Graco Fusion AP Instructions Manual page 25

7. Pull out side seal cartridges (18).
K
B
18
19
TI2426A
8. Pull mix chamber (19) out rear of fluid housing.
Inspect for damage. Follow the Clean
Impingement Ports procedure, page 23.
9. Apply thin coat of lubricant to mix chamber (19).
Install mix chamber. Etched A and notch (N) must
be on same side as A on fluid housing. Mix chamber
is keyed to fit in fluid housing.
To prevent cross-contamination in the gun, do not
interchange A component (isocyanate) and B
component (resin) parts. Cross-contamination can
result in cured material in the gun. Cured material may
damage the sealing surfaces, block fluid passages,
and prevent gun function.
10. Carefully inspect side seal cartridge o-rings and
surfaces. Replace worn or damaged parts. Liberally
lubricate o-rings (18d, 18e) and reassemble. Press
on side seal (18c) to check proper spring (18b)
operation.
18e
18c
18b
309550ZAP
24
A
19
B
A
TI2428A
N
NOTICE
18d
11. Lubricate and reinstall side seal cartridges (18).
To prevent cross-contamination in the gun, do not
interchange A component (isocyanate) and B
component (resin) parts. Cross-contamination can
18
result in cured material in the gun. Cured material may
damage the sealing surfaces, block fluid passages,
and prevent gun function.
18
TI2426A
12. Lubricate all threads and reinstall retaining ring (9).
Install air cap (10).
10
13. Follow the Attach Front End procedure, page 29.
14. Connect air and trigger the gun a few times to check
for leaks. If either check valve pops out of its seated
position, there is a poor fluid seal on that side of the
mix chamber or side seal/cartridge components.
Correct the problem before attaching the fluid
manifold.
15. Attach fluid manifold. Connect air. Return gun to
service.
TI2427A
NOTICE
24
B
9
Maintenance
A
18
TI2424A
25