Trebor 50D Maxim - Manual (Page 21)

MAXIM 50D PUMP OPERATION / MAINTENANCE MANUAL PAGE 21

Install union nut on pump while gently pressing down on the head to engage
tabs in head and body, spin union nut down hand tight.

Turn pump over and remove union nut to install diaphragms.

Repeat diaphragm, head and union installation.

Lock body into mounting fixture.

Using strap wrench, torque union nuts slowly to 75 ft-lbs with the wrench at
90° +/- 15° to the nut’s surface as shown.
Figure 4-6

Wrap each transfer tube with 3 wraps of Teflon tape and reinstall into the
head ports using latex glov es for added grip. Leave a protrusion height of 2”
for each transfer tube.
 Thread pilot assembly and seal into head using 3/4” pilot centering pin tool,
torque to 35in-lbs.
 Position pilot cap seal into bore and thread in pilot cap using 3/4” pin tool,
torque to 30in-lbs.

Position control base on mounting base, slide base forward, use locking lever
to secure.

Ensure that the ferrule of the quick grip nut is inserted into the transfer tube
port of the base. Place the gripper seal on top of the ferrule with the tapered
end facing up.

Loosely attach quick grip nuts to transfer tube ports on control base taking
care not to dislocate the ferrule and gripper seal.

Install pump onto control base by inserting transfer tubes in pump into quick
grip nuts on control base.

To secure pump to control base, tighten quick grip nuts one (1) full turn past
hand tight using 13/16” wrench.

Reconnect both air supply and fluid lines.
4.9 TESTING
4.9.a Performance Test

With the air supply at 0 psi open the air supply valve