Repair
RemoveRemove
Remove
thethe
the
EccentricEccentric
Eccentric
ShaftShaft
Shaft
1. Using external snap ring pliers, remove the
eccentric shaft retaining ring (8) from the motor
output shaft (2).
2. Remove the eccentric shaft (7) from the motor
output shaft. BeBe
Be
suresure
sure
toto
to
retainretain
retain
thethe
the
eccentriceccentric
eccentric
shaftshaft
shaft
keykey
key
(6).(6).
(6).
NOTE:NOTE:
NOTE:
You may need to use a puller to
disengage the eccentric shaft from the motor
output shaft.
RemoveRemove
Remove
thethe
the
MotorMotor
Motor
OutputOutput
Output
ShaftShaft
Shaft
NOTE:NOTE:
NOTE:
The motor output shaft is held in place with
a retaining ring (3) located behind the outer u-cup
seal (4). The outer seal must be removed before
removing the retaining ring. This seal will likely be
damaged when removed since it is held in place by
a tight press t.
1. Using a at head screw driver, remove the outer
u-cup seal (4).
2. Using internal snap ring pliers, remove the
retaining ring (3) from the pump housing (1).
3. Remove the four screws (109) and washers (108)
holding the gearbox and motor assembly (107)
to the pump housing (1). Remove the gearbox
and motor assembly to allow access to the inner
u-cup seal (5). BeBe
Be
suresure
sure
toto
to
retainretain
retain
thethe
the
motormotor
motor
outputoutput
output
shaftshaft
shaft
keykey
key
(106).(106).
(106).
NOTE:NOTE:
NOTE:
For motor and gearbox repair information,
contact SEW-Eurodrive.
4. Remove the inner u-cup seal (5). This seal will
likely be damaged when removed since it is held
in place by a tight press t.
5. Tap the gearbox end of the shaft (2) with a rubber
mallet to drive the shaft out through the front of
the pump housing (1).
Figure 6 Remove the Eccentric Shaft and Motor Output Shaft
3A1940G
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