Trebor 620D Magnum - Manual (Page 20)

PAGE 20 MAGNUM 620D PUMP OPERATION / MAINTENANCE MANUAL
Figure 4-5

Insert suction sleeve, check ball and O-ring carefully into check bore.
NOTE: The Suction Sleeves have a shoulder diameter larger than their body
diameter. Additionally the Suction Sleeves when compared to the Discharge
Sleeves have a thicker top region which acts as a robust contact point for the O-
rings.

Repeat insertion process with the discharge sleeve, check ball and O-ring.

Repeat process for second check bore.

Replace seals and tighten check bore caps to 45in-lbs.
 Install seal and damper plug using 3/4” pin tool. Torque to 45in-lbs.

Install two shaft seals in shaft bore groove with slits 180

apart.

Thread shaft into push plate until engagement with the shaft shoulder is
achieved. Finally, apply a ¼” turn to ensure proper installation .

Insert shaft through shaft bore using shaft bullet as shown (This prevents
damage to the TFE shaft seals and prevents dislodgement of shaft seals).