Graco XM PFP 273231, Repair And Parts Manual

Page: 19 / 68

Repair
3A8047B 19
Air Controls
Remove Control Box Shrouds
1. Close main air shutoff valve on air supply line and
on system. Depressurize air line.
2. Remove four nuts (21) and then remove front and
rear shrouds (19, 20).
Remove Air Control Assembly (18)
1. Remove Control Box Shrouds .
2. Disconnect air motor air lines and system air line.
3. Remove four nuts (17) from front of air controls (18).
See F
IG
. 1, page 20.
4. Pull out assembly (18).
5. Follow steps in reverse order to reinstall air control
assembly.
Replace Flush Pump Air Ball Valve (626)
1. Remove Air Control Assembly (18) , see page 19.
2. Remove two nuts (630) from front of air control
bracket (619). See F
IG
. 1, page 20.
3. Disconnect air line (632) running to ball valve
assembly (626).
4. Replace with new ball valve assembly. See part
number shown in the System Air Controls Module
(255761) section beginning on page 50.
5. Follow steps in reverse order to reassemble.
Replace Flush Pump Air Regulator (625)
1. Remove Air Control Assembly (18) , see page 19
2. Remove regulator nut (631), and disconnect air
lines (632, 633) running to regulator (625). See F
IG
.
1 on page 20.
3. Remove regulator assembly and replace with new.
See part number shown in the System Air
Controls Module (255761) section beginning on
page 50.
4. Follow steps in reverse order to reassemble.
Replace System Air Regulator (645)
1. Remove Air Control Assembly (18) , see page 19
2. Remove regulator nut and disconnect system air
line. See F
IG
. 1, page 20.
3. Remove screws from quick clamps and open
clamps (642) at hinge.
4. Remove regulator assembly (645) and replace with
new.
5. Follow steps in reverse order to reassemble.
21
20
19
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