User's Manual

Rebuild
313876F 37
Micrometer Drive Rebuild
(Micrometer PD44 Only)
1. Perform Wetted Section Disassembly, page 30.
2. Remove the four cap screws located at the top of
the pneumatic drive assembly.
3. Remove the drive top cap.
4. Slide the drive rod into the open slot.
5. Slide the pneumatic drive piston off the drive rod.
6. Slide the air cylinder mounting block off the drive
rod.
7. Install new seals on the drive piston. Make sure the
lip of the seal points toward the pressure side of the
drive. See the following illustration and the assembly
drawings for more information.
8. Remove retaining ring, washer, and posipak seal
from the air cylinder mounting block.
Cap Screws
Drive Top Cap
Retaining Ring
Washer
Posipak Seal