Replacement Without Installation Tool; Pump Bearings (30D And 65Dm Only) - Teledyne D series Installation And Operation Manual

9.12.3 Replacement Without
Installation Tool
9.12.4 Pump Bearings
(30D and 65DM Only)
Section 9 Pump Maintenance, Troubleshooting, and Servicing
1. Insert tool into ball screw so that the slot on ball screw and
tool are lined up, then lock with locking pin.
2. Rotate the ball screw until the broken halves of shear key
are realigned (Figure 9-11).
3. Remove the broken shear key halves by gripping them
with pliers or vise grips and pulling them out.
4. Insert the new shear key into the slot with the gap facing
away from the shaft, as shown in Figure 9-11. Push the
shear key about half-way into the worm gear. Do not push
it all the way in.
5. Remove the tool and proceed to the final steps in
Section 9.12.5.
1. Follow steps 1 through 5 in section 9.12.1.
2. Insert the cotter pin into the ball screw, and screw the cas-
tle nut onto ball screw, with the slot on castle nut outward,
as shown in Figure 9-11.
3 
3. Use a " wrench on the castle nut and rotate the ball
4
screw clockwise until the broken halves of the shear key
are realigned (Figure 9-11, above).
Never use tools on the ball screw. Doing so will render it inop-
erable and beyond repair.
4. Remove the castle nut and cotter pin.
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 9-11. 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 9.12.5.
Follow the step by step instructions in Section 9.12.2
Replacement Using Installation Tool, or in Section 9.12.3
Replacement Without Installation Tool. Then proceed with the
instructions in this section.
The 30D and 65DM pumps have an outer bearing set not
included in the other pumps. The set includes two thrust washers
and one thrust bearing (see Figure 9-12).
D Series Syringe Pumps
CAUTION
9-21