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Spare parts
Ordering spare parts
To ensure against possible long and costly downtime periods, especially on critical services. it
is advisable to have spare parts on hand. The most desirable parts to have on hand are the
following:
1. Ball Bearings. Replacement angular contact thrust bearings must have races properly
2. Oil Seals.
3. Bearing locknut.
4. Bearing lock washer (Y frame only).
5. Mechanical Seal.
6. Casing 0-ring.
7. Back washers.
8. O-rings for seal seat, seal mount, casing and diffusers.
Also desirable, but more dependent on plant practice, is either of the following:
1. Complete set of impellers, diffusers, and thrust washers for the pump, or:
2. Spare liquid end consisting of everything but the bearing frame.
Instructions for ordering spare parts
Repair orders will be handled with the minimum of problems if the following information is
accurately supplied:
Nameplate Data
1. Pump Serial Number
2. Pump Model Number
3. Pump Size.
4. Pump Construction
Order Data
1. Part name
2. Part number (item number) These names and numbers should agree with those on
Explanation of Pump Nameplate designation
Model 3935 Installation, Operation and Maintenance Instructions
ground for the appropriate mounting configuration. Angular contact bearings which are
universally ground may be mounted in tandem, back-to-back, or faceto-face configuration.
The mounting configuration (face-to-face for the S frame, and tandem for L. X, Y) should be
specified when replacement bearings are ordered from local sources to assure proper
grinding of outer races.
Sectional view
(page 18).
Spare parts
23
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