Figure 36: Spacing ring placement
NOTICE:
Care must be taken to keep inner race together with roller assembly during installation.
2.
Place thrust bearing retainer ring (253B) on shaft 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 orien-
tation 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. 36).
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. 36 and 37).
NOTICE:
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:
6.13 Reassembly of bearing frame
46
3501 Installation, Operation, and Maintenance Instructions
