Service
Reconnecting the Displacement Pump
CAUTION
Be sure to use at least two people when lifting, moving, or disconnecting the pump. This pump is too heavy for one person. If you are disconnecting the displacement pump from a motor which is still mounted (for example, on a ram), be sure to support the displacement pump while it is being discon- nected, to prevent it from falling and causing injury or property damage. Do this by securely bracing the pump, or by having at least two people hold it while another disconnects it.
NOTE: On Premier models, ensure that the rod adapt- er (102) has not loosened during maintenance. Proper torque is necessary to prevent the rod adapter from loosening during the pump operation.
If the rod adapter (102) has loosened during mainte- nance, remove the adapter and apply LoctiteR 2760t (or equivalent) to the rod adapter and air motor piston threads, and then torque as specified in Fig. 6.
1.Use at least two people to hold the displacement pump while another reconnects it to the motor (see the CAUTION above). Orient the pump’s fluid outlet to the air or hydraulic inlet as was noted in step 3 under Disconnecting the Displacement Pump. Position the displacement pump (105) on the tie rods (107). See Fig. 6.
2.Screw the nuts (106) onto the tie rods (107) and torque as noted in Fig. 6.
3.Place the coupling nut (103) on the displacement rod (1), then place the coupling collars (108) into the nut. Loosely screw the coupling nut onto the connecting rod adapter (102) or connecting rod (109, Model 222940 only). Hold the adapter or connecting rod flats with a wrench to keep it from turning. Use an adjustable wrench to tighten the coupling nut. Torque as noted in Fig. 6.
4.Torque the packing nut (2) to
5.Reconnect all hoses. Reconnect the ground wire if it was disconnected. Fill the
6.Turn on the air or hydraulic power supply. On hydraulic pumps, open the hydraulic return line valve first, then the supply line valve. Run the pump slowly to ensure that it is operating properly.
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