AMT 3899-98, Specifications Information And Repair Parts Manual, Page: 3 / 8

Specifications Information and Repair Parts Manual
3899-97 & 3899-99
3890-252-00 3 2/2015
1½ -Inch Self-Priming Centrifugal Pedestal Pumps
BEARING HOUSING SERVICE
1. Remove pump head assembly (See “Mechanical Seal
Replacement”)
2. Remove shaft bearings (Ref. No. 25) and shaft (Ref. No. 26) as
an assembly by first removing retaining ring (Ref. No. 29) and
wave washer (Ref. No. 28).
3. Push shaft/bearing assembly out of the bearing housing (Ref. No.
24) by rapping on pump end of shaft with soft mallet, or block of
wood and a hammer.
4. Shaft bearings can now be removed from shaft.
5. If shaft bearings have been removed from shaft and bearing
housing, replace by sliding bearing or shaft to shoulder.
6. Replace shaft bearing assembly by sliding assembly into housing,
pump end first. Push shaft bearing assembly completely in by
gently tapping on keyway end of shaft with soft mallet.
7. Replace wave washer and snap ring.
8.
Reassemble pump to pedestal (See “Mechanical Seal
Replacement”).