User's Manual

Repair

3A0411F 11

Reassemble the Air Valve

NOTE: Apply lithium-based grease whenever instructed

to grease. Order Graco PN 111920.

1. Use all parts in the repair kits. Clean other parts and

inspect for damage. Replace as needed.

2. Grease the detent cam (204◆) and install into hous-

ing (201).

3. Grease the u-cups (208◆†) and install on the piston

with lips facing toward the center of the piston.

4. Grease both ends of the piston (202◆) and the

housing bore. Install the piston in the housing (201),

with the flat side toward the cup (213◆). Be careful

not to tear u-cups (208◆†) when sliding piston into

housing.

5. Grease new o-rings (206◆†✠) and install on the end

caps (207✠). Install the end caps into the housing.

6. Install a retaining ring (210✠) on each end to hold

end caps in place.

IG. 1. Air valve u-cup installation

Lips face down

Lips face up

208◆†

202◆

ti12754a

FIG. 2. Air valve assembly

210✠

207✠

206◆†✠

208◆†

202◆

209◆†

205◆

212◆

◆ 211

203 ◆

204◆

ti17765a

201

Apply lithium-based grease.

U-cup lips must face piston.

207✠

214◆

213◆

Apply lithium-based grease to contact surface.