Goulds Pumps 3501 Mixer - IOM - Manual (Page 40)

REASSEMBLY OF BEARING
FRAME
NOTE: An induction type bearing heater is required
to expand bearings to ease their installation on shaft.
Bearings should be heated to approximately 100°C
(212°F).
p
! CAUTION
Do not use a flame to heat bearings, this will damage
bearing surfaces.
NOTE: Refer to Table 9 for the torque values for all
fasteners.
1. After heating, install radial bearing (409) onto shaft
(122) ensuring spacing ring is placed between shaft
shoulder and inner race (Fig. 36).
NOTE: Care must be taken to keep inner race
together with roller assembly during installation.
2. Place thrust bearing retainer ring (253B) on shaft
(122) between bearing fits with small diameter facing
coupling end.
3. Determine orientation of angular contact thrust
bearings (112) for back-to-back mounting. This is
with the thick shoulders of outer races together.
4. After heating, slide angular contact duplex set (112)
onto shaft (122), maintaining the correct orientation
from Step 3. Push inner races firmly together against
the shaft shoulder until they cool and lock into place.
5. After bearings have cooled, place lockwasher (382)
on shaft (122) and install bearing locknut (136).
6. Tighten bearing locknut (136) firmly with a spanner
wrench, clamping bearing (112) against shaft (122)
shoulder.
7. Bend lockwasher (382) tang into a slot that lines up
on bearing locknut (136).
8. If bearing lubrication is grease, hand pack all three
bearings with grease.
9. Lubricate and install O-ring (496) on thrust bearing
housing (134A).
10. Slide thrust bearing housing (134A) over thrust
bearing (112) (Fig. 35).
11. Attach thrust bearing retainer ring (253B) to thrust
bearing housing (134A) with socket head cap screws
(236A). Tighten firmly in a cross bolt pattern to ensure
even contact with bearing races (Figs. 35 and 36).
NOTE: There will be a gap of approximately 3-4 mm
(.12-16 in.) between retainer and housing.
12. Prepare bearing frame (228) for either oil or grease
oil lubrication as follows:
·
Oil Lubrication - Ensure oil return is fully open
(No plug) (Fig. 37 and 38).
NOTE: If changing lubrication from grease to oil,
remove accumulated grease from oil return after plug
is removed.
·
Grease Lubrication - Ensure plug (370E) is in-
stalled in radial end oil return (Fig. 38).
36 3501 IOM 11/10
Fig. 35
Fig. 37
228
Fig. 36