Repair
Center
Center
Center Section
Section
Section Repair
Repair
Repair
Disassemble
Disassemble
Disassemble the
the
the Center
Center
Center Section
Section
Section
See
See
See the
the
the illustrations
illustrations
illustrations on
on
on the
the
the following
following
following page.
page.
page.
1.
1.
1.
Follow
Follow
Follow the
the
the
Pressure
Pressure
Pressure Relief
Relief
Relief Procedure,
Procedure,
Procedure, page
page
page 12
12
12
...
Disconnect
Disconnect
Disconnect all
all
all fluid
fluid
fluid and
and
and air
air
air lines.
lines.
lines.
2.
2.
2.
Remove
Remove
Remove the
the
the manifolds
manifolds
manifolds and
and
and
check
check
check valve
valve
valve parts
parts
parts as
as
as directed
directed
directed in
in
in
Disassemble
Disassemble
Disassemble the
the
the Check
Check
Check Valves,
Valves,
Valves, page
page
page 12
12
12
...
3.
3.
3.
Remove
Remove
Remove the
the
the fluid
fluid
fluid covers
covers
covers and
and
and
diaphragms
diaphragms
diaphragms as
as
as directed
directed
directed in
in
in
Disassemble
Disassemble
Disassemble the
the
the Diaphragms
Diaphragms
Diaphragms,,, page
page
page 14
14
14
...
TIP:
TIP:
TIP: Clamp
Clamp
Clamp the
the
the gear
gear
gear box
box
box bracket
bracket
bracket (27)
(27)
(27) to
to
to the
the
the
bench.
bench.
bench. Leave
Leave
Leave the
the
the pump
pump
pump connected
connected
connected to
to
to the
the
the motor.
motor.
motor.
4.
4.
4.
Use
Use
Use a
a
a 5
5
5 mm
mm
mm hex
hex
hex wrench
wrench
wrench to
to
to remove
remove
remove 4
4
4 bolts
bolts
bolts (117).
(117).
(117).
Pull
Pull
Pull the
the
the pump
pump
pump off
off
off of
of
of the
the
the alignment
alignment
alignment housing
housing
housing (116).
(116).
(116).
TIP:
TIP:
TIP: It
It
It may
may
may be
be
be necessary
necessary
necessary to
to
to tap
tap
tap the
the
the pump
pump
pump with
with
with a
a
a
rubber
rubber
rubber mallet
mallet
mallet to
to
to disengage
disengage
disengage the
the
the coupler.
coupler.
coupler.
5.
5.
5.
Use
Use
Use a
a
a 5/16
5/16
5/16 hex
hex
hex wrench
wrench
wrench to
to
to remove
remove
remove the
the
the plug
plug
plug
(124).
(124).
(124). Use
Use
Use a
a
a 30
30
30 mm
mm
mm socket
socket
socket wrench
wrench
wrench to
to
to remove
remove
remove
the
the
the bearing
bearing
bearing bolt
bolt
bolt (106)
(106)
(106) and
and
and the
the
the o-ring
o-ring
o-ring (108)
(108)
(108) from
from
from
the
the
the top.
top.
top.
6.
6.
6.
Turn
Turn
Turn the
the
the shaft
shaft
shaft so
so
so the
the
the groove
groove
groove (G)
(G)
(G) on
on
on the
the
the drive
drive
drive
shaft
shaft
shaft (112)
(112)
(112) is
is
is at
at
at the
the
the top,
top,
top, in
in
in line
line
line with
with
with the
the
the alignment
alignment
alignment
mark
mark
mark (A)
(A)
(A) on
on
on the
the
the center
center
center housing.
housing.
housing.
7.
7.
7.
Use
Use
Use a
a
a 3/4–16
3/4–16
3/4–16 bolt,
bolt,
bolt, screwed
screwed
screwed into
into
into the
the
the hole
hole
hole for
for
for plug
plug
plug
(124),
(124),
(124), to
to
to push
push
push out
out
out the
the
the drive
drive
drive shaft
shaft
shaft (112).
(112).
(112). You
You
You can
can
can
also
also
also use
use
use the
the
the bearing
bearing
bearing bolt
bolt
bolt (106),
(106),
(106), but
but
but remove
remove
remove the
the
the
bearing
bearing
bearing (107)
(107)
(107) first.
first.
first. Be
Be
Be sure
sure
sure that
that
that the
the
the groove
groove
groove on
on
on
the
the
the drive
drive
drive shaft
shaft
shaft remains
remains
remains aligned
aligned
aligned with
with
with the
the
the markings
markings
markings
in
in
in the
the
the center
center
center section.
section.
section.
NOTICE
NOTICE
NOTICE
Proper
Proper
Proper alignment
alignment
alignment is
is
is essential.
essential.
essential. Do
Do
Do not
not
not
apply
apply
apply more
more
more than
than
than about
about
about 10
10
10 in
in
in---lb
lb
lb (1.1
(1.1
(1.1 N•m)
N•m)
N•m)
of
of
of torque.
torque.
torque. Excessive
Excessive
Excessive torque
torque
torque could
could
could strip
strip
strip the
the
the
housing
housing
housing thread.
thread.
thread. If
If
If you
you
you encounter
encounter
encounter resistance,
resistance,
resistance,
check
check
check drive
drive
drive shaft
shaft
shaft alignment
alignment
alignment or
or
or contact
contact
contact your
your
your
distributor.
distributor.
distributor.
8.
8.
8.
Remove
Remove
Remove the
the
the seal
seal
seal cartridge
cartridge
cartridge (110),
(110),
(110), the
the
the o-ring
o-ring
o-ring (109)
(109)
(109)
and
and
and the
the
the radial
radial
radial seal
seal
seal (111)
(111)
(111) with
with
with o-ring
o-ring
o-ring (111a).
(111a).
(111a).
9.
9.
9.
Slide
Slide
Slide the
the
the piston
piston
piston assembly
assembly
assembly (102)
(102)
(102) out
out
out of
of
of the
the
the center.
center.
center.
10.
10.
10. Leave
Leave
Leave the
the
the gearbox
gearbox
gearbox coupler
coupler
coupler (114)
(114)
(114) attached
attached
attached to
to
to the
the
the
gearbox
gearbox
gearbox (118)
(118)
(118) shaft
shaft
shaft unless
unless
unless itit
it is
is
is damaged.
damaged.
damaged. If
If
If you
you
you
need
need
need to
to
to remove
remove
remove it,
it,
it, first
first
first remove
remove
remove the
the
the alignment
alignment
alignment
housing
housing
housing (116).
(116).
(116). Use
Use
Use an
an
an 8
8
8 mm
mm
mm hex
hex
hex wrench
wrench
wrench to
to
to
loosen
loosen
loosen the
the
the screw
screw
screw (115),
(115),
(115), then
then
then remove
remove
remove the
the
the gearbox
gearbox
gearbox
coupler
coupler
coupler (114).
(114).
(114).
NOTE:
NOTE:
NOTE: If
If
If the
the
the coupler
coupler
coupler does
does
does not
not
not come
come
come off
off
off freely,
freely,
freely,
use
use
use a
a
a bearing
bearing
bearing puller
puller
puller to
to
to remove
remove
remove it.
it.
it. Do
Do
Do not
not
not use
use
use any
any
any
prying
prying
prying tools,
tools,
tools, as
as
as damage
damage
damage to
to
to the
the
the mounting
mounting
mounting flange
flange
flange
on
on
on the
the
the gearbox
gearbox
gearbox could
could
could occur.
occur.
occur.
3A3168R
17
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