National Vacuum Equipment 607 challenger series Replacement And Rebuild Manual - (Fan Cooled Only) Remove
12
| 607 Challenger
Series
www.natvac.com | 800.253.5500
8 Place a cushion beneath the
rotor to prevent damage when
the front endplate is unbolted
(cardboard, rag, etc )
9
(Fan Cooled Only) Remove the
fan guard on the drive end side
of the pump Remove the fan
and key from the rotor drive end
by first loosening the fan hub
screw. You may find it neces-
sary to drive the hub apart with
a screw driver in order to slide
the fan assembly off of the rotor
10 Repeat step 6 to drop the rear
end of the rotor down onto the
cushion
(Fan Cooled Only) Remove
the six (6) hex bolts holding
the aluminum fan shroud to the
front endplate and remove the
shroud
11 Gently guide the front end-
plate off of the (2) 3/8-16
threaded rod segments to
fully settle the rotor body on
the base of the housing bore
Remove the rotor with care
from the housing. Place a Tag
on the housing side that corre-
sponds to your drive end side!