20
855 819 R. 03/12
Samson Corporation • One Samson Way • N.C. 28778 Swannanoa • Phone: 00 1 8286868511 • Fax: 00 1 8286868533
2012_03_06-17:30
Repair and maintenance procedures
Ball valves replacement
1. Close fluid valves.
2. Drain the fluid from inside the pump. Anticipate a drainage of fluid from inside the pump.
3. Loosen the screws to remove the directional valve. Take special care with the seals.
4. Remove the valve cover by loosening the screws with an Allen wrench. Take note of the orientation of the cap, as it is critical to replace it correctly
during reassembly.
5. Install a new set of valves according to these assembly drawings. Ensure that the ball guides are assembled as shown in the figure on the left, and
tighten the screws with a maximum torque of 35,4 lbf·in (4 N·m) (for metal bodies) and 30,9 lbf·in (2 N·m) (for acetal and polypropylene bodies)
6. Assemble the directional valve with being careful not to damage the O-rings and tighten the screws with a maximum torque of 44,25 lbf·in (5 N·m).
Attention
To avoid fluid restriction and leakages, follow the position of the vall
checks guides in teh figure above. the valves cups must be placed with the
area indicated in the figure below facing the body.
