Graco Fast-Ball 222051, Инструкция по эксплуатации

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Service
307906ZAA 9
Service
NOTE:
• Clean and inspect all parts for wear or damage
when disassembled. Replace parts as needed.
Fast-Ball Repair Kit 247431 is available. For best
results, use all the parts in the kit.
• In the following instructions, the parts included in the
kit are marked with an asterisk in the text, figures,
Parts Drawing and Parts List.
• Cup Packing, Part No. 162871 and Packing O-Ring
Part No. 154662 are required for servicing pump
Model 685438.
• Piston Cup, Part No. 116152 (included in Fast-Ball
Repair Kit 247431) can be discarded when servicing
pump 685438.
Intake Valve
See the
Parts Drawing
, page 12.
1. Relieve the pressure, page 7.
2. Unscrew the valve housing (2). Remove the o-ring
(22*), ball (23), and retainer (20).
3. Inspect the parts for wear or damage. If the ball in
nicked, replace it. Apply liquid sealant to the male
threads and reassemble.
Air Motor
See F
IG
. 3, page 11.
1. Relieve the pressure, page 7.
2. Remove the air hose and fluid hoses.
3. Place the air motor base (5) in a vise.
4. Remove the air cap (2). Gently pry the coils of the
spring (17) to remove the spring. Check the spring
for wear or damage and replace if needed.
5. Use a strap wrench to unscrew the air cylinder (4)
from the base (5).
6. Unscrew the air piston assembly (15) from the pis-
ton rod (10). Use pliers on the air exhaust plate
(15c*) and a wrench on the piston rod. See the
Pis-
ton Detail in F
IG
. 3, page 11.
NOTE: Old, cured thread sealant on the piston rod
threads make it necessary to use tools to remove the air
piston assembly from the piston rod.
Do not use these
tools when you screw the air piston assembly onto
the piston rod.
7. Disassemble the air piston assembly (15). See the
Piston Detail in F
IG
. 3, page 11. Clean all parts and
inspect them for wear or damage. If any valve plate
spacers are damaged, replace all three in order to
maintain the correct clearance between the valve
plates and seals.
8. Check the spring (8) for wear or damage and
replace as needed.
9. Apply sealant such as Loctite
®
green to the threads
of the screws. Assemble the parts as shown in the
Piston Detail in F
IG
. 3, page 11. Torque the screws
to 10 to 14 in.-lbs (1.3 to 1.6 N•m).
To reduce the risk of injury from trapped air pressure
when servicing the air motor, always remove the air
cap (2) from the air cylinder (4) before removing the
air cylinder from the base (5).