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2-46
OIL PUMP
ENGINE
(68)
Figure 2-43-Water Pump Seal
Disassembled-Second
Type
DRIVING
DENTS
4. Install pump assembly on engine using
new gasket, and a new pump body to thermo-
stat housing hose if
necessary.
5. Connect all hoses, fill cooling system and
check for water leaks at connections.
6.
Install fan belt and ad
just
to proper
ten-
sion
(par.
2-27)
.
Figure 2
-42-Removing
Pump Impeller
7. Thoroughly clean
the
pump body to re-
move rust, old gasket,
etc.
Do not soak in clean-
ing
solvent
as this may leak into bearing and
destroy
the lubricant.
b. Installation of Seal Assembly and
Installation of Water Pump
1. If the old brass seal sleeve was removed
f
rom
pump body during
disassembly,
carefully
press the slee
ve
of new seal assembly into place,
using a thick
walled
tube of proper inside and
outside diameters to bear fully against flange
of sleeve.
It
is not necessary to remove the
other seal parts from
sleeve.
la. If
old sleeve was not removed, separate
the
new
seal sleeve from seal bellows by
soak-
ing in hot water to soften the cement used to
hold seal parts together for ease of
handling.
Install the
bellows,
spring, and carbon washer
in the sleeve in pump
body,
with the low-
shouldered side of washer outward. Be care-
ful to engage the two notches in washer with
the driving dents in brass
sleeve.
See figure
2-43.
2. Coat
the
face of ca r bon
washer
an
d im-
peller hub with
r
ust
preventative or Seco Oil,
then support pump
assembly
on the fan end of
shaft and press the imp
eller
on inner end of
shaft until rear face of impeller is flush with
end of shaft.
3. Install pump
cover,
using a new gasket
cemented in place. Install fan pulley and blade
and tighten attaching screws securely.
2-30 OIL PUMP REPAIRS
When an oil pump is removed for repairs the
following procedure must be used to inspect
parts and assemble pump in order to
insure
adequate oil pressure when the work is com-
pleted.
1. Remove screen and float
assembly
from
pump cover by removing r
etaining
cotter
pin
.
Wash the screen
thoroughly
in kerosene or
other solvent and apply light air pressure
through the inlet tube to dislodge dirt from the
outer surface of screen.
2. Check oil pressure val
ve
to see if it is free
in pump
body.
Also
,
check hole in bod
y
to see
that it is not oversize and that the valve fits
Figure
2-44-Position
of Gear on Shaft
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