Trebor 55D EVOLVE - Manual (Page 21)

EVOLVE 55D PUMP OPERATION / MAINTENANCE MANUAL PAGE 21
• Repeat for the second bore.
• Install two shaft seals in shaft bore groove with slits 180° apart.
• Thread push plate onto main shaft until engagement with the shaft shoulder is achieved.
Additionally apply a ¼” turn to ensure proper installation.
• Thread shaft onto shaft insert tool and insert shaft into bore. See Figure 4-6. This
prevents damage to the TFE shaft seals and prevents dislodgement of shaft seals.
Figure 4-6: Shaft Insert Diagram with Tool
• Remove shaft insert tool and thread second push plate until engagement with the shaft
shoulder is achieved. Again, apply a ¼” turn to ensure proper installation.
4.8.c Head and Body Assembly
• Install the mounting fittings in the pump fluid adapter ports
• Thread union nut on one side hand tight. Do not install head or diaphragm at this point.
This will protect body during initial pump assembly.
• Place pump body with the union nut on the table.
• Place one head on the table with the air chamber facing up.
• Insert 8 PP pins into the 8 small holes around the circumference of the main seal.
• Install both diaphragms (make sure the wear resist disk is facing the pump head) onto
the head, ensuring that the PP pins pass through all 8 holes in both diaphragms.
• While holding the diaphragms in place, lift the pump head and place it on the pump
body. Ensure the transfer tube port openings are directed toward the bottom of the
pump. Fit all 8 PP pins into the holes in the pump body.
• While holding the pump head in place, position the slip ring onto the pump head
• Thread the union nut onto the pump body and tighten by hand.