INSPECTION
Check
for
gas
leakage
as
follows
I
Plug
high
and
low
pressure
joints
on
compressor
with
blind
caps
2
Connect
charging
hoses
in
lines
between
manifold
gauge
and
high
and
low
pressure
service
valves
Connect
refrigerant
can
to
middle
hose
of
manifold
gauge
3
Open
valve
of
can
tap
and
charge
refrigerant
Loosen
oil
filler
plug
at
side
of
compressor
to
purge
air
out
of
compressor
4
Turn
shaft
5
or
6
turns
Then
confirm
that
pressure
does
not
decrease
on
low
pressure
gauge
If
gauge
indicates
a
pressure
decrease
there
is
a
leak
Conduct
a
leak
test
Under
such
a
condition
remove
and
then
install
parts
again
CYLINDER
HEAD
AND
VALVES
Insufficient
refrigerant
compression
is
likely
to
be
caused
by
damaged
head
gasket
or
damaged
valves
Prior
to
servicing
the
head
and
valve
plate
both
service
valves
should
be
opened
to
free
any
gas
pressure
which
may
be
in
the
compressor
REMOVAL
I
Remove
the
bolts
from
flanged
type
service
valves
using
Torx
Driver
Bit
Note
The
direction
of
flanged
type
service
valves
should
be
noted
for
reinstallation
AC812
Fig
AC
66
Removing
service
valves
2
Remove
the
remaining
bolts
in
the
head
Air
Conditioning
AC813
Fig
A
C
6
7
Removing
cylinder
head
bolts
3
Remove
valve
plate
and
head
from
cylinder
by
prying
or
tapping
under
the
ears
which
extend
from
valve
plate
If
head
and
valve
plate
adhere
hold
head
and
tap
valve
plate
ears
away
from
head
with
a
soft
hammer
Note
Do
not
hit
or
tap
head
to
separate
head
and
valve
plate
be
3use
damage
to
head
may
result
Fig
AC
68
Removing
valve
plate
and
head
4
When
removing
the
gaskets
use
a
sharp
edged
knife
Notes
a
In
removing
head
gasket
be
very
careful
not
to
damage
machined
sealing
surface
b
Do
not
reuse
gaskets
AC815
Fig
A
C
69
Removing
gasket
AC37
INSTALLATION
Valves
and
valve
plates
are
furnish
ed
only
as
a
complete
assembly
I
Apply
a
thin
film
of
clean
refrig
eration
oil
on
area
of
crankcase
to
be
covered
by
cylinder
gasket
2
Place
cylinder
gasket
in
position
on
cylinder
so
dowel
pins
in
crankcase
go
through
dowel
pin
holes
in
cylinder
gasket
3
Apply
a
thin
film
of
clean
refrig
eration
oil
to
top
and
bottom
valve
plate
areas
to
be
covered
by
gaskets
AC816
Fig
A
C
70
Applying
clean
refrigeration
oil
4
Place
valve
plate
in
position
on
cylinder
gasket
so
discharge
valve
as
semblies
i
e
smaller
diameter
assem
blies
with
restrainer
over
valve
reed
are
facing
up
and
locating
dowel
pins
go
through
dowel
pin
holes
in
valve
plate
Fig
A
C
71
Placing
valve
plate
