Disassembly, Inspection & Reassembly
216 Series Twin-Screw Pump -
Installation, Operation, and Maintenance Manual
59
2. Use jackscrews tapped holes to break the bond between the cover D (407) and the pump
casing (350). Continue to jack cover D (407) evenly until both bearings (103) are free of
the screw shafts (100).
3. Remove cover D (407) intact with bearings (103), oil seals (721), seal cover (494), O-ring
(703), screws (471), stationary mechanical seal seat (702) and anti-rotation pin (480).
4. Remove gasket (439)
5. Remove screws (310) which secure the gear housing (406) to the cover DF (401).
6. Use jackscrews tapped holes to break the bond between the gear housing (406) and the
cover DF (401).
7. Remove gear housing (406), oil seal (704) and gasket (440) from the cover DF (401).
8. Remove both locknuts (110) to loosen both spur gears (108) from the screw shafts (100).
9. Remove both spur gears (108) from the screw shafts (100). Remove both keys (132).
10. Remove both distance bushings (124) from the gear side of the screw shafts (100).
11. Use a suitable manual or hydraulic tool to apply and even axial pressure to the DE shaft
ends of both screw shafts (100). Using this tool press both screw shafts (100) until they
are free of bearings (105).
12. Use jackscrews tapped holes to break the bond between the cover DF (401) and the
pump casing (350).
13. Remove cover DF (401) intact with bearings (105), oil seals (721), seal cover (494),
O-ring (703), screws (471), stationary mechanical seal seat (702) and anti-rotation pin
(480).
14. Remove gasket (439)
15. Remove both screw shafts (100) simultaneously out of the liner (352). Retain bushings
(725, 726). It is not recommended to remove bushings (725, 726) unless they are worn.
Remove the rotating portion of the mechanical seal (702) from screw shafts (100).
16. Remove the pump liner (352) from the pump casing (350).
17. Remove screws (471) then remove seal cover (494) and O-ring (703) from cover D (407).
Remove the stationary portion of the seal (702), anti-rotation pin (480) and oil seals (721)
from the seal cover (494).
18. Remove bearings (103) and oil seals (721) from cover D (407).
19. Remove screws (471) then remove seal cover (494) and O-ring (703) from cover DF
(401). Remove the stationary portion of the seal (702), anti-rotation pin (480) and oil
seals (721) from the seal cover (494).
20. Press out bearings (105) from cover DF (401).
21. Remove and retain shims (130), (131) from cover DF. It is recommended that the shims
are match marked to assure current placement on reassembly.
22. Press out oil seal (704) from gearbox housing (406).
