D-Series Syringe Pumps - Isco

D Series Syringe Pumps
Section 5 Pump Maintenance & Repair
5. Remove the broken shear key halves by gripping them
with pliers or vise grips and pulling them out.
6. Insert the new shear key into the slot with the gap facing
away from the shaft, as shown in Figure 5-4. Push the
shear key about 1/2-way into the worm gear. Do not push it
all the way in.
7. For 65DM pumps, proceed to the next section. For all other
pump models, proceed to the final steps in Section 5.8.4.
5.8.3 Pump Bearings
(65DM Only)
Follow the step by step instructions in Section 5.8.1 Replacement
Using Installation Tool, or in Section 5.8.2 Replacement Without
Installation Tool. Then proceed with the instructions below.
The 65DM pump has an outer bearing set not included in the
other pumps. The set includes two thrust washers and one thrust
bearing (see Figure 5-5 below).
1 2 3
Figure 5-5 65DM Bearing set
Note that the 65DM spacer is shaped differently from that of
other pump models, and must be properly oriented during reinstallation,
Figure 5-6.
When performing shear key replacement on the 65DM pump, use
care to keep the bearings in position, with the bearing between
the two washers, while installing the spacer.
5-12