Replace Seals Or Rebuild Air Valve - Graco Husky 1050HP Repair Parts

Repair
Replace Seals Seals or or or Rebuild
Replace Replace Seals
Follow these instructions to service the air valve with
one of the available repair kits. Air Valve Seal Kit
parts are marked with a †. Air Valve Repair Kit parts
are marked with a ♦. Air Valve End Cap Kit parts
are marked with a ‡. Kit 24W952 also is available to
replace the 6 o-rings between the air valve and the
High/Low manifold.
Disassemble the the Air Air Valve
Disassemble Disassemble the Air
1. Perform steps 1-3 under
Replace Complete Air Valve, page
2. Use a T8 Torx screwdriver to remove two
screws (309). Remove the valve plate (305), cup
assembly (312-314), spring (311), and detent
assembly (303).
3. Pull the cup (313) off of the base (312). Remove
the o-ring (314) from the cup.
4. Remove the retaining ring (310) from each end
of the air valve. Use the piston (302) to push
the end cap (307) out of one end. Remove the
u-cup seal (308) from the piston. Pull the piston
out of the end and remove the other u-cup seal
(308). Remove the other end cap (307) and the
end cap o-rings (306).
5. Remove the detent cam (304) from the air valve
housing (301).
Reassemble Reassemble Reassemble the the Air the Air Air Valve Valve Valve
NOTE: NOTE: Apply lithium-based grease when instructed NOTE:
to grease. Order Graco PN 111920.
12
All manuals and user guides at all-guides.com
Rebuild Air Air Valve Valve
Rebuild Air Valve
Valve
Valve
10.
1. Use all parts in the repair kits. Clean other parts
and inspect for damage. Replace as needed.
2. Grease the detent cam (304♦) and install into
housing (301).
3. Grease the u-cups (308♦†) and install on the
piston with lips facing toward the center of the
piston.
Lips face
down.
down. down.
Lips face
up.
up. up.
4. Grease both ends of the piston (302♦) and the
housing bore. Install the piston in the housing
(301), with the flat side toward the cup (313♦).
Be careful not to tear u-cups (308♦†) when
sliding piston into housing.
5. Grease new o-rings (306♦†‡) and install on the
end caps (307‡). Install the end caps into the
housing.
6. Install a retaining ring (310‡) on each end to hold
end caps in place.
334390E