Graco XP35 - Page 47

Troubleshooting
3A0420ZAF 47
Pump Troubleshooting
This chart uses proportioning fluid gauges to determine pump malfunctions. Observe the gauge readings during the
stroke direction indicated by the bold arrow, and immediately after closing the gun or mix manifold. Refer to other
manuals to troubleshoot individual components.
WLD
WLD
WLD
WLD
TROUBLE AREA:
Resin Pump Leakage
1. Throat packing
2. Piston packing
3. Piston ball check
Resin
Pump
Falling Rising
Hardener
Pump
FallingFalling Rising Rising
TROUBLE AREA:
Hardener Pump Leakage
1. Throat packing
2. Piston packing
3. Piston ball check
TROUBLE AREA:
Resin Pump Leakage
1. Throat packing
2. Intake ball check
TROUBLE AREA:
Hardener Pump Leakage
1. Throat packing
2. Intake ball check
Resin
Pump
Hardener
Pump
FallingRising
Resin
Pump
Hardener
Pump
Resin
Pump
Hardener
Pump
r_258914_3a0420a_11a
r_258914_3a0420a_10a