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| 607 PRO Challenger
Series
www.natvac.com | 800.253.5500
20� Remove the seals from the
endplates� Inspect for
damage, the seals should be
soft and pliable�
Clean the endplate as needed�
Apply new lubricant along the
seal pilot in each of
the endplates�
The seals need to be installed
back to back� The faces without
the oil groove should be touching�
We recommend using a seal
driver tool to properly seat the
seals in the endplate� Drive the
seals into the endplate�
Repeat for both endplates�
22� Install two (2) 3/8-16 threaded
dowels so that they can
support the weight of the
endplate for installation�
Install one (1) new endplate
gasket between the housing and
the endplate, do not use any
gasket sealer�
Carefully guide the endplate onto
the rotor and threaded
rod segments
21� Lubricate the roller bearing
pilot in the endplate� Using a
bearing driver, seat the roller
bearing into the endplate�
Repeat for both endplates�