Air Valve - Graco Fast-Ball 100 Instructions Manual

Repair
Repair
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as splashing fluid and moving
parts, follow the Pressure Relief Procedure when you
stop dispensing and before cleaning, checking, or
servicing the equipment,
Refer to Parts, page 12, for the numbers provided in
these instructions.
Clean and inspect all parts for wear or damage during
disassembly. Replace parts as needed. Fast-Ball 100
Repair Kit (Part No. 279038) contains replacement
parts. For best results, use all of the parts in the kit. Add
moderate grease to the sealing parts during
reassembly.
NOTE: All of the parts included in the Repair Kit are
marked in Parts, starting on page 12.

Air Valve

Repair Kit 273359 (includes 3), see Parts, starting on
page 12.
Repair Kit 279038 (includes all sealing parts of pump),
see Parts, starting on page 12.
1. Follow the Pressure Relief Procedure, page 7.
2. Disconnect the air hose and fluid hose.
3. Loosen and remove the cylinder screws (28).
4. Remove the air cylinder (1) from the pump base
(16).
5. Inspect the spring (2) and replace, as needed.
6. Use pliers on the air exhaust plate (3a) and a
wrench on the piston shaft (6), press down on the
washer (4) to compress the spring (5) and create
space for the wrench (F
7. Loosen the air valve (3) and remove it from the shaft
(6) (F . 3).
IG
10
. 3).
IG
F . 3
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8. Disassemble the piston.
9. Clean all parts by washing in compatible solvent,
then blow dry the parts.
10. Inspect for any wear or damage. For parts not
included in Repair Kit 279038, replace the air valve
using Repair Kit 273359.
11. Remove the spring (5) and inspect, replace as
needed.
12. Reinstall the spring (5).
13. Reassemble the air valve (3), using new parts as
needed. Apply thread sealant to the threads of the
screws (3e), and torque evenly to 10 to 14 in-lb
(1.13 to 1.58 N•m).
14. Position the washer (4) and the spring (5) into place.
15. Apply thread sealant to the threads of the piston
(3d) and place the air valve (3) onto the shaft (6).
16. Use a strap wrench on the piston (3d) and a wrench
on the shaft (6) then screw the air valve onto the
shaft and torque to 75 to 100 in-lb (8.47 to 11.30
N•m) (F . 4).
IG
3A9292B