Trebor 620D Magnum - Manual (Page 21)

MAGNUM 620D PUMP OPERATION / MAINTENANCE MANUAL PAGE 21
Figure 4-6
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 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 w ith “V” groove
point away from the body.

Install pilot and pilot seat into heads. Torque pilot seats to 15in-lbs.

Install head on body hand tight.

Turn pump over and remove union nut to install diaphragms on other side.

Repeat diaphragm and head installation.

Lock body into mounting fixture.

Using a strap wrench, torque heads slowly until heads are oriented into
horizontal alignment of transfer tube holes. See Figure 4-7 with the wrench
at 90° +/-
15° to the nut’s surface as shown.
Figure 4-7