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Page Title:
Figure 24. Pulling impeller from pump shaft. |
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  TM 5-6115-400-35
(9) Using tools as shown in figure 27, press
pulley hub onto shaft making sure that
key. is alined with keyway in pulley hub.
(10) Install washer and nut. Tighten nut to a
torque of 50 ft. lbs. Aline nearest slot in
nut with cross-drilled hole in shaft and
install cotter pin.
(11) Using a new gasket, position pump body,
with seals installed, on bearing sleeve,
alining the drilled stud holes, and securing
sleeve to body temporarily with a bolt and
nut to facilitate easier installation of
impeller on the pump shaft.
(12) If original impeller is to be reused, install
impeller as follows:
(a) Drive the old retaining pin from
impeller.
Note.
Make certain that ceramic sealing
ring bonded to impeller is thoroughly
cleaned before assembling. Use an
absorbent paper or lint-free cloth for
cleaning.
If thorough cleaning
cannot be accomplished this way,
use a solvent and then wipe clean.
DO NOT APPLY OIL OR GREASE TO
THE CERAMIC SEALING RING.
Figure 24. Pulling impeller from pump shaft.
(b) Start impeller on the pump shaft so
that drilled hole in impeller is turned
1800 from its original position and
(4) Press front ball bearing onto the shaft,
install impeller retaining nut; tighten
positioning bearing against shoulder of the
nut to 30 ft. lbs.
shaft. Install key in keyway of shaft.
torque and install cotter pin.
(5) Using tools as shown in figure 27, install
(c) Using a sharp 1/8 inch diameter drill
roller bearing in its bore in bearing sleeve.
inserted into drill hole in impeller,
Install snap ring.
drill hole in shaft until total depth of
(6) Install pump shaft and ball bearing as an
the hole is 29/32 inch.
Install
assembly into bearing sleeve by tapping
groove pin so that outer end of pin
on end of shaft with a soft hammer, using
is 1/16 inch below surface of
as little force as possible.
impeller and stake (or peen) pin in
Caution:
place.
Make sure that roller bearing race on
(13) If a new impeller is to be installed, install
shaft is alined with roller bearing
impeller as follows:
before tapping shaft and ball bearing
(a) Remove burrs from shaft bore of
into position.
impeller and start impeller on shaft
(7) Install snap ring.
so that drilled hole in impeller is
(8) Install front oil seal by tapping seal into
turned 180 from old groove pin
position with a soft hammer.
location. Install impeller retaining
Note.
nut, tighten to a torque of 30 ft. lbs.
Lightly coat outer diameter of the
and install cotter pin.
seal with sealing compound before
installing.
57
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