StediFlo
t
57:1 Pump
26
Part 1601882-01
E
2012 Nordson Corporation
Cylinder and Piston Removal
1. Use 2 wrenches to remove the coupler (Figure 4, item 1) from the motor
axle (66).
2. Remove the cylinder, piston, and connecting rod (55, 57, 68) from the
lower cylinder plate (74).
3. Place the cylinder on an even, padded surface, and press the piston and
connecting rod out of the cylinder. Use a rubber mallet if necessary.
Piston Disassembly
1. Remove the O-ring and guide ring (56, 58) from the piston (57).
2. Clamp the piston in a bench vise with the motor axle (66) facing out.
3. Unscrew the motor axle from the piston plate with a wrench. If the
motor axle cannot be turned, heat the connection to soften the
threadlock adhesive.
4. Remove the disc and O-ring (59, 60) from the piston plate.
5. Remove the connecting rod (55), stop bolt (64), spring washer (63),
spring (65), and guide (61) from the motor axle.
Lower Cylinder Plate Disassembly
1. Remove the O-ring (69) from the lower cylinder plate.
2. Use retaining ring pliers to remove the retaining ring (72) from the lower
cylinder plate.
3. Press the guide bushing (46) out of the lower cylinder plate from the
bottom, using the disassembled motor axle, if necessary.
Cleaning and Inspection
Clean all air valve and motor parts thoroughly. Carefully inspect all parts.
Replace parts that are worn, cracked, pitted, or scored. Replace all parts
included in the seal kit and repair kit. The parts lists notes both the wear
items and items included in the kits.
NOTE:
Refer to the Service Notes on Figure 7 while re-assembling the air
motor.
Lower Cylinder Plate Assembly
1. Lightly grease the guide bushing (46) with O-ring grease, then press it
into the lower cylinder plate (74). Use a rubber mallet if necessary.
2. Use retaining ring pliers to install the retaining ring (72) in the lower
cylinder plate.
3. Grease the O-ring groove in the lower cylinder plate and install the
O-ring (69) in the groove.
