Table of Contents
Advertisement
78
FIAT· 850 PASSENGER CARS
Fig. 131 - Checking rate of« Paraflu HI) fluid in cooling system.
1.
De'lice A. 95858 for checking
(I
Paraflu 11
»
rate.
miles - 60,000 km or two years use) by tap water
with addition of bichromate base rust inhibitors.
Recommended rust inhibitors:
potassium hi-chromate (2 to 3°/
00
by weight);
Ferroxan (Bayer);
Nalco 38 (Nalco Co.).
NOTE -
In this
event do not add sealing powder.
Prior to
filling with
inhibited water. flush the
cooling system thoroughly to remove
all
particle of
anti-freeze and sealing powder, inasmuch as the
bi-chromate
is
incompatible
with
any organic body.
To check the rate of {( Paraflu 11)} fluid
in
coolant
proceed as follows.
Checking Rate of
«
Paraflu 11
l>.
Should water have been added to the cooling
mixture
in
emergency, it will be necessary to
determine the rate of {( Paraflu 11}) in the circuit
in order to restore coolant characteristics.
Use device A. 95858 for this check, as follows.
Make sure that temperature of mixture ranges
between 50
0
and 158
0
F (10
0
and 70
0
C) and coolant
level
in
radiator is correct. Top up with tap water,
if necessary.
Suck up enough fluid into the device to raise
the Doat (fig. 131) and read on device tube the
letter corresponding to mixture level.
For example:
- the float
is
at letter F;
- observe the table on bottom of device and
read the actual rate of « Paratlu 11» present in the
circuit; this rate
is
the number (say .. 35 ,) on
column
F
lined up with the temperature reading
of device thermometer;
- from the chart
tI
amounts to be added' on
top of device
it
may be seen that for Model 850
number • 35, corresponds to
a
quantity of 1.70
liters of straight
«
Paraflu 11»; so the recommended
fluid rate of
50%
by volume can be restored.
NOTE - If plunger rises beyond letter
«
A». the
percentage of « Paraflu 11» in coolant will be
negligible or none.
WATER PUMP
Removal and Installation.
To remove the water pump from engine proceed
as follows:
remove engine right side apron;
remove radiator drain plug and let all coolant
out;
remove drive belt from pulley;
disconnect hoses at cylinder head and radiator;
remove lock ring securing air conveyor to
radiator;
- back out water pump mounting screws on
crankcase;
- withdraw water pump fan and air conveyor
assembly.
Install the water pump reversing above procedure
and
fill
up the cooling system as directed
in
previous
paragraph.
Disassembly and Assembly.
Clamp the assembly
in
a vise and separate the
conveyor. pulley and fan from the water pump.
Remover rear ball bearing snap ring (6, fig. 132).
Detach pump housing (2) from cover (14) by
removing mounting screws.
From impeller (13) slide off: ball bearing (7),
retainer (8), thrust washer (10), snap ring (11) and
seal (12).
Advertisement
Table of Contents
