Table of Contents
Advertisement
192
OPERATION
NO- ID
39
1 -
3
: Overhauling
a suspension pump
TOOLS
17
18
19
IMPORTANT
NOTE
- If one
of
the
following
parts
has
been
replaced
:-
cover
(l),
seat
(6),
sleeve
(9)
or
pump
body,
the
thickness
of
the
shim
(5)
to
be
placed
between
the
cover
and
the
body
must
be
determined.
Proceed
in
the
following
manner
:-
To
determine
the
thickness
of
the
shim
(5)
:
a)
Insert
in
the
pump,
the
sleeve
(9),
the
seat
(6)
and
the
cover
(1)
(without
sealsi
Retain
the
parts
by
pushing
on
the
cover
by
hand.
b)
Using
feeler
gauges,
measure
the
clearance
between
the
cover
and
the
body.
This
should
be
measured
at
three
different
points;
calculate
the
average
of the
three
readings,
e. g. : 0. 20
mm.
cl
In
view
of
the
fact
that
the
clearance
should
be
between
0. 05
and
0.09
mm,
the
thickness
of the
shim
will
be:
0.20
- 0.09
= 0.11
mm.
Select
from
those
sold
by
our
Spare
Parts
Department,
the
shim
which
corresponds
to
the
thickness
deter-
mined
or
the
next
largest
thickness.
There must always be a clearance
(before
tightening)
between
the
cover
and
the
body.
d)
Remove
the
parts
from
the
pump
body.
Prepare
the
parts
:
a)
Place
the
spring
cap
(13)
and
then
the
circlip
(12),
on
the
stem
of
the
piston.
Clean
the
piston
and
the
sleeve
with
alcohol.
Dry
with
compressed
air
and
carefully
clean
the
piston
and
the
bore
of the
sleeve,
by
means
of
a soft
rag;
in
fact,
dirt
could
form
scratches,
causing
leakage
of
suspension
fluid
into
the
engine.
b)
Place
the
seal
(10)
in
position
(after
smearing
it with
suspension
fluid,
or
better
still,
with
castor
oil)
in
the
groove
in
the
sleeve
(cone
2227-T,
see
Pl.
89,
fig.
13)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTE
- Seals
(7)
and
(10)
are
almost
the
same
size.
To
identify
them,
place
one
over
the
other;
the
seal
with
the
smallest
external
diameter
is
the
seal
(10).
This
seal
is
also
more
hard
(krylene)
than
seal
(7).
c)
Smear
the
piston
and
the
sleeve
bore
with
suspension
fluid.
.Fit
the
spring
(11)
and
insert
the
piston
in
the
sleeve.
Ensure
that
it
slides
satisfactorily
and
that
the
circlip
(12)
is
in position
insidp
the
spring
cap
(13).
d)
Smear
the
seal
(7)
with
suspension
fluid,
and
fit
it
in the
groove
of the
seat
(6).
This
seal
must
be
tight
on
the
outer
diameter
of the
groove,
but
must
have
a certain
clearance
on
the
inside
diameter.
Assembling
the
pump
:
a)
Place
the
cover
(1)
on
two
vee
blocks
so that
it is
vertical.
Place
the
shim
(5)
determined
in
paragraph
9,
on
the
cover,
followed
by
the
seal
(4)
smeared
with
suspension
fluid,
the
spring
(2)
(see
fig.
1 for
positioning)
and
the
valve
(3).
b)
Compress
the
spring
(2)
by
pressing
down
on
valve
(3)
with
one
finger
until
the
valve
enters
the
bore
in
the
cover.
c)
Slide
the
seat
(6)
over
the
valve
until
it is
concentric
with
the
cover.
Place
the
sleeve-piston
assembly
on the
seat
and
centre
it.
ID
19
Cone
2227-T
- Quick Links:
- Electrical
- Starter Motor
Hide quick links:
Advertisement
Table of Contents
