Disassembly, Inspection & Reassembly
236 Series Twin-Screw Pump -
Installation, Operation, and Maintenance Manual
59
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Dial indicators
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Drill
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Feeler gauges
•
Hex wrenches
•
Induction heater
•
Lifting sling
•
Micrometers (inside and outside)
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Open end wrenches
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Press
•
Soft face hammer
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Spanner wrench
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Spanning type puller
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Tap
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Torque wrench with sockets
•
Lifting eyebolt (dependent on pump / motor size)
Prepare for disassembly
1. Close the isolation valves on the suction and discharge sides of the pump.
2. Drain the process fluid from the piping; flush the pump if necessary.
3. Disconnect all auxiliary piping, tubing, and coupling guard that will interfere with the removal of the
pump assembly.
4. Remove shaft coupling with spanning type puller
5. Remove the oil drain plug (443) and sealing washer (479) from the bottom of the gear housing (406)
and drain the oil. Dispose of the oil in accordance with applicable regulations
6. Loosen the relief valve guide rod and make sure the RV spring compression is released and brought to
free length state.
Disassembly of the pump (standard component method)
WARNING:
Lifting and handling heavy equipment poses a crush hazard. Use caution during lifting and
handling and wear appropriate Personal Protective Equipment (PPE, such as steel-toed
shoes, gloves, etc.) at all times. Seek assistance if necessary.
1. Remove screws (435) which secure cover KA (410) to cover D (407).
2. Use jackscrews tapped holes to break the bond between cover KA (410) and cover D
(407).
3. Remove cover KA (410) and gasket (448)
