Hydraulic Section Repair
C 2-3
Part 1022914G03
E
2007 Nordson Corporation
Coupling Replacement
1. See Figure C 2-1. Install the coupling sleeve (A) over the connecting
rod (C), making sure the arrow on the side of the sleeve is pointing up.
2. Pull the connecting rod down until it contacts the plunger (8).
3. Install the two coupling halves (D) around the connecting rod and
plunger.
4. Slide the coupling sleeve over the coupling halves. Drive the sleeve
completely over the coupling halves with a rubber mallet.
5. Tighten the two set screws (B) with a
3
/
16
-in. hex wrench to
10.2
±
1 N
D
m (90
±
10 in.-lb).
Hydraulic Section Rebuild
The hydraulic section can be removed from the pump and rebuilt without
removing the pump from its mounting.
Preparation
1. Flush the hydraulic section with a compatible solvent.
2. Remove the coupling as described in
Coupling Removal and
Replacement
in this section.
3. Shut off and lock out the compressed air supply to the pump and relieve
the system fluid pressure.
4. Disconnect the siphon and high-pressure fluid hoses, and the air supply
hose from the air motor. Remove the circulation valve kit, if installed in
the siphon port.
Removal
1. See Figure C 2-2. Remove the customer-supplied fasteners securing
the upper housing (7) to the pump mounting surface.
2. Have someone support the hydraulic section while you remove the three
hex nuts (B) from the air motor studs (A).
3. Lower the hydraulic section off the studs.