Ball Check Valve Repair - Graco Husky 1040 Instructions-Parts List Manual

Ball Check Valve Repair
'
Tools Required
.
Torque wrench
.
10 mm socket wrench
o
O-ring pick
Disassembly
NOTE: A
Fluid
Section Repair Kit is available. Referto
page 23
to orddr the conect kit for your pump. Parts
included
in
the kit are marked with an asterisk, for
example'(201*). Use
allthe
parts
in
the kit
forthe
best
results.
,
NOTE:
To
ensure proper seating
of
the balls (301),
always replace the seats (201) when replacing the
balls.
Also, on some models, replace the o-rings (202).
1.
Relieve
the pressure.
Disconnect
all hoses.
2.
Remove
the pump from its mounting
3.
Using
a
10 mm socket wrench, remove the four
bolts (106) and nuts (114, used on sfain/ess sfee/
pumps
only) holding the outlet manifold (103) to
the fluid covers (101). See Fig. 12.
4.
Remove
the o-rings (202, not used on some
models), seats (201), and balls (301) from the
manifold (103).
5.
Turn
the pump over and remove the inlet manifold
'
(102). Remove the o-rings (202, not used on some
models),
seats (201), and balls (301) from the fluid
covers (101).
Reassembly
1.
Clean all parts and inspect for wear or damage.
Replace parts as needed.
2.
Reassemble
in
the reverse order, following
all
notes in Fig. 12. Be sure the ball checks and
manifolds are assembled exactly as.shown. The
arrows (A)
on the fluid
Govers
(101)
must
point
toward the outlet_manifold
(103).
:
Apply medium-strength (blue)
Loctite@
or
equivalent to
the
threads,
and torque
to
120-150
in-lb (14-17
N.m).
Arrow (A) must point
toward outlet manifold (103).
Beveled seating surface
must face
the ball (301).
Not used on
some
models.
Aluminum Model Shown
Service
A
A
A
A
Ar
Al\
103
301"
201-A
202*a
101
301
*
201-l\
202*a
102
Fig.12
7
To reduce
the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on
page
10.
IVtrrTENINTd
i
16
308-479
106l\
026474