SP Pump Diagnostics and Repair
D-20
Part 1024496_06
2014 Nordson Corporation
Remove the Piston Cups
See Figure D‐10.
1. While holding the piston in‐place by its wrench flats, remove the M6
torque nut (1).
2. Remove the two piston cups (4) and the piston seal washers (2 and 3).
Check/Repair
Piston cups
P/N 163039
Not torn or deteriorated
Pliable
Apply Parker lubricant
during reassembly
Special Reassembly Instructions
To prevent damage to the upper piston cup when reinstalling the cylinder,
install only the bottom seal washer, the bottom piston cup, center seal
washer, and the torque nut (loose). The remaining piston cup and washer
are not installed until after the cylinder is in‐place.
Refer to Remove the Actuator and Air Manifold and the Cylinder
Assembly.
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