Check Valve Repair - Graco Husky 1050 Repair Parts

Repair

Check Valve Repair

NOTE: Kits are available for new check valve balls and
seats in a range of materials. See page 28 to order kits
in the material(s) desired. An o-ring kit and fastener kits
also are available.
NOTE: To ensure proper seating of the check balls,
always replace the seats when replacing the balls. Also,
on models with manifold o-rings, replace the o-rings.
Disassembly
1. Follow the Pressure Relief Procedure on page 10.
Disconnect all hoses.
2. Remove the pump from its mounting.
NOTE: For plastic pumps
1050F), use hand tools only until thread-locking
adhesive patch releases.
3. Use a 10 mm socket wrench to remove the outlet
manifold fasteners (6). See F
4. Remove the o-rings (12, not used on some models),
seats (10), and balls (11).
5. Turn the pump over and remove the inlet manifold.
Remove the o-rings (12, not used on some models),
seats (10), and balls (11).
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 F . 7. Be sure the ball checks (10-12) and mani-
IG
folds (4, 5) are assembled exactly as shown. The
arrows (A) on the fluid covers must point toward the
outlet manifold (4).
14
(1050P, 1050C, and
. 7.
IG
1
Torque to 100 in-lb (11.3 N•m). See Torque Instructions,
page 18.
2
Arrow (A) must point toward outlet manifold.
3
Not used on some models.
Aluminum pump
shown
5
1 6
F . 7. Ball check valve assembly
IG
1
6
4
11
3
12
10
3
12
3
2
A
7
11
12 3
10
12 3
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