Trebor 620E Magnum - Manual (Page 24)

PAGE 24 MAGNUM 620E PUMP OPERATION / MAINTENANCE MANUAL
Figure 4-4

Remove shaft insert tool and thread second push plate onto main shaft.

Thread second push plate onto shaft until push plate bottoms out on shaft
shoulder.

Tighten push plate to 48 oz-in, and then rotate until locking screw hole is
aligned with next available hole in shaft.

Install locking screw and tighten to 12 oz-in.
4.9.b Final Assembly

Reattach pump to assembly fixture.

Attach head to one side of pump body (hand tight). Do not install diaphragm
on this step. This will protect body during initial pump assembly.

Remove pump from the assembly fixture.
 Place pump body with head down and place one diaphragm with “V” groove
point away from the body.

Install head on body hand tight.

Turn pump over and remove head to install diaphragm on other side.

Repeat diaphragm and head installation.

Lock body into mounting fixture.

Using strap wrench, torque heads slowly to a minimum of 100 ft-lbs (not to
exceed 125 ft-lbs) with the wrench at 90° +/- 15° to the heads surface as
shown.
Note: Leak ports must be at or below the center port (horizontal position) when
standing on base.