Graco Husky 1050HP Repair Parts page 18

Repair
Reassemble Reassemble Reassemble the the Center the Center Center Section
Follow all notes in the illustrations. These notes
important information.
contain important important
NOTE: Apply lithium-based grease whenever
NOTE: NOTE:
instructed to grease.
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
NOTE: Follow Steps 2–5 for both the Primary
NOTE: NOTE:
Module Module and the Secondary Module Secondary Air Secondary
2. If removed, grease and install the new pilot valve
cartridges (204*) and cartridge o-rings (219*).
Screw in until seated.
NOTE: NOTE: Cartridges (204*) must be installed before NOTE:
pilot valves (205*) or secondary pilot plugs (220*).
18
Section Section
Primary Air Air
Primary Air
Air Module Air Module. Module
3. Grease and install the pilot valves (205*, primary
side) or secondary pilot plugs (220*, secondary
side). Torque to 20–25 in-lb (2–3 N•m) at 100
rpm maximum. Do not overtorque.
4. Grease and install the diaphragm shaft u-cup
packings (202*) so the lips face out of the
housing.
5. If removed, insert the new bearings (203*) into
the primary air module and/or the secondary
air module. Use a press or a block and rubber
mallet to press-fit the bearing so it is flush with
the surface of the module.
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