Repair
Diaphragm
Diaphragm
Diaphragm Repair
Repair
Repair
Disassemble
Disassemble
Disassemble the
the
the Diaphragms
Diaphragms
Diaphragms
NOTE:
NOTE:
NOTE: Diaphragm
Diaphragm
Diaphragm kits
kits
kits are
are
are available
available
available in
in
in a
a
a range
range
range of
of
of
materials
materials
materials and
and
and styles.
styles.
styles. See
See
See Parts
Parts
Parts section.
section.
section.
1.
1.
1.
Follow
Follow
Follow the
the
the
Pressure
Pressure
Pressure Relief
Relief
Relief Procedure,
Procedure,
Procedure, page
page
page 12
12
12
...
Remove
Remove
Remove power
power
power from
from
from the
the
the motor.
motor.
motor. Disconnect
Disconnect
Disconnect all
all
all
hoses.
hoses.
hoses.
2.
2.
2.
Remove
Remove
Remove the
the
the manifolds
manifolds
manifolds and
and
and disassemble
disassemble
disassemble
the
the
the ball
ball
ball check
check
check valves
valves
valves as
as
as explained
explained
explained in
in
in
Check
Check
Check Valve
Valve
Valve Repair
Repair
Repair,,, page
page
page 12
12
12
...
3.
3.
3.
Remove
Remove
Remove the
the
the clamps
clamps
clamps (5)
(5)
(5) from
from
from the
the
the fluid
fluid
fluid covers,
covers,
covers,
then
then
then pull
pull
pull the
the
the fluid
fluid
fluid covers
covers
covers off
off
off of
of
of the
the
the pump.
pump.
pump.
4.
4.
4.
Loosen
Loosen
Loosen the
the
the screws
screws
screws and
and
and remove
remove
remove the
the
the motor
motor
motor fan
fan
fan
cover.
cover.
cover. Turn
Turn
Turn the
the
the motor
motor
motor fan
fan
fan by
by
by hand
hand
hand to
to
to move
move
move the
the
the
piston
piston
piston fully
fully
fully to
to
to one
one
one side.
side.
side.
NOTE:
NOTE:
NOTE: If
If
If the
the
the pump
pump
pump is
is
is still
still
still attached
attached
attached to
to
to the
the
the motor,
motor,
motor,
remove
remove
remove the
the
the plug
plug
plug (124)
(124)
(124) and
and
and o-ring
o-ring
o-ring (134).
(134).
(134). Use
Use
Use a
a
a
10
10
10 mm
mm
mm socket
socket
socket to
to
to rotate
rotate
rotate the
the
the shaft
shaft
shaft clockwise
clockwise
clockwise to
to
to
shift
shift
shift the
the
the piston
piston
piston to
to
to one
one
one side.
side.
side. Socket
Socket
Socket should
should
should move
move
move
easily
easily
easily [no
[no
[no more
more
more than
than
than 15
15
15 in-lb
in-lb
in-lb (1.7
(1.7
(1.7 N•m)
N•m)
N•m) of
of
of torque].
torque].
torque].
If
If
If more
more
more torque
torque
torque is
is
is required,
required,
required, stop.
stop.
stop. Remove
Remove
Remove the
the
the
motor.
motor.
motor. See
See
See
Center
Center
Center Section
Section
Section Repair
Repair
Repair,,, page
page
page 17
17
17
5.
5.
5.
Overmolded
Overmolded
Overmolded Diaphragms
Diaphragms
Diaphragms (((
PO
PO
PO
models)
models)
models)
a.
a.
a.
Hold
Hold
Hold a
a
a 5/8
5/8
5/8 in.
in.
in. wrench
wrench
wrench on
on
on the
the
the wrench
wrench
wrench flats
flats
flats of
of
of
the
the
the exposed
exposed
exposed piston
piston
piston shaft.
shaft.
shaft. The
The
The diaphragm
diaphragm
diaphragm
(12)
(12)
(12) will
will
will screw
screw
screw off
off
off by
by
by hand.
hand.
hand. Remove
Remove
Remove the
the
the air
air
air
side
side
side diaphragm
diaphragm
diaphragm plate
plate
plate (11).
(11).
(11).
b.
b.
b.
Move
Move
Move the
the
the piston
piston
piston fully
fully
fully to
to
to one
one
one side
side
side by
by
by rotating
rotating
rotating
the
the
the drive
drive
drive shaft.
shaft.
shaft. On
On
On AC
AC
AC Models,
Models,
Models, move
move
move the
the
the
piston
piston
piston by
by
by hand
hand
hand turning
turning
turning the
the
the motor
motor
motor fan.
fan.
fan. (See
(See
(See
instructions
instructions
instructions in
in
in step
step
step 4).
4).
4). Repeat
Repeat
Repeat step
step
step 5a.
5a.
5a.
6.
6.
6.
All
All
All Other
Other
Other Diaphragms
Diaphragms
Diaphragms
a.
a.
a.
Hold
Hold
Hold a
a
a 5/8
5/8
5/8 in.
in.
in. wrench
wrench
wrench on
on
on the
the
the wrench
wrench
wrench flats
flats
flats
of
of
of the
the
the exposed
exposed
exposed piston
piston
piston shaft.
shaft.
shaft. Use
Use
Use a
a
a 15
15
15 mm
mm
mm
wrench
wrench
wrench on
on
on the
the
the shaft
shaft
shaft bolt
bolt
bolt (15)
(15)
(15) to
to
to remove
remove
remove it.
it.
it.
Then
Then
Then remove
remove
remove all
all
all parts
parts
parts of
of
of the
the
the diaphragm
diaphragm
diaphragm
assembly.
assembly.
assembly.
b.
b.
b.
Move
Move
Move the
the
the piston
piston
piston fully
fully
fully to
to
to one
one
one side
side
side by
by
by rotating
rotating
rotating
the
the
the drive
drive
drive shaft.
shaft.
shaft. On
On
On AC
AC
AC Models,
Models,
Models, move
move
move the
the
the
piston
piston
piston by
by
by hand
hand
hand turning
turning
turning the
the
the motor
motor
motor fan.
fan.
fan. (See
(See
(See
instructions
instructions
instructions in
in
in step
step
step 4).
4).
4). Repeat
Repeat
Repeat step
step
step 6a.
6a.
6a.
7.
7.
7.
To
To
To continue
continue
continue with
with
with center
center
center section
section
section disassembly,
disassembly,
disassembly, see
see
see
Disassemble
Disassemble
Disassemble the
the
the Center
Center
Center Section
Section
Section,,, page
page
page 17
17
17
...
14
3A3168R
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