Graco SoloTech, Repair And Parts Manual

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Repair
Complete Complete Complete Pump Pump Pump Repair Repair Repair
Disassembly Disassembly Disassembly
Complete pump disassembly is necessary only to
replace the main shaft assembly, for example in the
case of a failed bearing.
Remove Remove Remove the the the Eccentric Eccentric Eccentric Shaft Shaft Shaft
1. Follow the steps in Remove the Hose, page 10 .
2. Follow the steps in Remove the Roller, page 12 .
3. Use external snap ring pliers to remove the
eccentric shaft retaining ring (10) from the motor
output shaft (6).
4. Remove the eccentric shaft (9) from the motor
output shaft (6). Be
Be Be sure sure sure to to to retain retain retain the the the eccentric eccentric eccentric
shaft shaft
shaft key
key
key (56).
(56).
(56).
NOTE: NOTE: NOTE: You may need to use a puller to
disengage the eccentric shaft from the motor
output shaft.
Pump Model Bolt Size
ST10 6 mm
ST23 , ST26 , and
ST30
8 mm
Remove Remove Remove the the the Motor Motor Motor Output Output Output Shaft Shaft Shaft
See Figure 4 on page 15.
1. Remove the four screws (31) and washers (21)
that hold the gearbox and motor assembly (4) to
the pump housing (1).
2. Remove the plastic plugs on the back of the
motor to reveal threaded metric holes for a gear
puller. Inspect the center opening. If it contains
a snap ring, remove it.
3. Use a gear puller to remove the gearbox and
motor assembly. Be
Be
Be sure
sure
sure to
to
to retain
retain
retain the
the
the motor
motor
motor
output output output shaft shaft shaft key key key (57). (57). (57).
NOTE: NOTE:
NOTE: For motor and gearbox repair information,
contact SEW-Eurodrive.
4. Use a flat head screw driver on the inside
diameter to remove the front rotary shaft seal (8).
Discard the seal.
5. Use a large internal snap ring pliers to remove
the retaining ring (7) from the pump housing (1).
6. Gently tap the gearbox end of the shaft (6) with
a rubber mallet to drive the shaft out through the
front of the pump housing (1).
7. Remove and discard the rear rotary shaft seal (5).
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