Nordson ProBlue P4 - Remove the Lower Ball Seat Assembly and the Piston

SP Pump Diagnostics and Repair
D-26
Part 1024496_06
 2014 Nordson Corporation
Remove the Lower Ball Seat Assembly and the Piston
CAUTION: Handle the piston with care. Damaging the precision machined
surface of the piston can result in failure of the pump.
See Figure D‐13.
1. Unscrew the lower ball seat assembly (2) from the pump body.
2. Pull the piston (1) out of the bottom of the pump body.
Check/Repair
Pump body
P/N 1016863
Remove solidified
adhesive before
reassembly
Piston
P/N 1022658
Nicked or worn
Remove solidified
adhesive before
reassembly
Special Reassembly Instructions
 Apply Never‐seez to the threads of the lower ball seat before reinstalling
the seat into the pump body.
 Apply O‐ring lubricant to the lower ball seat O‐ring.