Page 64 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair

Insrailation, Mainenunce, and Repair of Horizonral PMmpS 49

Tgble 1-4
Pump shaft dlameters

TYPE OF SHAFT DIAMETER
PUMP At Coupling At Stuffing Box
1.2500 -
1.502
Packed
1.2495 1.498
1.502
Mechanical 1.2500 -
Seal 1.2495 1.498

Table 1-5
Permissible shaft run-out per ft. of diameter

TO SHAFT

3. Slide thrust bearing (81-2) on shaft (20) as far as possible by hand.
Oil bearing seat on shaft. Place pipe or sleeve over shaft, being
sure it rests against inner race only. Tap sleeve evenly until bearing
is seated firmly against shaft shoulder.
4. Assemble thrust bearing lock washer (31) and lock nut (21-4).
5. Slide radial bearing (8 1 - 1) on shaft (20) as far as possible by hand.
Oil bearing seat on shaft. Place pipe or sleeve over shaft, being
sure it rests against inner race only. 'Ihp sleeve evenly until bearing
is firmly seated against shaft shoulder.
6. Install shaft (20) and bearing subassembly into bearing housing.
Due to bearing and housing tolerances, it may be necessary to
lightly tap shaft until the thrust bearing is seated against bearing
housing.
7. Install bearing end cap O-ring or gaskets.
8. Assemble outboard bearing end cap (13-2).
9. Assemble inboard (29-1) and outboard (29-2) deflectors on shaft.
10. Install pump half coupling.

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Note: Basic pump data are summanzed in Appendix 1-C.