Goulds Pumps 3640 - IOM - Manual (Page 65)

Maintenance
Disassemble the rotating assembly
1. Loosen and remove the head to case nuts (425).
2. Use the jackscrews provided with the pump in order to loosen the head (184) from the
casing (100).
Items 315, 356K, 357K and 360M are not required to be removed. If 315 is removed,
gasket 360M must be inspected before reassembly.
WARNING:
Never use heat to disassemble the pump due to the risk of an explosion from trapped liquid.
3. Push the shaft assembly towards the radial end until it stops. Maintain this position until the
next step is completed.
4. Insert eyebolts (not supplied) in the pre-drilled threaded holes in the top outside perimeter
of the head.
WARNING:
Use the eyebolts to lift only the head. They will not support the weight of the entire pump.
5. Slide the head out of the pump without the rotor.
6. Remove the head (184) from the casing (100) to the work area.
Model 3640 Installation, Operation, and Maintenance Manual 63