Trebor 120D Mega - Manual (Page 23)

MEGA 120D PUMP OPERATION / MAINTENANCE MANUAL PAGE 23
Figure 4-9

Insert shaft through shaft bore as shown in Figure 4-9.

Thread on remaining push plate until push plate bottoms out on shaft shoulder.

The second push plate, while in the pump body, cannot be visually aligned. Tighten
push plate to 48 oz.-in, then insert alignment pin into locking screw hole. Rotate push
plate CW until locking screw hole is aligned with the next available hole in shaft and
alignment pin drops into the shaft hole. Remove alignment pin.

Install push plate locking screw. Tighten to 12 oz.-in.
4.8.f Final Assembly
(See Section 0, Parts Illustration, for reference.)

Insert tie bolts into master head (press fit) and lay head flat with tie bolts sticking up.

Insert main transfer tube and O-ring into head.

Install shuttle transfer tube with two O-rings.

Place main seal into the main seal groove in master head.

Install two diaphragms, removing all air from between diaphragms, onto the tie bolts
and shuttle transfer tube. Note main seal groove alignment.

Place body assembly onto tie bolts and master head, ensuring alignment of shuttle
transfer tube and its corresponding body passage hole.

Place remaining two diaphragms onto tie bolts, body and shuttle transfer tube. Note
main seal groove alignment.

Place two O-rings onto shuttle transfer tube.

Place the main seal O-ring into the formed groove of the slave head.

Place a second main transfer tube and O-ring into slave head.