TM 5-3825-226-24
WATER PUMP SHAFT SEAL
INSTALL WATER PUMP SHAFT SEAL
NOTE: The mechanical shaft seal is a precision
device. Be careful not to scratch the lapped sealing
faces (11) of the seal washer (9) and seal floating
seat (12). If reinstalling a used seal, it is desirable
to relap both sealing faces (11).
1.
Clean the pump housing (14) and polish the
pump shaft sleeve (16) and lapped sealing
faces ( 1).
2.
Place a small amount of light oil on the pump
shaft sleeve (16) and lapped sealing faces (1).
3.
Using your fingers, install the assembled seal
ring (13) and seal floating seat (12) into the
pump gland (13) (seal ring should be tight
against flatten seat (12)).
4.
Clean
and
re-oil
pump
shaft
sleeve,
if
necessary.
NOTE: Be sure seal washer (9) notches are
engaged in seal driving dents (8) and that seal
retainer lugs (3) are engaged into seal retainer shell
(10).
NOTE: When sliding seal assembly onto pump
shaft sleeve (16), be sure to press only on the outer
end of seal bellows (6) and seal driving band (5).
5.
Slide seal assembly (seal washer (9), disc (7),
retainer shell (10), bellows (6) and driving band
(5)) onto pump shaft sleeve (16). Seal washer
(9) and should go first. (In some instances a
press
may
be
necessary
to
install
seal
assembly).
6.
Install seal spring retainer (4).
7.
Slip seal spring (2) into place against seal spring
retainer (4).
6-28
