Troubleshooting Leaks - Graco 16N664 Operation - Repair - Parts

Troubleshooting Leaks

Points A
Point B
Problem
Sprayer is leaking fluid at Points A
Sprayer is leaking fluid at Point B
Sprayer is leaking fluid at Point C
Sprayer is leaking fluid at Points D
30
Point C
Cause
Spray/tip guard assembly is loose.
O-ring inside needle assembly is
worn out.
O-ring on rear of needle assembly is
worn out.
If 3 solutions above do not stop the leaking, replace needle assembly kit.
Prime/spray valve assembly is worn
out.
Pump is worn out.
Troubleshooting
Points D
Solution
Tighten spray/tip guard assembly.
Replace o-ring (108195).
Replace o-ring (108195).
Replace prime/spray valve assem
bly.
If inlet/outlet valve fittings have not
yet been replaced, replace pump
housing only (16M868).
If inlet/outlet valve fittings have
been replaced once or more,
replace complete pump assembly
(16M865).
3A2853C