National Vacuum Equipment 607 challenger series Replacement And Rebuild Manual page 16

16 | 607 Challenger Series
20� Remove the seals from the
endplates� Inspect for dam-
age, the seals should be soft
and pliable�
Clean the endplate as needed�
Apply new lubricant along the
seal pilot in each of the end-
plates�
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�
21� Lubricate the roller bearing
pilot in the endplate� Using a
bearing driver, seat the roller
bearing into the endplate�
Repeat for both endplates�
22� Install two (2) 3/8-16 threaded
dowels so that they can sup-
port the weight of the end-
plate for installation�
Install one (1) new endplate gas-
ket between the housing and the
endplate, do not use any gasket
sealer�
Carefully guide the endplate onto
the rotor and threaded rod seg-
ments
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