Check Valve Repair - Graco Husky 1050HP Repair Parts

Repair
Check Valve Valve Repair Repair
Check Check Valve Repair
NOTE: Kits are available for new check valve balls
NOTE: NOTE:
and seats. See Seats and Check Balls
to order kits in the material(s) desired. O-ring and
fastener kits also are available.
NOTE: NOTE: To ensure proper seating of the check balls, NOTE:
always replace the seats when replacing the balls.
Also, replace the o-rings every time the manifold is
removed.
Disassemble the the Check Check Valve
Disassemble Disassemble the Check
1. Follow the Pressure Relief Procedure, page
Disconnect all hoses.
2. Remove the pump from its mounting.
3. Use a 10 mm socket wrench to remove the
manifold fasteners (5), then remove the outlet
manifold (3).
4. Remove the o-rings (9), seats (7), and balls (8).
5. Remove the nuts (27).
6. Turn the pump over and remove the inlet
manifold (4).
7. Remove the o-rings (9), seats (7), and balls (8).
Reassemble Reassemble Reassemble the the Check the Check Valve Check
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
2. Reassemble in the reverse order, following all
notes in the illustration. Put the inlet manifold on
first. Be sure the ball checks (7-9) and manifolds
(3, 4) are assembled exactly
must seat on the chamfered side of the seat.
The arrows (A) on the fluid covers (2) must
toward the outlet manifold (3).
16
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Valve
Valve
10.
Valve Valve
exactly as shown. The ball
exactly
must point
must
Figure 2 Check valve assembly
Torque to 100 in-lb (11.3 N·m).
Follow torque sequence. See
Torque Instructions, page
Arrow (A) must point toward outlet
manifold
The chamfered side of the seat must face
the ball.
24.
334390E