibi-
tor
increases and
extends
the
protection offered
by
the
existing inhibitor already present in the anti-
freeze.
The
added
inhibitor will:
• Increase rust prevention.
• Reduce scale fonnation.
• Minimise
cylinder
wall erosion (pitting).
• Reduce foaming
of
the coolant.
As
the
chemical inhibitor works and protects the
system
it
gradually loses
it's
strength and must,
,M612-"--""
70. Draining the Cooling System
1.
Radiator drain cock
therefore, be replenished
at
intervals with a meas-
ured dosage
to maintain the optimum protection
level.
The
chemical inhibitor
is
available in 16 fl.
07..
(473
ml)
bottles from Ford New Holland deal-
ers.
A
throw-away,
spin-<>n
coolant filter is available.
The
filter canister, Figure
69,
in addition to con-
taining the filter clement also contains inhibitor in
the form
of
a
pa.~te.
As coolant flows through the
filter, the
paste quickly dissolves and mixes with
the coolant
to
provide optimum protection be-
tween normal coolant change intervals.
IMPORT
ANT:
The
new
filter contains a
meas-
ure
of
chemical inhibitor
in
paste
form.
The
mea.~
ure
of
inhibitor and
the
.~ize
of
the filter element
are
matched to the
c()()ling
capacity
of
your
trac-
tor.
It
is
important that
this
filter
is
changed
every
1200
hours
or
two
years, whichever occurs first,
if
total protection
of
the
engine
C()()ling
system is to
be maintained.
The
use
of
a non-approved filter
may
jeopardize this protection.
27
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